2256 lines
73 KiB
C
2256 lines
73 KiB
C
/*
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* arch/s390/math-emu/math.c
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*
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* S390 version
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* Copyright (C) 1999-2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
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* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
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*
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* 'math.c' emulates IEEE instructions on a S390 processor
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* that does not have the IEEE fpu (all processors before G5).
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*/
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#include <linux/types.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <asm/uaccess.h>
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#include <asm/lowcore.h>
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#include <asm/sfp-util.h>
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#include <math-emu/soft-fp.h>
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#include <math-emu/single.h>
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#include <math-emu/double.h>
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#include <math-emu/quad.h>
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/*
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* I miss a macro to round a floating point number to the
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* nearest integer in the same floating point format.
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*/
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#define _FP_TO_FPINT_ROUND(fs, wc, X) \
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do { \
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switch (X##_c) \
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{ \
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case FP_CLS_NORMAL: \
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if (X##_e > _FP_FRACBITS_##fs + _FP_EXPBIAS_##fs) \
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{ /* floating point number has no bits after the dot. */ \
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} \
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else if (X##_e <= _FP_FRACBITS_##fs + _FP_EXPBIAS_##fs && \
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X##_e > _FP_EXPBIAS_##fs) \
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{ /* some bits before the dot, some after it. */ \
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_FP_FRAC_SRS_##wc(X, _FP_WFRACBITS_##fs, \
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X##_e - _FP_EXPBIAS_##fs \
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+ _FP_FRACBITS_##fs); \
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_FP_ROUND(wc, X); \
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_FP_FRAC_SLL_##wc(X, X##_e - _FP_EXPBIAS_##fs \
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+ _FP_FRACBITS_##fs); \
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} \
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else \
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{ /* all bits after the dot. */ \
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FP_SET_EXCEPTION(FP_EX_INEXACT); \
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X##_c = FP_CLS_ZERO; \
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} \
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break; \
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case FP_CLS_NAN: \
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case FP_CLS_INF: \
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case FP_CLS_ZERO: \
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break; \
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} \
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} while (0)
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#define FP_TO_FPINT_ROUND_S(X) _FP_TO_FPINT_ROUND(S,1,X)
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#define FP_TO_FPINT_ROUND_D(X) _FP_TO_FPINT_ROUND(D,2,X)
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#define FP_TO_FPINT_ROUND_Q(X) _FP_TO_FPINT_ROUND(Q,4,X)
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typedef union {
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long double ld;
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struct {
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__u64 high;
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__u64 low;
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} w;
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} mathemu_ldcv;
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#ifdef CONFIG_SYSCTL
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int sysctl_ieee_emulation_warnings=1;
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#endif
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#define mathemu_put_user(x, p) \
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do { \
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if (put_user((x),(p))) \
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return SIGSEGV; \
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} while (0)
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#define mathemu_get_user(x, p) \
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do { \
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if (get_user((x),(p))) \
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return SIGSEGV; \
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} while (0)
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#define mathemu_copy_from_user(d, s, n)\
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do { \
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if (copy_from_user((d),(s),(n)) != 0) \
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return SIGSEGV; \
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} while (0)
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#define mathemu_copy_to_user(d, s, n) \
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do { \
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if (copy_to_user((d),(s),(n)) != 0) \
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return SIGSEGV; \
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} while (0)
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static void display_emulation_not_implemented(struct pt_regs *regs, char *instr)
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{
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__u16 *location;
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#ifdef CONFIG_SYSCTL
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if(sysctl_ieee_emulation_warnings)
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#endif
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{
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location = (__u16 *)(regs->psw.addr-S390_lowcore.pgm_ilc);
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printk("%s ieee fpu instruction not emulated "
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"process name: %s pid: %d \n",
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instr, current->comm, current->pid);
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printk("%s's PSW: %08lx %08lx\n", instr,
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(unsigned long) regs->psw.mask,
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(unsigned long) location);
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}
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}
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static inline void emu_set_CC (struct pt_regs *regs, int cc)
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{
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regs->psw.mask = (regs->psw.mask & 0xFFFFCFFF) | ((cc&3) << 12);
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}
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/*
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* Set the condition code in the user psw.
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* 0 : Result is zero
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* 1 : Result is less than zero
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* 2 : Result is greater than zero
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* 3 : Result is NaN or INF
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*/
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static inline void emu_set_CC_cs(struct pt_regs *regs, int class, int sign)
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{
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switch (class) {
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case FP_CLS_NORMAL:
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case FP_CLS_INF:
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emu_set_CC(regs, sign ? 1 : 2);
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break;
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case FP_CLS_ZERO:
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emu_set_CC(regs, 0);
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break;
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case FP_CLS_NAN:
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emu_set_CC(regs, 3);
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break;
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}
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}
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/* Add long double */
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static int emu_axbr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
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FP_DECL_EX;
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mathemu_ldcv cvt;
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int mode;
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mode = current->thread.fp_regs.fpc & 3;
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cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
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cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
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FP_UNPACK_QP(QA, &cvt.ld);
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cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
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cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
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FP_UNPACK_QP(QB, &cvt.ld);
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FP_ADD_Q(QR, QA, QB);
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FP_PACK_QP(&cvt.ld, QR);
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current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
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current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
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emu_set_CC_cs(regs, QR_c, QR_s);
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return _fex;
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}
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/* Add double */
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static int emu_adbr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
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FP_DECL_EX;
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int mode;
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mode = current->thread.fp_regs.fpc & 3;
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FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
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FP_UNPACK_DP(DB, ¤t->thread.fp_regs.fprs[ry].d);
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FP_ADD_D(DR, DA, DB);
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FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
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emu_set_CC_cs(regs, DR_c, DR_s);
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return _fex;
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}
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/* Add double */
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static int emu_adb (struct pt_regs *regs, int rx, double *val) {
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FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
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FP_DECL_EX;
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int mode;
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mode = current->thread.fp_regs.fpc & 3;
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FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
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FP_UNPACK_DP(DB, val);
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FP_ADD_D(DR, DA, DB);
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FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
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emu_set_CC_cs(regs, DR_c, DR_s);
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return _fex;
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}
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/* Add float */
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static int emu_aebr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
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FP_DECL_EX;
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int mode;
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mode = current->thread.fp_regs.fpc & 3;
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FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
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FP_UNPACK_SP(SB, ¤t->thread.fp_regs.fprs[ry].f);
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FP_ADD_S(SR, SA, SB);
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FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
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emu_set_CC_cs(regs, SR_c, SR_s);
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return _fex;
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}
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/* Add float */
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static int emu_aeb (struct pt_regs *regs, int rx, float *val) {
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FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
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FP_DECL_EX;
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int mode;
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mode = current->thread.fp_regs.fpc & 3;
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FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
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FP_UNPACK_SP(SB, val);
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FP_ADD_S(SR, SA, SB);
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FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
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emu_set_CC_cs(regs, SR_c, SR_s);
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return _fex;
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}
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/* Compare long double */
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static int emu_cxbr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_Q(QA); FP_DECL_Q(QB);
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mathemu_ldcv cvt;
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int IR;
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cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
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cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
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FP_UNPACK_RAW_QP(QA, &cvt.ld);
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cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
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cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
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FP_UNPACK_RAW_QP(QB, &cvt.ld);
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FP_CMP_Q(IR, QA, QB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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return 0;
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}
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/* Compare double */
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static int emu_cdbr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_D(DA); FP_DECL_D(DB);
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int IR;
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FP_UNPACK_RAW_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
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FP_UNPACK_RAW_DP(DB, ¤t->thread.fp_regs.fprs[ry].d);
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FP_CMP_D(IR, DA, DB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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return 0;
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}
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/* Compare double */
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static int emu_cdb (struct pt_regs *regs, int rx, double *val) {
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FP_DECL_D(DA); FP_DECL_D(DB);
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int IR;
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FP_UNPACK_RAW_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
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FP_UNPACK_RAW_DP(DB, val);
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FP_CMP_D(IR, DA, DB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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return 0;
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}
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/* Compare float */
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static int emu_cebr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_S(SA); FP_DECL_S(SB);
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int IR;
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FP_UNPACK_RAW_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
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FP_UNPACK_RAW_SP(SB, ¤t->thread.fp_regs.fprs[ry].f);
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FP_CMP_S(IR, SA, SB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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return 0;
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}
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/* Compare float */
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static int emu_ceb (struct pt_regs *regs, int rx, float *val) {
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FP_DECL_S(SA); FP_DECL_S(SB);
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int IR;
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FP_UNPACK_RAW_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
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FP_UNPACK_RAW_SP(SB, val);
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FP_CMP_S(IR, SA, SB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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return 0;
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}
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/* Compare and signal long double */
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static int emu_kxbr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_Q(QA); FP_DECL_Q(QB);
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FP_DECL_EX;
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mathemu_ldcv cvt;
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int IR;
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cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
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cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
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FP_UNPACK_RAW_QP(QA, &cvt.ld);
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cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
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cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
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FP_UNPACK_QP(QB, &cvt.ld);
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FP_CMP_Q(IR, QA, QB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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if (IR == 3)
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FP_SET_EXCEPTION (FP_EX_INVALID);
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return _fex;
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}
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/* Compare and signal double */
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static int emu_kdbr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_D(DA); FP_DECL_D(DB);
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FP_DECL_EX;
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int IR;
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FP_UNPACK_RAW_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
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FP_UNPACK_RAW_DP(DB, ¤t->thread.fp_regs.fprs[ry].d);
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FP_CMP_D(IR, DA, DB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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if (IR == 3)
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FP_SET_EXCEPTION (FP_EX_INVALID);
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return _fex;
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}
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/* Compare and signal double */
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static int emu_kdb (struct pt_regs *regs, int rx, double *val) {
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FP_DECL_D(DA); FP_DECL_D(DB);
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FP_DECL_EX;
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int IR;
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FP_UNPACK_RAW_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
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FP_UNPACK_RAW_DP(DB, val);
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FP_CMP_D(IR, DA, DB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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if (IR == 3)
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FP_SET_EXCEPTION (FP_EX_INVALID);
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return _fex;
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}
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/* Compare and signal float */
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static int emu_kebr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_S(SA); FP_DECL_S(SB);
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FP_DECL_EX;
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int IR;
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FP_UNPACK_RAW_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
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FP_UNPACK_RAW_SP(SB, ¤t->thread.fp_regs.fprs[ry].f);
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FP_CMP_S(IR, SA, SB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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if (IR == 3)
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FP_SET_EXCEPTION (FP_EX_INVALID);
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return _fex;
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}
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/* Compare and signal float */
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static int emu_keb (struct pt_regs *regs, int rx, float *val) {
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FP_DECL_S(SA); FP_DECL_S(SB);
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FP_DECL_EX;
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int IR;
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FP_UNPACK_RAW_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
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FP_UNPACK_RAW_SP(SB, val);
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FP_CMP_S(IR, SA, SB, 3);
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/*
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* IR == -1 if DA < DB, IR == 0 if DA == DB,
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* IR == 1 if DA > DB and IR == 3 if unorderded
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*/
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emu_set_CC(regs, (IR == -1) ? 1 : (IR == 1) ? 2 : IR);
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if (IR == 3)
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FP_SET_EXCEPTION (FP_EX_INVALID);
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return _fex;
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}
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|
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/* Convert from fixed long double */
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static int emu_cxfbr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_Q(QR);
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FP_DECL_EX;
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mathemu_ldcv cvt;
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__s32 si;
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int mode;
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mode = current->thread.fp_regs.fpc & 3;
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si = regs->gprs[ry];
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FP_FROM_INT_Q(QR, si, 32, int);
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FP_PACK_QP(&cvt.ld, QR);
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current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
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current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
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return _fex;
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}
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|
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/* Convert from fixed double */
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static int emu_cdfbr (struct pt_regs *regs, int rx, int ry) {
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FP_DECL_D(DR);
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FP_DECL_EX;
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__s32 si;
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int mode;
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mode = current->thread.fp_regs.fpc & 3;
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si = regs->gprs[ry];
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FP_FROM_INT_D(DR, si, 32, int);
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FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
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return _fex;
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}
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|
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/* Convert from fixed float */
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|
static int emu_cefbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
__s32 si;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
si = regs->gprs[ry];
|
|
FP_FROM_INT_S(SR, si, 32, int);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Convert to fixed long double */
|
|
static int emu_cfxbr (struct pt_regs *regs, int rx, int ry, int mask) {
|
|
FP_DECL_Q(QA);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
__s32 si;
|
|
int mode;
|
|
|
|
if (mask == 0)
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
else if (mask == 1)
|
|
mode = FP_RND_NEAREST;
|
|
else
|
|
mode = mask - 4;
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
FP_TO_INT_ROUND_Q(si, QA, 32, 1);
|
|
regs->gprs[rx] = si;
|
|
emu_set_CC_cs(regs, QA_c, QA_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Convert to fixed double */
|
|
static int emu_cfdbr (struct pt_regs *regs, int rx, int ry, int mask) {
|
|
FP_DECL_D(DA);
|
|
FP_DECL_EX;
|
|
__s32 si;
|
|
int mode;
|
|
|
|
if (mask == 0)
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
else if (mask == 1)
|
|
mode = FP_RND_NEAREST;
|
|
else
|
|
mode = mask - 4;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_TO_INT_ROUND_D(si, DA, 32, 1);
|
|
regs->gprs[rx] = si;
|
|
emu_set_CC_cs(regs, DA_c, DA_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Convert to fixed float */
|
|
static int emu_cfebr (struct pt_regs *regs, int rx, int ry, int mask) {
|
|
FP_DECL_S(SA);
|
|
FP_DECL_EX;
|
|
__s32 si;
|
|
int mode;
|
|
|
|
if (mask == 0)
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
else if (mask == 1)
|
|
mode = FP_RND_NEAREST;
|
|
else
|
|
mode = mask - 4;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_TO_INT_ROUND_S(si, SA, 32, 1);
|
|
regs->gprs[rx] = si;
|
|
emu_set_CC_cs(regs, SA_c, SA_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Divide long double */
|
|
static int emu_dxbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QB, &cvt.ld);
|
|
FP_DIV_Q(QR, QA, QB);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
return _fex;
|
|
}
|
|
|
|
/* Divide double */
|
|
static int emu_ddbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_DIV_D(DR, DA, DB);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Divide double */
|
|
static int emu_ddb (struct pt_regs *regs, int rx, double *val) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, val);
|
|
FP_DIV_D(DR, DA, DB);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Divide float */
|
|
static int emu_debr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_DIV_S(SR, SA, SB);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Divide float */
|
|
static int emu_deb (struct pt_regs *regs, int rx, float *val) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, val);
|
|
FP_DIV_S(SR, SA, SB);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Divide to integer double */
|
|
static int emu_didbr (struct pt_regs *regs, int rx, int ry, int mask) {
|
|
display_emulation_not_implemented(regs, "didbr");
|
|
return 0;
|
|
}
|
|
|
|
/* Divide to integer float */
|
|
static int emu_diebr (struct pt_regs *regs, int rx, int ry, int mask) {
|
|
display_emulation_not_implemented(regs, "diebr");
|
|
return 0;
|
|
}
|
|
|
|
/* Extract fpc */
|
|
static int emu_efpc (struct pt_regs *regs, int rx, int ry) {
|
|
regs->gprs[rx] = current->thread.fp_regs.fpc;
|
|
return 0;
|
|
}
|
|
|
|
/* Load and test long double */
|
|
static int emu_ltxbr (struct pt_regs *regs, int rx, int ry) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
mathemu_ldcv cvt;
|
|
FP_DECL_Q(QA);
|
|
FP_DECL_EX;
|
|
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
fp_regs->fprs[rx].ui = fp_regs->fprs[ry].ui;
|
|
fp_regs->fprs[rx+2].ui = fp_regs->fprs[ry+2].ui;
|
|
emu_set_CC_cs(regs, QA_c, QA_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load and test double */
|
|
static int emu_ltdbr (struct pt_regs *regs, int rx, int ry) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
FP_DECL_D(DA);
|
|
FP_DECL_EX;
|
|
|
|
FP_UNPACK_DP(DA, &fp_regs->fprs[ry].d);
|
|
fp_regs->fprs[rx].ui = fp_regs->fprs[ry].ui;
|
|
emu_set_CC_cs(regs, DA_c, DA_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load and test double */
|
|
static int emu_ltebr (struct pt_regs *regs, int rx, int ry) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
FP_DECL_S(SA);
|
|
FP_DECL_EX;
|
|
|
|
FP_UNPACK_SP(SA, &fp_regs->fprs[ry].f);
|
|
fp_regs->fprs[rx].ui = fp_regs->fprs[ry].ui;
|
|
emu_set_CC_cs(regs, SA_c, SA_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load complement long double */
|
|
static int emu_lcxbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_Q(QA); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
FP_NEG_Q(QR, QA);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
emu_set_CC_cs(regs, QR_c, QR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load complement double */
|
|
static int emu_lcdbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_NEG_D(DR, DA);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
emu_set_CC_cs(regs, DR_c, DR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load complement float */
|
|
static int emu_lcebr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_NEG_S(SR, SA);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
emu_set_CC_cs(regs, SR_c, SR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load floating point integer long double */
|
|
static int emu_fixbr (struct pt_regs *regs, int rx, int ry, int mask) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
FP_DECL_Q(QA);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
__s32 si;
|
|
int mode;
|
|
|
|
if (mask == 0)
|
|
mode = fp_regs->fpc & 3;
|
|
else if (mask == 1)
|
|
mode = FP_RND_NEAREST;
|
|
else
|
|
mode = mask - 4;
|
|
cvt.w.high = fp_regs->fprs[ry].ui;
|
|
cvt.w.low = fp_regs->fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
FP_TO_FPINT_ROUND_Q(QA);
|
|
FP_PACK_QP(&cvt.ld, QA);
|
|
fp_regs->fprs[rx].ui = cvt.w.high;
|
|
fp_regs->fprs[rx+2].ui = cvt.w.low;
|
|
return _fex;
|
|
}
|
|
|
|
/* Load floating point integer double */
|
|
static int emu_fidbr (struct pt_regs *regs, int rx, int ry, int mask) {
|
|
/* FIXME: rounding mode !! */
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
FP_DECL_D(DA);
|
|
FP_DECL_EX;
|
|
__s32 si;
|
|
int mode;
|
|
|
|
if (mask == 0)
|
|
mode = fp_regs->fpc & 3;
|
|
else if (mask == 1)
|
|
mode = FP_RND_NEAREST;
|
|
else
|
|
mode = mask - 4;
|
|
FP_UNPACK_DP(DA, &fp_regs->fprs[ry].d);
|
|
FP_TO_FPINT_ROUND_D(DA);
|
|
FP_PACK_DP(&fp_regs->fprs[rx].d, DA);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load floating point integer float */
|
|
static int emu_fiebr (struct pt_regs *regs, int rx, int ry, int mask) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
FP_DECL_S(SA);
|
|
FP_DECL_EX;
|
|
__s32 si;
|
|
int mode;
|
|
|
|
if (mask == 0)
|
|
mode = fp_regs->fpc & 3;
|
|
else if (mask == 1)
|
|
mode = FP_RND_NEAREST;
|
|
else
|
|
mode = mask - 4;
|
|
FP_UNPACK_SP(SA, &fp_regs->fprs[ry].f);
|
|
FP_TO_FPINT_ROUND_S(SA);
|
|
FP_PACK_SP(&fp_regs->fprs[rx].f, SA);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load lengthened double to long double */
|
|
static int emu_lxdbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_CONV (Q, D, 4, 2, QR, DA);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
return _fex;
|
|
}
|
|
|
|
/* Load lengthened double to long double */
|
|
static int emu_lxdb (struct pt_regs *regs, int rx, double *val) {
|
|
FP_DECL_D(DA); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, val);
|
|
FP_CONV (Q, D, 4, 2, QR, DA);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
return _fex;
|
|
}
|
|
|
|
/* Load lengthened float to long double */
|
|
static int emu_lxebr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_CONV (Q, S, 4, 1, QR, SA);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
return _fex;
|
|
}
|
|
|
|
/* Load lengthened float to long double */
|
|
static int emu_lxeb (struct pt_regs *regs, int rx, float *val) {
|
|
FP_DECL_S(SA); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, val);
|
|
FP_CONV (Q, S, 4, 1, QR, SA);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
return _fex;
|
|
}
|
|
|
|
/* Load lengthened float to double */
|
|
static int emu_ldebr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_CONV (D, S, 2, 1, DR, SA);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load lengthened float to double */
|
|
static int emu_ldeb (struct pt_regs *regs, int rx, float *val) {
|
|
FP_DECL_S(SA); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, val);
|
|
FP_CONV (D, S, 2, 1, DR, SA);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load negative long double */
|
|
static int emu_lnxbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_Q(QA); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
if (QA_s == 0) {
|
|
FP_NEG_Q(QR, QA);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
} else {
|
|
current->thread.fp_regs.fprs[rx].ui =
|
|
current->thread.fp_regs.fprs[ry].ui;
|
|
current->thread.fp_regs.fprs[rx+2].ui =
|
|
current->thread.fp_regs.fprs[ry+2].ui;
|
|
}
|
|
emu_set_CC_cs(regs, QR_c, QR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load negative double */
|
|
static int emu_lndbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[ry].d);
|
|
if (DA_s == 0) {
|
|
FP_NEG_D(DR, DA);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
} else
|
|
current->thread.fp_regs.fprs[rx].ui =
|
|
current->thread.fp_regs.fprs[ry].ui;
|
|
emu_set_CC_cs(regs, DR_c, DR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load negative float */
|
|
static int emu_lnebr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[ry].f);
|
|
if (SA_s == 0) {
|
|
FP_NEG_S(SR, SA);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
} else
|
|
current->thread.fp_regs.fprs[rx].ui =
|
|
current->thread.fp_regs.fprs[ry].ui;
|
|
emu_set_CC_cs(regs, SR_c, SR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load positive long double */
|
|
static int emu_lpxbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_Q(QA); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
if (QA_s != 0) {
|
|
FP_NEG_Q(QR, QA);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
} else{
|
|
current->thread.fp_regs.fprs[rx].ui =
|
|
current->thread.fp_regs.fprs[ry].ui;
|
|
current->thread.fp_regs.fprs[rx+2].ui =
|
|
current->thread.fp_regs.fprs[ry+2].ui;
|
|
}
|
|
emu_set_CC_cs(regs, QR_c, QR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load positive double */
|
|
static int emu_lpdbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[ry].d);
|
|
if (DA_s != 0) {
|
|
FP_NEG_D(DR, DA);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
} else
|
|
current->thread.fp_regs.fprs[rx].ui =
|
|
current->thread.fp_regs.fprs[ry].ui;
|
|
emu_set_CC_cs(regs, DR_c, DR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load positive float */
|
|
static int emu_lpebr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[ry].f);
|
|
if (SA_s != 0) {
|
|
FP_NEG_S(SR, SA);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
} else
|
|
current->thread.fp_regs.fprs[rx].ui =
|
|
current->thread.fp_regs.fprs[ry].ui;
|
|
emu_set_CC_cs(regs, SR_c, SR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load rounded long double to double */
|
|
static int emu_ldxbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_Q(QA); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
FP_CONV (D, Q, 2, 4, DR, QA);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].f, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load rounded long double to float */
|
|
static int emu_lexbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_Q(QA); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
FP_CONV (S, Q, 1, 4, SR, QA);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Load rounded double to float */
|
|
static int emu_ledbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_CONV (S, D, 1, 2, SR, DA);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply long double */
|
|
static int emu_mxbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QB, &cvt.ld);
|
|
FP_MUL_Q(QR, QA, QB);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply double */
|
|
static int emu_mdbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_MUL_D(DR, DA, DB);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply double */
|
|
static int emu_mdb (struct pt_regs *regs, int rx, double *val) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, val);
|
|
FP_MUL_D(DR, DA, DB);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply double to long double */
|
|
static int emu_mxdbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_CONV (Q, D, 4, 2, QA, DA);
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_CONV (Q, D, 4, 2, QB, DA);
|
|
FP_MUL_Q(QR, QA, QB);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply double to long double */
|
|
static int emu_mxdb (struct pt_regs *regs, int rx, long double *val) {
|
|
FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
FP_UNPACK_QP(QB, val);
|
|
FP_MUL_Q(QR, QA, QB);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply float */
|
|
static int emu_meebr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_MUL_S(SR, SA, SB);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply float */
|
|
static int emu_meeb (struct pt_regs *regs, int rx, float *val) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, val);
|
|
FP_MUL_S(SR, SA, SB);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply float to double */
|
|
static int emu_mdebr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_CONV (D, S, 2, 1, DA, SA);
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_CONV (D, S, 2, 1, DB, SA);
|
|
FP_MUL_D(DR, DA, DB);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply float to double */
|
|
static int emu_mdeb (struct pt_regs *regs, int rx, float *val) {
|
|
FP_DECL_S(SA); FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_CONV (D, S, 2, 1, DA, SA);
|
|
FP_UNPACK_SP(SA, val);
|
|
FP_CONV (D, S, 2, 1, DB, SA);
|
|
FP_MUL_D(DR, DA, DB);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply and add double */
|
|
static int emu_madbr (struct pt_regs *regs, int rx, int ry, int rz) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DC); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_UNPACK_DP(DC, ¤t->thread.fp_regs.fprs[rz].d);
|
|
FP_MUL_D(DR, DA, DB);
|
|
FP_ADD_D(DR, DR, DC);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rz].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply and add double */
|
|
static int emu_madb (struct pt_regs *regs, int rx, double *val, int rz) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DC); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, val);
|
|
FP_UNPACK_DP(DC, ¤t->thread.fp_regs.fprs[rz].d);
|
|
FP_MUL_D(DR, DA, DB);
|
|
FP_ADD_D(DR, DR, DC);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rz].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply and add float */
|
|
static int emu_maebr (struct pt_regs *regs, int rx, int ry, int rz) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SC); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_UNPACK_SP(SC, ¤t->thread.fp_regs.fprs[rz].f);
|
|
FP_MUL_S(SR, SA, SB);
|
|
FP_ADD_S(SR, SR, SC);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rz].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply and add float */
|
|
static int emu_maeb (struct pt_regs *regs, int rx, float *val, int rz) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SC); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, val);
|
|
FP_UNPACK_SP(SC, ¤t->thread.fp_regs.fprs[rz].f);
|
|
FP_MUL_S(SR, SA, SB);
|
|
FP_ADD_S(SR, SR, SC);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rz].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply and subtract double */
|
|
static int emu_msdbr (struct pt_regs *regs, int rx, int ry, int rz) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DC); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_UNPACK_DP(DC, ¤t->thread.fp_regs.fprs[rz].d);
|
|
FP_MUL_D(DR, DA, DB);
|
|
FP_SUB_D(DR, DR, DC);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rz].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply and subtract double */
|
|
static int emu_msdb (struct pt_regs *regs, int rx, double *val, int rz) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DC); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, val);
|
|
FP_UNPACK_DP(DC, ¤t->thread.fp_regs.fprs[rz].d);
|
|
FP_MUL_D(DR, DA, DB);
|
|
FP_SUB_D(DR, DR, DC);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rz].d, DR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply and subtract float */
|
|
static int emu_msebr (struct pt_regs *regs, int rx, int ry, int rz) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SC); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_UNPACK_SP(SC, ¤t->thread.fp_regs.fprs[rz].f);
|
|
FP_MUL_S(SR, SA, SB);
|
|
FP_SUB_S(SR, SR, SC);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rz].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Multiply and subtract float */
|
|
static int emu_mseb (struct pt_regs *regs, int rx, float *val, int rz) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SC); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, val);
|
|
FP_UNPACK_SP(SC, ¤t->thread.fp_regs.fprs[rz].f);
|
|
FP_MUL_S(SR, SA, SB);
|
|
FP_SUB_S(SR, SR, SC);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rz].f, SR);
|
|
return _fex;
|
|
}
|
|
|
|
/* Set floating point control word */
|
|
static int emu_sfpc (struct pt_regs *regs, int rx, int ry) {
|
|
__u32 temp;
|
|
|
|
temp = regs->gprs[rx];
|
|
if ((temp & ~FPC_VALID_MASK) != 0)
|
|
return SIGILL;
|
|
current->thread.fp_regs.fpc = temp;
|
|
return 0;
|
|
}
|
|
|
|
/* Square root long double */
|
|
static int emu_sqxbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_Q(QA); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
FP_SQRT_Q(QR, QA);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
emu_set_CC_cs(regs, QR_c, QR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Square root double */
|
|
static int emu_sqdbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_SQRT_D(DR, DA);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
emu_set_CC_cs(regs, DR_c, DR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Square root double */
|
|
static int emu_sqdb (struct pt_regs *regs, int rx, double *val) {
|
|
FP_DECL_D(DA); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, val);
|
|
FP_SQRT_D(DR, DA);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
emu_set_CC_cs(regs, DR_c, DR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Square root float */
|
|
static int emu_sqebr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_SQRT_S(SR, SA);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
emu_set_CC_cs(regs, SR_c, SR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Square root float */
|
|
static int emu_sqeb (struct pt_regs *regs, int rx, float *val) {
|
|
FP_DECL_S(SA); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, val);
|
|
FP_SQRT_S(SR, SA);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
emu_set_CC_cs(regs, SR_c, SR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Subtract long double */
|
|
static int emu_sxbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
|
|
FP_DECL_EX;
|
|
mathemu_ldcv cvt;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
|
|
FP_UNPACK_QP(QA, &cvt.ld);
|
|
cvt.w.high = current->thread.fp_regs.fprs[ry].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[ry+2].ui;
|
|
FP_UNPACK_QP(QB, &cvt.ld);
|
|
FP_SUB_Q(QR, QA, QB);
|
|
FP_PACK_QP(&cvt.ld, QR);
|
|
current->thread.fp_regs.fprs[rx].ui = cvt.w.high;
|
|
current->thread.fp_regs.fprs[rx+2].ui = cvt.w.low;
|
|
emu_set_CC_cs(regs, QR_c, QR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Subtract double */
|
|
static int emu_sdbr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, ¤t->thread.fp_regs.fprs[ry].d);
|
|
FP_SUB_D(DR, DA, DB);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
emu_set_CC_cs(regs, DR_c, DR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Subtract double */
|
|
static int emu_sdb (struct pt_regs *regs, int rx, double *val) {
|
|
FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
FP_UNPACK_DP(DB, val);
|
|
FP_SUB_D(DR, DA, DB);
|
|
FP_PACK_DP(¤t->thread.fp_regs.fprs[rx].d, DR);
|
|
emu_set_CC_cs(regs, DR_c, DR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Subtract float */
|
|
static int emu_sebr (struct pt_regs *regs, int rx, int ry) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, ¤t->thread.fp_regs.fprs[ry].f);
|
|
FP_SUB_S(SR, SA, SB);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
emu_set_CC_cs(regs, SR_c, SR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Subtract float */
|
|
static int emu_seb (struct pt_regs *regs, int rx, float *val) {
|
|
FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
|
|
FP_DECL_EX;
|
|
int mode;
|
|
|
|
mode = current->thread.fp_regs.fpc & 3;
|
|
FP_UNPACK_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
FP_UNPACK_SP(SB, val);
|
|
FP_SUB_S(SR, SA, SB);
|
|
FP_PACK_SP(¤t->thread.fp_regs.fprs[rx].f, SR);
|
|
emu_set_CC_cs(regs, SR_c, SR_s);
|
|
return _fex;
|
|
}
|
|
|
|
/* Test data class long double */
|
|
static int emu_tcxb (struct pt_regs *regs, int rx, long val) {
|
|
FP_DECL_Q(QA);
|
|
mathemu_ldcv cvt;
|
|
int bit;
|
|
|
|
cvt.w.high = current->thread.fp_regs.fprs[rx].ui;
|
|
cvt.w.low = current->thread.fp_regs.fprs[rx+2].ui;
|
|
FP_UNPACK_RAW_QP(QA, &cvt.ld);
|
|
switch (QA_e) {
|
|
default:
|
|
bit = 8; /* normalized number */
|
|
break;
|
|
case 0:
|
|
if (_FP_FRAC_ZEROP_4(QA))
|
|
bit = 10; /* zero */
|
|
else
|
|
bit = 6; /* denormalized number */
|
|
break;
|
|
case _FP_EXPMAX_Q:
|
|
if (_FP_FRAC_ZEROP_4(QA))
|
|
bit = 4; /* infinity */
|
|
else if (_FP_FRAC_HIGH_RAW_Q(QA) & _FP_QNANBIT_Q)
|
|
bit = 2; /* quiet NAN */
|
|
else
|
|
bit = 0; /* signaling NAN */
|
|
break;
|
|
}
|
|
if (!QA_s)
|
|
bit++;
|
|
emu_set_CC(regs, ((__u32) val >> bit) & 1);
|
|
return 0;
|
|
}
|
|
|
|
/* Test data class double */
|
|
static int emu_tcdb (struct pt_regs *regs, int rx, long val) {
|
|
FP_DECL_D(DA);
|
|
int bit;
|
|
|
|
FP_UNPACK_RAW_DP(DA, ¤t->thread.fp_regs.fprs[rx].d);
|
|
switch (DA_e) {
|
|
default:
|
|
bit = 8; /* normalized number */
|
|
break;
|
|
case 0:
|
|
if (_FP_FRAC_ZEROP_2(DA))
|
|
bit = 10; /* zero */
|
|
else
|
|
bit = 6; /* denormalized number */
|
|
break;
|
|
case _FP_EXPMAX_D:
|
|
if (_FP_FRAC_ZEROP_2(DA))
|
|
bit = 4; /* infinity */
|
|
else if (_FP_FRAC_HIGH_RAW_D(DA) & _FP_QNANBIT_D)
|
|
bit = 2; /* quiet NAN */
|
|
else
|
|
bit = 0; /* signaling NAN */
|
|
break;
|
|
}
|
|
if (!DA_s)
|
|
bit++;
|
|
emu_set_CC(regs, ((__u32) val >> bit) & 1);
|
|
return 0;
|
|
}
|
|
|
|
/* Test data class float */
|
|
static int emu_tceb (struct pt_regs *regs, int rx, long val) {
|
|
FP_DECL_S(SA);
|
|
int bit;
|
|
|
|
FP_UNPACK_RAW_SP(SA, ¤t->thread.fp_regs.fprs[rx].f);
|
|
switch (SA_e) {
|
|
default:
|
|
bit = 8; /* normalized number */
|
|
break;
|
|
case 0:
|
|
if (_FP_FRAC_ZEROP_1(SA))
|
|
bit = 10; /* zero */
|
|
else
|
|
bit = 6; /* denormalized number */
|
|
break;
|
|
case _FP_EXPMAX_S:
|
|
if (_FP_FRAC_ZEROP_1(SA))
|
|
bit = 4; /* infinity */
|
|
else if (_FP_FRAC_HIGH_RAW_S(SA) & _FP_QNANBIT_S)
|
|
bit = 2; /* quiet NAN */
|
|
else
|
|
bit = 0; /* signaling NAN */
|
|
break;
|
|
}
|
|
if (!SA_s)
|
|
bit++;
|
|
emu_set_CC(regs, ((__u32) val >> bit) & 1);
|
|
return 0;
|
|
}
|
|
|
|
static inline void emu_load_regd(int reg) {
|
|
if ((reg&9) != 0) /* test if reg in {0,2,4,6} */
|
|
return;
|
|
asm volatile( /* load reg from fp_regs.fprs[reg] */
|
|
" bras 1,0f\n"
|
|
" ld 0,0(%1)\n"
|
|
"0: ex %0,0(1)"
|
|
: /* no output */
|
|
: "a" (reg<<4),"a" (¤t->thread.fp_regs.fprs[reg].d)
|
|
: "1");
|
|
}
|
|
|
|
static inline void emu_load_rege(int reg) {
|
|
if ((reg&9) != 0) /* test if reg in {0,2,4,6} */
|
|
return;
|
|
asm volatile( /* load reg from fp_regs.fprs[reg] */
|
|
" bras 1,0f\n"
|
|
" le 0,0(%1)\n"
|
|
"0: ex %0,0(1)"
|
|
: /* no output */
|
|
: "a" (reg<<4), "a" (¤t->thread.fp_regs.fprs[reg].f)
|
|
: "1");
|
|
}
|
|
|
|
static inline void emu_store_regd(int reg) {
|
|
if ((reg&9) != 0) /* test if reg in {0,2,4,6} */
|
|
return;
|
|
asm volatile( /* store reg to fp_regs.fprs[reg] */
|
|
" bras 1,0f\n"
|
|
" std 0,0(%1)\n"
|
|
"0: ex %0,0(1)"
|
|
: /* no output */
|
|
: "a" (reg<<4), "a" (¤t->thread.fp_regs.fprs[reg].d)
|
|
: "1");
|
|
}
|
|
|
|
|
|
static inline void emu_store_rege(int reg) {
|
|
if ((reg&9) != 0) /* test if reg in {0,2,4,6} */
|
|
return;
|
|
asm volatile( /* store reg to fp_regs.fprs[reg] */
|
|
" bras 1,0f\n"
|
|
" ste 0,0(%1)\n"
|
|
"0: ex %0,0(1)"
|
|
: /* no output */
|
|
: "a" (reg<<4), "a" (¤t->thread.fp_regs.fprs[reg].f)
|
|
: "1");
|
|
}
|
|
|
|
int math_emu_b3(__u8 *opcode, struct pt_regs * regs) {
|
|
int _fex = 0;
|
|
static const __u8 format_table[256] = {
|
|
[0x00] = 0x03,[0x01] = 0x03,[0x02] = 0x03,[0x03] = 0x03,
|
|
[0x04] = 0x0f,[0x05] = 0x0d,[0x06] = 0x0e,[0x07] = 0x0d,
|
|
[0x08] = 0x03,[0x09] = 0x03,[0x0a] = 0x03,[0x0b] = 0x03,
|
|
[0x0c] = 0x0f,[0x0d] = 0x03,[0x0e] = 0x06,[0x0f] = 0x06,
|
|
[0x10] = 0x02,[0x11] = 0x02,[0x12] = 0x02,[0x13] = 0x02,
|
|
[0x14] = 0x03,[0x15] = 0x02,[0x16] = 0x01,[0x17] = 0x03,
|
|
[0x18] = 0x02,[0x19] = 0x02,[0x1a] = 0x02,[0x1b] = 0x02,
|
|
[0x1c] = 0x02,[0x1d] = 0x02,[0x1e] = 0x05,[0x1f] = 0x05,
|
|
[0x40] = 0x01,[0x41] = 0x01,[0x42] = 0x01,[0x43] = 0x01,
|
|
[0x44] = 0x12,[0x45] = 0x0d,[0x46] = 0x11,[0x47] = 0x04,
|
|
[0x48] = 0x01,[0x49] = 0x01,[0x4a] = 0x01,[0x4b] = 0x01,
|
|
[0x4c] = 0x01,[0x4d] = 0x01,[0x53] = 0x06,[0x57] = 0x06,
|
|
[0x5b] = 0x05,[0x5f] = 0x05,[0x84] = 0x13,[0x8c] = 0x13,
|
|
[0x94] = 0x09,[0x95] = 0x08,[0x96] = 0x07,[0x98] = 0x0c,
|
|
[0x99] = 0x0b,[0x9a] = 0x0a
|
|
};
|
|
static const void *jump_table[256]= {
|
|
[0x00] = emu_lpebr,[0x01] = emu_lnebr,[0x02] = emu_ltebr,
|
|
[0x03] = emu_lcebr,[0x04] = emu_ldebr,[0x05] = emu_lxdbr,
|
|
[0x06] = emu_lxebr,[0x07] = emu_mxdbr,[0x08] = emu_kebr,
|
|
[0x09] = emu_cebr, [0x0a] = emu_aebr, [0x0b] = emu_sebr,
|
|
[0x0c] = emu_mdebr,[0x0d] = emu_debr, [0x0e] = emu_maebr,
|
|
[0x0f] = emu_msebr,[0x10] = emu_lpdbr,[0x11] = emu_lndbr,
|
|
[0x12] = emu_ltdbr,[0x13] = emu_lcdbr,[0x14] = emu_sqebr,
|
|
[0x15] = emu_sqdbr,[0x16] = emu_sqxbr,[0x17] = emu_meebr,
|
|
[0x18] = emu_kdbr, [0x19] = emu_cdbr, [0x1a] = emu_adbr,
|
|
[0x1b] = emu_sdbr, [0x1c] = emu_mdbr, [0x1d] = emu_ddbr,
|
|
[0x1e] = emu_madbr,[0x1f] = emu_msdbr,[0x40] = emu_lpxbr,
|
|
[0x41] = emu_lnxbr,[0x42] = emu_ltxbr,[0x43] = emu_lcxbr,
|
|
[0x44] = emu_ledbr,[0x45] = emu_ldxbr,[0x46] = emu_lexbr,
|
|
[0x47] = emu_fixbr,[0x48] = emu_kxbr, [0x49] = emu_cxbr,
|
|
[0x4a] = emu_axbr, [0x4b] = emu_sxbr, [0x4c] = emu_mxbr,
|
|
[0x4d] = emu_dxbr, [0x53] = emu_diebr,[0x57] = emu_fiebr,
|
|
[0x5b] = emu_didbr,[0x5f] = emu_fidbr,[0x84] = emu_sfpc,
|
|
[0x8c] = emu_efpc, [0x94] = emu_cefbr,[0x95] = emu_cdfbr,
|
|
[0x96] = emu_cxfbr,[0x98] = emu_cfebr,[0x99] = emu_cfdbr,
|
|
[0x9a] = emu_cfxbr
|
|
};
|
|
|
|
switch (format_table[opcode[1]]) {
|
|
case 1: /* RRE format, long double operation */
|
|
if (opcode[3] & 0x22)
|
|
return SIGILL;
|
|
emu_store_regd((opcode[3] >> 4) & 15);
|
|
emu_store_regd(((opcode[3] >> 4) & 15) + 2);
|
|
emu_store_regd(opcode[3] & 15);
|
|
emu_store_regd((opcode[3] & 15) + 2);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *,int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
emu_load_regd(((opcode[3] >> 4) & 15) + 2);
|
|
emu_load_regd(opcode[3] & 15);
|
|
emu_load_regd((opcode[3] & 15) + 2);
|
|
break;
|
|
case 2: /* RRE format, double operation */
|
|
emu_store_regd((opcode[3] >> 4) & 15);
|
|
emu_store_regd(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
emu_load_regd(opcode[3] & 15);
|
|
break;
|
|
case 3: /* RRE format, float operation */
|
|
emu_store_rege((opcode[3] >> 4) & 15);
|
|
emu_store_rege(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_rege((opcode[3] >> 4) & 15);
|
|
emu_load_rege(opcode[3] & 15);
|
|
break;
|
|
case 4: /* RRF format, long double operation */
|
|
if (opcode[3] & 0x22)
|
|
return SIGILL;
|
|
emu_store_regd((opcode[3] >> 4) & 15);
|
|
emu_store_regd(((opcode[3] >> 4) & 15) + 2);
|
|
emu_store_regd(opcode[3] & 15);
|
|
emu_store_regd((opcode[3] & 15) + 2);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
emu_load_regd(((opcode[3] >> 4) & 15) + 2);
|
|
emu_load_regd(opcode[3] & 15);
|
|
emu_load_regd((opcode[3] & 15) + 2);
|
|
break;
|
|
case 5: /* RRF format, double operation */
|
|
emu_store_regd((opcode[2] >> 4) & 15);
|
|
emu_store_regd((opcode[3] >> 4) & 15);
|
|
emu_store_regd(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
|
|
emu_load_regd((opcode[2] >> 4) & 15);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
emu_load_regd(opcode[3] & 15);
|
|
break;
|
|
case 6: /* RRF format, float operation */
|
|
emu_store_rege((opcode[2] >> 4) & 15);
|
|
emu_store_rege((opcode[3] >> 4) & 15);
|
|
emu_store_rege(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
|
|
emu_load_rege((opcode[2] >> 4) & 15);
|
|
emu_load_rege((opcode[3] >> 4) & 15);
|
|
emu_load_rege(opcode[3] & 15);
|
|
break;
|
|
case 7: /* RRE format, cxfbr instruction */
|
|
/* call the emulation function */
|
|
if (opcode[3] & 0x20)
|
|
return SIGILL;
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
emu_load_regd(((opcode[3] >> 4) & 15) + 2);
|
|
break;
|
|
case 8: /* RRE format, cdfbr instruction */
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
break;
|
|
case 9: /* RRE format, cefbr instruction */
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_rege((opcode[3] >> 4) & 15);
|
|
break;
|
|
case 10: /* RRF format, cfxbr instruction */
|
|
if ((opcode[2] & 128) == 128 || (opcode[2] & 96) == 32)
|
|
/* mask of { 2,3,8-15 } is invalid */
|
|
return SIGILL;
|
|
if (opcode[3] & 2)
|
|
return SIGILL;
|
|
emu_store_regd(opcode[3] & 15);
|
|
emu_store_regd((opcode[3] & 15) + 2);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
|
|
break;
|
|
case 11: /* RRF format, cfdbr instruction */
|
|
if ((opcode[2] & 128) == 128 || (opcode[2] & 96) == 32)
|
|
/* mask of { 2,3,8-15 } is invalid */
|
|
return SIGILL;
|
|
emu_store_regd(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
|
|
break;
|
|
case 12: /* RRF format, cfebr instruction */
|
|
if ((opcode[2] & 128) == 128 || (opcode[2] & 96) == 32)
|
|
/* mask of { 2,3,8-15 } is invalid */
|
|
return SIGILL;
|
|
emu_store_rege(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15, opcode[2] >> 4);
|
|
break;
|
|
case 13: /* RRE format, ldxbr & mdxbr instruction */
|
|
/* double store but long double load */
|
|
if (opcode[3] & 0x20)
|
|
return SIGILL;
|
|
emu_store_regd((opcode[3] >> 4) & 15);
|
|
emu_store_regd(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
emu_load_regd(((opcode[3] >> 4) & 15) + 2);
|
|
break;
|
|
case 14: /* RRE format, ldxbr & mdxbr instruction */
|
|
/* float store but long double load */
|
|
if (opcode[3] & 0x20)
|
|
return SIGILL;
|
|
emu_store_rege((opcode[3] >> 4) & 15);
|
|
emu_store_rege(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
emu_load_regd(((opcode[3] >> 4) & 15) + 2);
|
|
break;
|
|
case 15: /* RRE format, ldebr & mdebr instruction */
|
|
/* float store but double load */
|
|
emu_store_rege((opcode[3] >> 4) & 15);
|
|
emu_store_rege(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
break;
|
|
case 16: /* RRE format, ldxbr instruction */
|
|
/* long double store but double load */
|
|
if (opcode[3] & 2)
|
|
return SIGILL;
|
|
emu_store_regd(opcode[3] & 15);
|
|
emu_store_regd((opcode[3] & 15) + 2);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_regd((opcode[3] >> 4) & 15);
|
|
break;
|
|
case 17: /* RRE format, ldxbr instruction */
|
|
/* long double store but float load */
|
|
if (opcode[3] & 2)
|
|
return SIGILL;
|
|
emu_store_regd(opcode[3] & 15);
|
|
emu_store_regd((opcode[3] & 15) + 2);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_rege((opcode[3] >> 4) & 15);
|
|
break;
|
|
case 18: /* RRE format, ledbr instruction */
|
|
/* double store but float load */
|
|
emu_store_regd(opcode[3] & 15);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
emu_load_rege((opcode[3] >> 4) & 15);
|
|
break;
|
|
case 19: /* RRE format, efpc & sfpc instruction */
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, int))
|
|
jump_table[opcode[1]])
|
|
(regs, opcode[3] >> 4, opcode[3] & 15);
|
|
break;
|
|
default: /* invalid operation */
|
|
return SIGILL;
|
|
}
|
|
if (_fex != 0) {
|
|
current->thread.fp_regs.fpc |= _fex;
|
|
if (current->thread.fp_regs.fpc & (_fex << 8))
|
|
return SIGFPE;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void* calc_addr(struct pt_regs *regs, int rx, int rb, int disp)
|
|
{
|
|
addr_t addr;
|
|
|
|
rx &= 15;
|
|
rb &= 15;
|
|
addr = disp & 0xfff;
|
|
addr += (rx != 0) ? regs->gprs[rx] : 0; /* + index */
|
|
addr += (rb != 0) ? regs->gprs[rb] : 0; /* + base */
|
|
return (void*) addr;
|
|
}
|
|
|
|
int math_emu_ed(__u8 *opcode, struct pt_regs * regs) {
|
|
int _fex = 0;
|
|
|
|
static const __u8 format_table[256] = {
|
|
[0x04] = 0x06,[0x05] = 0x05,[0x06] = 0x07,[0x07] = 0x05,
|
|
[0x08] = 0x02,[0x09] = 0x02,[0x0a] = 0x02,[0x0b] = 0x02,
|
|
[0x0c] = 0x06,[0x0d] = 0x02,[0x0e] = 0x04,[0x0f] = 0x04,
|
|
[0x10] = 0x08,[0x11] = 0x09,[0x12] = 0x0a,[0x14] = 0x02,
|
|
[0x15] = 0x01,[0x17] = 0x02,[0x18] = 0x01,[0x19] = 0x01,
|
|
[0x1a] = 0x01,[0x1b] = 0x01,[0x1c] = 0x01,[0x1d] = 0x01,
|
|
[0x1e] = 0x03,[0x1f] = 0x03,
|
|
};
|
|
static const void *jump_table[]= {
|
|
[0x04] = emu_ldeb,[0x05] = emu_lxdb,[0x06] = emu_lxeb,
|
|
[0x07] = emu_mxdb,[0x08] = emu_keb, [0x09] = emu_ceb,
|
|
[0x0a] = emu_aeb, [0x0b] = emu_seb, [0x0c] = emu_mdeb,
|
|
[0x0d] = emu_deb, [0x0e] = emu_maeb,[0x0f] = emu_mseb,
|
|
[0x10] = emu_tceb,[0x11] = emu_tcdb,[0x12] = emu_tcxb,
|
|
[0x14] = emu_sqeb,[0x15] = emu_sqdb,[0x17] = emu_meeb,
|
|
[0x18] = emu_kdb, [0x19] = emu_cdb, [0x1a] = emu_adb,
|
|
[0x1b] = emu_sdb, [0x1c] = emu_mdb, [0x1d] = emu_ddb,
|
|
[0x1e] = emu_madb,[0x1f] = emu_msdb
|
|
};
|
|
|
|
switch (format_table[opcode[5]]) {
|
|
case 1: /* RXE format, double constant */ {
|
|
__u64 *dxb, temp;
|
|
__u32 opc;
|
|
|
|
emu_store_regd((opcode[1] >> 4) & 15);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mathemu_copy_from_user(&temp, dxb, 8);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, double *))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, (double *) &temp);
|
|
emu_load_regd((opcode[1] >> 4) & 15);
|
|
break;
|
|
}
|
|
case 2: /* RXE format, float constant */ {
|
|
__u32 *dxb, temp;
|
|
__u32 opc;
|
|
|
|
emu_store_rege((opcode[1] >> 4) & 15);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mathemu_get_user(temp, dxb);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, float *))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, (float *) &temp);
|
|
emu_load_rege((opcode[1] >> 4) & 15);
|
|
break;
|
|
}
|
|
case 3: /* RXF format, double constant */ {
|
|
__u64 *dxb, temp;
|
|
__u32 opc;
|
|
|
|
emu_store_regd((opcode[1] >> 4) & 15);
|
|
emu_store_regd((opcode[4] >> 4) & 15);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mathemu_copy_from_user(&temp, dxb, 8);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, double *, int))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, (double *) &temp, opcode[4] >> 4);
|
|
emu_load_regd((opcode[1] >> 4) & 15);
|
|
break;
|
|
}
|
|
case 4: /* RXF format, float constant */ {
|
|
__u32 *dxb, temp;
|
|
__u32 opc;
|
|
|
|
emu_store_rege((opcode[1] >> 4) & 15);
|
|
emu_store_rege((opcode[4] >> 4) & 15);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mathemu_get_user(temp, dxb);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, float *, int))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, (float *) &temp, opcode[4] >> 4);
|
|
emu_load_rege((opcode[4] >> 4) & 15);
|
|
break;
|
|
}
|
|
case 5: /* RXE format, double constant */
|
|
/* store double and load long double */
|
|
{
|
|
__u64 *dxb, temp;
|
|
__u32 opc;
|
|
if ((opcode[1] >> 4) & 0x20)
|
|
return SIGILL;
|
|
emu_store_regd((opcode[1] >> 4) & 15);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mathemu_copy_from_user(&temp, dxb, 8);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, double *))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, (double *) &temp);
|
|
emu_load_regd((opcode[1] >> 4) & 15);
|
|
emu_load_regd(((opcode[1] >> 4) & 15) + 2);
|
|
break;
|
|
}
|
|
case 6: /* RXE format, float constant */
|
|
/* store float and load double */
|
|
{
|
|
__u32 *dxb, temp;
|
|
__u32 opc;
|
|
emu_store_rege((opcode[1] >> 4) & 15);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mathemu_get_user(temp, dxb);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, float *))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, (float *) &temp);
|
|
emu_load_regd((opcode[1] >> 4) & 15);
|
|
break;
|
|
}
|
|
case 7: /* RXE format, float constant */
|
|
/* store float and load long double */
|
|
{
|
|
__u32 *dxb, temp;
|
|
__u32 opc;
|
|
if ((opcode[1] >> 4) & 0x20)
|
|
return SIGILL;
|
|
emu_store_rege((opcode[1] >> 4) & 15);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mathemu_get_user(temp, dxb);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, float *))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, (float *) &temp);
|
|
emu_load_regd((opcode[1] >> 4) & 15);
|
|
emu_load_regd(((opcode[1] >> 4) & 15) + 2);
|
|
break;
|
|
}
|
|
case 8: /* RXE format, RX address used as int value */ {
|
|
__u64 dxb;
|
|
__u32 opc;
|
|
|
|
emu_store_rege((opcode[1] >> 4) & 15);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u64) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, long))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, dxb);
|
|
break;
|
|
}
|
|
case 9: /* RXE format, RX address used as int value */ {
|
|
__u64 dxb;
|
|
__u32 opc;
|
|
|
|
emu_store_regd((opcode[1] >> 4) & 15);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u64) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, long))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, dxb);
|
|
break;
|
|
}
|
|
case 10: /* RXE format, RX address used as int value */ {
|
|
__u64 dxb;
|
|
__u32 opc;
|
|
|
|
if ((opcode[1] >> 4) & 2)
|
|
return SIGILL;
|
|
emu_store_regd((opcode[1] >> 4) & 15);
|
|
emu_store_regd(((opcode[1] >> 4) & 15) + 2);
|
|
opc = *((__u32 *) opcode);
|
|
dxb = (__u64) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
/* call the emulation function */
|
|
_fex = ((int (*)(struct pt_regs *, int, long))
|
|
jump_table[opcode[5]])
|
|
(regs, opcode[1] >> 4, dxb);
|
|
break;
|
|
}
|
|
default: /* invalid operation */
|
|
return SIGILL;
|
|
}
|
|
if (_fex != 0) {
|
|
current->thread.fp_regs.fpc |= _fex;
|
|
if (current->thread.fp_regs.fpc & (_fex << 8))
|
|
return SIGFPE;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Emulate LDR Rx,Ry with Rx or Ry not in {0, 2, 4, 6}
|
|
*/
|
|
int math_emu_ldr(__u8 *opcode) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
__u16 opc = *((__u16 *) opcode);
|
|
|
|
if ((opc & 0x90) == 0) { /* test if rx in {0,2,4,6} */
|
|
/* we got an exception therfore ry can't be in {0,2,4,6} */
|
|
asm volatile( /* load rx from fp_regs.fprs[ry] */
|
|
" bras 1,0f\n"
|
|
" ld 0,0(%1)\n"
|
|
"0: ex %0,0(1)"
|
|
: /* no output */
|
|
: "a" (opc & 0xf0), "a" (&fp_regs->fprs[opc & 0xf].d)
|
|
: "1");
|
|
} else if ((opc & 0x9) == 0) { /* test if ry in {0,2,4,6} */
|
|
asm volatile ( /* store ry to fp_regs.fprs[rx] */
|
|
" bras 1,0f\n"
|
|
" std 0,0(%1)\n"
|
|
"0: ex %0,0(1)"
|
|
: /* no output */
|
|
: "a" ((opc & 0xf) << 4),
|
|
"a" (&fp_regs->fprs[(opc & 0xf0)>>4].d)
|
|
: "1");
|
|
} else /* move fp_regs.fprs[ry] to fp_regs.fprs[rx] */
|
|
fp_regs->fprs[(opc & 0xf0) >> 4] = fp_regs->fprs[opc & 0xf];
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Emulate LER Rx,Ry with Rx or Ry not in {0, 2, 4, 6}
|
|
*/
|
|
int math_emu_ler(__u8 *opcode) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
__u16 opc = *((__u16 *) opcode);
|
|
|
|
if ((opc & 0x90) == 0) { /* test if rx in {0,2,4,6} */
|
|
/* we got an exception therfore ry can't be in {0,2,4,6} */
|
|
asm volatile( /* load rx from fp_regs.fprs[ry] */
|
|
" bras 1,0f\n"
|
|
" le 0,0(%1)\n"
|
|
"0: ex %0,0(1)"
|
|
: /* no output */
|
|
: "a" (opc & 0xf0), "a" (&fp_regs->fprs[opc & 0xf].f)
|
|
: "1");
|
|
} else if ((opc & 0x9) == 0) { /* test if ry in {0,2,4,6} */
|
|
asm volatile( /* store ry to fp_regs.fprs[rx] */
|
|
" bras 1,0f\n"
|
|
" ste 0,0(%1)\n"
|
|
"0: ex %0,0(1)"
|
|
: /* no output */
|
|
: "a" ((opc & 0xf) << 4),
|
|
"a" (&fp_regs->fprs[(opc & 0xf0) >> 4].f)
|
|
: "1");
|
|
} else /* move fp_regs.fprs[ry] to fp_regs.fprs[rx] */
|
|
fp_regs->fprs[(opc & 0xf0) >> 4] = fp_regs->fprs[opc & 0xf];
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Emulate LD R,D(X,B) with R not in {0, 2, 4, 6}
|
|
*/
|
|
int math_emu_ld(__u8 *opcode, struct pt_regs * regs) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
__u32 opc = *((__u32 *) opcode);
|
|
__u64 *dxb;
|
|
|
|
dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mathemu_copy_from_user(&fp_regs->fprs[(opc >> 20) & 0xf].d, dxb, 8);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Emulate LE R,D(X,B) with R not in {0, 2, 4, 6}
|
|
*/
|
|
int math_emu_le(__u8 *opcode, struct pt_regs * regs) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
__u32 opc = *((__u32 *) opcode);
|
|
__u32 *mem, *dxb;
|
|
|
|
dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mem = (__u32 *) (&fp_regs->fprs[(opc >> 20) & 0xf].f);
|
|
mathemu_get_user(mem[0], dxb);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Emulate STD R,D(X,B) with R not in {0, 2, 4, 6}
|
|
*/
|
|
int math_emu_std(__u8 *opcode, struct pt_regs * regs) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
__u32 opc = *((__u32 *) opcode);
|
|
__u64 *dxb;
|
|
|
|
dxb = (__u64 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mathemu_copy_to_user(dxb, &fp_regs->fprs[(opc >> 20) & 0xf].d, 8);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Emulate STE R,D(X,B) with R not in {0, 2, 4, 6}
|
|
*/
|
|
int math_emu_ste(__u8 *opcode, struct pt_regs * regs) {
|
|
s390_fp_regs *fp_regs = ¤t->thread.fp_regs;
|
|
__u32 opc = *((__u32 *) opcode);
|
|
__u32 *mem, *dxb;
|
|
|
|
dxb = (__u32 *) calc_addr(regs, opc >> 16, opc >> 12, opc);
|
|
mem = (__u32 *) (&fp_regs->fprs[(opc >> 20) & 0xf].f);
|
|
mathemu_put_user(mem[0], dxb);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Emulate LFPC D(B)
|
|
*/
|
|
int math_emu_lfpc(__u8 *opcode, struct pt_regs *regs) {
|
|
__u32 opc = *((__u32 *) opcode);
|
|
__u32 *dxb, temp;
|
|
|
|
dxb= (__u32 *) calc_addr(regs, 0, opc>>12, opc);
|
|
mathemu_get_user(temp, dxb);
|
|
if ((temp & ~FPC_VALID_MASK) != 0)
|
|
return SIGILL;
|
|
current->thread.fp_regs.fpc = temp;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Emulate STFPC D(B)
|
|
*/
|
|
int math_emu_stfpc(__u8 *opcode, struct pt_regs *regs) {
|
|
__u32 opc = *((__u32 *) opcode);
|
|
__u32 *dxb;
|
|
|
|
dxb= (__u32 *) calc_addr(regs, 0, opc>>12, opc);
|
|
mathemu_put_user(current->thread.fp_regs.fpc, dxb);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Emulate SRNM D(B)
|
|
*/
|
|
int math_emu_srnm(__u8 *opcode, struct pt_regs *regs) {
|
|
__u32 opc = *((__u32 *) opcode);
|
|
__u32 temp;
|
|
|
|
temp = calc_addr(regs, 0, opc>>12, opc);
|
|
current->thread.fp_regs.fpc &= ~3;
|
|
current->thread.fp_regs.fpc |= (temp & 3);
|
|
return 0;
|
|
}
|
|
|
|
/* broken compiler ... */
|
|
long long
|
|
__negdi2 (long long u)
|
|
{
|
|
|
|
union lll {
|
|
long long ll;
|
|
long s[2];
|
|
};
|
|
|
|
union lll w,uu;
|
|
|
|
uu.ll = u;
|
|
|
|
w.s[1] = -uu.s[1];
|
|
w.s[0] = -uu.s[0] - ((int) w.s[1] != 0);
|
|
|
|
return w.ll;
|
|
}
|