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Add __bss16() macro, and allow use of .bss16 section by removing

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link-time check for section overlaps.  (In order to avoid wasting
space in the executable image, .bss16 will overlap with the following
section, which is .text).
This commit is contained in:
Michael Brown 2007-07-16 13:10:49 +01:00
parent c482fc90fb
commit 833d6cc8ec
2 changed files with 9 additions and 1 deletions
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2
src/arch/i386/Config
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@ -130,7 +130,7 @@ endif
# this is almost always a win. the kernel uses it, too.
CFLAGS+= -mpreferred-stack-boundary=2
LDFLAGS+= -N
LDFLAGS+= -N --no-check-sections
ifeq "$(shell uname -s)" "FreeBSD"
CFLAGS+= -DIMAGE_FREEBSD -DELF_IMAGE -DAOUT_IMAGE

8
src/arch/i386/include/librm.h
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@ -27,6 +27,14 @@ extern char *text16;
__attribute__ (( section ( ".data16" ) )) \
_data16_ ## variable array __asm__ ( #variable )
#define __bss16( variable ) \
__attribute__ (( section ( ".bss16" ) )) \
_data16_ ## variable __asm__ ( #variable )
#define __bss16_array( variable, array ) \
__attribute__ (( section ( ".bss16" ) )) \
_data16_ ## variable array __asm__ ( #variable )
#define __text16( variable ) \
__attribute__ (( section ( ".text16.data" ) )) \
_text16_ ## variable __asm__ ( #variable )