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ntdll: Don't use inline assembly in do_cpuid. 

Avoids problems on old GCC.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51862
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2021-12-17 15:57:32 +01:00 committed by Alexandre Julliard
parent 594036d620
commit d0413d833f
1 changed files with 30 additions and 4 deletions
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34
dlls/ntdll/unix/system.c
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@ -249,10 +249,36 @@ BOOL xstate_compaction_enabled = FALSE;
#define INEI 0x49656e69 /* "ineI" */
#define NTEL 0x6c65746e /* "ntel" */
static inline void do_cpuid(unsigned int ax, unsigned int cx, unsigned int *p)
{
__asm__ ("cpuid" : "=a"(p[0]), "=b" (p[1]), "=c"(p[2]), "=d"(p[3]) : "a"(ax), "c"(cx));
}
extern void do_cpuid( unsigned int ax, unsigned int cx, unsigned int *p ) DECLSPEC_HIDDEN;
#ifdef __i386__
__ASM_GLOBAL_FUNC( do_cpuid,
"pushl %esi\n\t"
"pushl %ebx\n\t"
"movl 12(%esp),%eax\n\t"
"movl 16(%esp),%ecx\n\t"
"movl 20(%esp),%esi\n\t"
"cpuid\n\t"
"movl %eax,(%esi)\n\t"
"movl %ebx,4(%esi)\n\t"
"movl %ecx,8(%esi)\n\t"
"movl %edx,12(%esi)\n\t"
"popl %ebx\n\t"
"popl %esi\n\t"
"ret" )
#else
__ASM_GLOBAL_FUNC( do_cpuid,
"pushq %rbx\n\t"
"movl %edi,%eax\n\t"
"movl %esi,%ecx\n\t"
"movq %rdx,%r8\n\t"
"cpuid\n\t"
"movl %eax,(%r8)\n\t"
"movl %ebx,4(%r8)\n\t"
"movl %ecx,8(%r8)\n\t"
"movl %edx,12(%r8)\n\t"
"popq %rbx\n\t"
"ret" )
#endif
#ifdef __i386__
extern int have_cpuid(void) DECLSPEC_HIDDEN;