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[util] Add optional debug messages to zbin.c

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This commit is contained in:
Michael Brown 2008-10-09 18:02:19 +01:00
parent e817a347fb
commit 96ea558e98
1 changed files with 27 additions and 0 deletions
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27
src/util/zbin.c
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@ -6,6 +6,8 @@
#include "nrv2b.c"
FILE *infile, *outfile;
#define DEBUG 0
struct input_file {
void *buf;
size_t len;
@ -151,6 +153,11 @@ static int process_zinfo_copy ( struct input_file *input,
return -1;
}
if ( DEBUG ) {
fprintf ( stderr, "COPY [%#zx,%#zx) to [%#zx,%#zx)\n", offset, ( offset + len ),
output->len, ( output->len + len ) );
}
memcpy ( ( output->buf + output->len ),
( input->buf + offset ), len );
output->len += len;
@ -184,6 +191,11 @@ static int process_zinfo_pack ( struct input_file *input,
return -1;
}
if ( DEBUG ) {
fprintf ( stderr, "PACK [%#zx,%#zx) to [%#zx,%#zx)\n", offset, ( offset + len ),
output->len, ( output->len + packed_len ) );
}
output->len += packed_len;
if ( output->len > output->max_len ) {
fprintf ( stderr, "Output buffer overrun on pack\n" );
@ -200,6 +212,8 @@ static int process_zinfo_subtract ( struct input_file *input,
size_t offset = subtract->offset;
void *target;
long delta;
unsigned long old;
unsigned long new;
if ( ( offset + datasize ) > output->len ) {
fprintf ( stderr, "Subtract at %#zx outside output buffer\n",
@ -214,21 +228,34 @@ static int process_zinfo_subtract ( struct input_file *input,
switch ( datasize ) {
case 1: {
uint8_t *byte = target;
old = *byte;
*byte += delta;
new = *byte;
break; }
case 2: {
uint16_t *word = target;
old = *word;
*word += delta;
new = *word;
break; }
case 4: {
uint32_t *dword = target;
old = *dword;
*dword += delta;
new = *dword;
break; }
default:
fprintf ( stderr, "Unsupported subtract datasize %d\n",
datasize );
return -1;
}
if ( DEBUG ) {
fprintf ( stderr, "SUBx [%#zx,%#zx) (%#lx+(%#lx/%#lx)-(%#lx/%#lx)) = %#lx\n",
offset, ( offset + datasize ), old, output->len, subtract->divisor,
input->len, subtract->divisor, new );
}
return 0;
}