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Cosmetic changes.

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committer: mfx <mfx> 1037106750 +0000
This commit is contained in:
Markus F.X.J. Oberhumer 2002-11-12 13:12:30 +00:00
parent 12c6cd8021
commit ff03ac17b2
2 changed files with 41 additions and 27 deletions
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65
src/stub/l_lx_exec.c
View File

@ -23,6 +23,9 @@
Markus F.X.J. Oberhumer Laszlo Molnar
<mfx@users.sourceforge.net> <ml1050@users.sourceforge.net>
John F. Reiser
<jreiser@users.sourceforge.net>
*/
@ -73,35 +76,44 @@ static __inline__ int xwrite(int fd, const void *buf, int count)
// util
**************************************************************************/
#if 1
extern char *
__attribute__ ((regparm(2), stdcall)) // be ruthless
upx_itoa(unsigned long v, char *buf);
// Some versions of gcc optimize the division and/or remainder using
// a multiplication by (2**32)/10, and use a relocatable 32-bit address
// to reference the constant. We require no relocations because we move
// the code at runtime. See upx_itoa.asm for replacement [also smaller.]
//static char *upx_itoa(unsigned long v, char *buf)
//{
// volatile unsigned TEN = 10; // an ugly way to achieve no relocation
// char *p = buf;
// {
// unsigned long k = v;
// do {
// p++;
// k /= TEN;
// } while (k > 0);
// }
// buf = p;
// *p = 0;
// {
// unsigned long k = v;
// do {
// *--p = '0' + k % TEN;
// k /= TEN;
// } while (k > 0);
// }
// return buf;
//}
#else
// Some versions of gcc optimize the division and/or remainder using
// a multiplication by (2**32)/10, and use a relocatable 32-bit address
// to reference the constant. We require no relocations because we move
// the code at runtime. See upx_itoa.asm for replacement [also smaller.]
static char *upx_itoa(unsigned long v, char *buf)
{
// const unsigned TEN = 10;
volatile unsigned TEN = 10; // an ugly way to achieve no relocation
char *p = buf;
{
unsigned long k = v;
do {
p++;
k /= TEN;
} while (k > 0);
}
buf = p;
*p = 0;
{
unsigned long k = v;
do {
*--p = '0' + k % TEN;
k /= TEN;
} while (k > 0);
}
return buf;
}
#endif
static uint32_t ascii5(char *p, uint32_t v, unsigned n)
{
@ -114,6 +126,7 @@ static uint32_t ascii5(char *p, uint32_t v, unsigned n)
return v;
}
static char *
do_mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset)
{

3
src/stub/upx_itoa.asm
View File

@ -1,4 +1,4 @@
; l_lx_itoa.asm -- decimal print; smaller than gcc, and no relocations
; upx_itoa.asm -- decimal print; smaller than gcc, and no relocations
;
; This file is part of the UPX executable compressor.
;
@ -52,3 +52,4 @@ quo0:
add al, byte '0'
stosb
ret