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Rework the inline assembly implementations of write and getpid for x86 to

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work in PIE builds.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3574
This commit is contained in:
Tom Hughes 2005-04-27 08:58:53 +00:00
parent d2bf76f731
commit dd35e4a4cb
1 changed files with 14 additions and 9 deletions
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23
coregrind/m_debuglog.c
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@ -62,12 +62,15 @@
static UInt local_sys_write_stderr ( HChar* buf, Int n )
{
UInt __res;
__asm__ volatile ("int $0x80"
: "=a" (__res)
: "0" (4), /* __NR_write */
"b" (2), /* stderr */
"c" (buf),
"d" (n) );
__asm__ volatile (
"movl $4, %%eax\n" /* set %eax = __NR_write */
"movl $2, %%ebx\n" /* set %ebx = stderr */
"movl %1, %%ecx\n" /* set %ecx = buf */
"movl %2, %%edx\n" /* set %ecx = n */
"int $0x80\n" /* write(stderr, buf, n) */
"movl %%eax, %0\n" /* set __res = eax */
: "=mr" (__res)
: "g" (buf), "g" (n) );
if (__res < 0)
__res = -1;
return __res;
@ -76,9 +79,11 @@ static UInt local_sys_write_stderr ( HChar* buf, Int n )
static UInt local_sys_getpid ( void )
{
UInt __res;
__asm__ volatile ("int $0x80"
: "=a" (__res)
: "0" (20) /* __NR_getpid */);
__asm__ volatile (
"movl $20, %%eax\n" /* set %eax = __NR_getpid */
"int $0x80\n" /* getpid() */
"movl %%eax, %0\n" /* set __res = eax */
: "=mr" (__res) );
return __res;
}