Piotr Caban : msvcrt: Call cdecl functions with empty FPU stack in _CI* functions.
Module: wine Branch: master Commit: ee33d38c5041a8293c64257801572d1c742b0aba URL: http://source.winehq.org/git/wine.git/?a=commit;h=ee33d38c5041a8293c64257801... Author: Piotr Caban <piotr(a)codeweavers.com> Date: Mon Nov 27 20:29:44 2017 +0100 msvcrt: Call cdecl functions with empty FPU stack in _CI* functions. The FPU stack should be empty on cdecl function call. Failing to do so breaks GCC 6.4.0 -O2 optimized code. Signed-off-by: Piotr Caban <piotr(a)codeweavers.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/msvcrt/math.c | 269 ++++++++++++++++++++++------------------------------- 1 file changed, 111 insertions(+), 158 deletions(-) diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c index b7288cf..0627bfa 100644 --- a/dlls/msvcrt/math.c +++ b/dlls/msvcrt/math.c @@ -593,164 +593,117 @@ double CDECL MSVCRT_tanh( double x ) #if defined(__GNUC__) && defined(__i386__) -#define FPU_DOUBLE(var) double var; \ - __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var) : ) -#define FPU_DOUBLES(var1,var2) double var1,var2; \ - __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var2) : ); \ - __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var1) : ) - -/********************************************************************* - * _CIacos (MSVCRT.@) - */ -double CDECL _CIacos(void) -{ - FPU_DOUBLE(x); - return MSVCRT_acos(x); -} - -/********************************************************************* - * _CIasin (MSVCRT.@) - */ -double CDECL _CIasin(void) -{ - FPU_DOUBLE(x); - return MSVCRT_asin(x); -} - -/********************************************************************* - * _CIatan (MSVCRT.@) - */ -double CDECL _CIatan(void) -{ - FPU_DOUBLE(x); - return MSVCRT_atan(x); -} - -/********************************************************************* - * _CIatan2 (MSVCRT.@) - */ -double CDECL _CIatan2(void) -{ - FPU_DOUBLES(x,y); - return MSVCRT_atan2(x,y); -} - -/********************************************************************* - * _CIcos (MSVCRT.@) - */ -double CDECL _CIcos(void) -{ - FPU_DOUBLE(x); - return MSVCRT_cos(x); -} - -/********************************************************************* - * _CIcosh (MSVCRT.@) - */ -double CDECL _CIcosh(void) -{ - FPU_DOUBLE(x); - return MSVCRT_cosh(x); -} - -/********************************************************************* - * _CIexp (MSVCRT.@) - */ -double CDECL _CIexp(void) -{ - FPU_DOUBLE(x); - return MSVCRT_exp(x); -} - -/********************************************************************* - * _CIfmod (MSVCRT.@) - */ -double CDECL _CIfmod(void) -{ - FPU_DOUBLES(x,y); - return MSVCRT_fmod(x,y); -} - -/********************************************************************* - * _CIlog (MSVCRT.@) - */ -double CDECL _CIlog(void) -{ - FPU_DOUBLE(x); - return MSVCRT_log(x); -} - -/********************************************************************* - * _CIlog10 (MSVCRT.@) - */ -double CDECL _CIlog10(void) -{ - FPU_DOUBLE(x); - return MSVCRT_log10(x); -} - -/********************************************************************* - * _CIpow (MSVCRT.@) - */ -double CDECL _CIpow(void) -{ - FPU_DOUBLES(x,y); - return MSVCRT_pow(x,y); -} - -/********************************************************************* - * _CIsin (MSVCRT.@) - */ -double CDECL _CIsin(void) -{ - FPU_DOUBLE(x); - return MSVCRT_sin(x); -} - -/********************************************************************* - * _CIsinh (MSVCRT.@) - */ -double CDECL _CIsinh(void) -{ - FPU_DOUBLE(x); - return MSVCRT_sinh(x); -} - -/********************************************************************* - * _CIsqrt (MSVCRT.@) - */ -double CDECL _CIsqrt(void) -{ - FPU_DOUBLE(x); - return MSVCRT_sqrt(x); -} - -/********************************************************************* - * _CItan (MSVCRT.@) - */ -double CDECL _CItan(void) -{ - FPU_DOUBLE(x); - return MSVCRT_tan(x); -} - -/********************************************************************* - * _CItanh (MSVCRT.@) - */ -double CDECL _CItanh(void) -{ - FPU_DOUBLE(x); - return MSVCRT_tanh(x); -} - -/********************************************************************* - * _ftol (MSVCRT.@) - */ -LONGLONG CDECL MSVCRT__ftol(void) -{ - FPU_DOUBLE(x); - return (LONGLONG)x; -} +#define CREATE_FPU_FUNC1(name, call) \ + __ASM_GLOBAL_FUNC(name, \ + "pushl %ebp\n\t" \ + __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") \ + __ASM_CFI(".cfi_rel_offset %ebp,0\n\t") \ + "movl %esp, %ebp\n\t" \ + __ASM_CFI(".cfi_def_cfa_register %ebp\n\t") \ + "subl $68, %esp\n\t" /* sizeof(double)*8 + sizeof(int) */ \ + "fstpl (%esp)\n\t" /* store function argument */ \ + "fwait\n\t" \ + "movl $1, %ecx\n\t" /* empty FPU stack */ \ + "1:\n\t" \ + "fxam\n\t" \ + "fstsw %ax\n\t" \ + "and $0x4500, %ax\n\t" \ + "cmp $0x4100, %ax\n\t" \ + "je 2f\n\t" \ + "fstpl (%esp,%ecx,8)\n\t" \ + "fwait\n\t" \ + "incl %ecx\n\t" \ + "jmp 1b\n\t" \ + "2:\n\t" \ + "movl %ecx, -4(%ebp)\n\t" \ + "call " __ASM_NAME( #call ) "\n\t" \ + "movl -4(%ebp), %ecx\n\t" \ + "fstpl (%esp)\n\t" /* save result */ \ + "3:\n\t" /* restore FPU stack */ \ + "decl %ecx\n\t" \ + "fldl (%esp,%ecx,8)\n\t" \ + "cmpl $0, %ecx\n\t" \ + "jne 3b\n\t" \ + "leave\n\t" \ + __ASM_CFI(".cfi_def_cfa %esp,4\n\t") \ + __ASM_CFI(".cfi_same_value %ebp\n\t") \ + "ret") + +#define CREATE_FPU_FUNC2(name, call) \ + __ASM_GLOBAL_FUNC(name, \ + "pushl %ebp\n\t" \ + __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") \ + __ASM_CFI(".cfi_rel_offset %ebp,0\n\t") \ + "movl %esp, %ebp\n\t" \ + __ASM_CFI(".cfi_def_cfa_register %ebp\n\t") \ + "subl $68, %esp\n\t" /* sizeof(double)*8 + sizeof(int) */ \ + "fstpl 8(%esp)\n\t" /* store function argument */ \ + "fwait\n\t" \ + "fstpl (%esp)\n\t" \ + "fwait\n\t" \ + "movl $2, %ecx\n\t" /* empty FPU stack */ \ + "1:\n\t" \ + "fxam\n\t" \ + "fstsw %ax\n\t" \ + "and $0x4500, %ax\n\t" \ + "cmp $0x4100, %ax\n\t" \ + "je 2f\n\t" \ + "fstpl (%esp,%ecx,8)\n\t" \ + "fwait\n\t" \ + "incl %ecx\n\t" \ + "jmp 1b\n\t" \ + "2:\n\t" \ + "movl %ecx, -4(%ebp)\n\t" \ + "call " __ASM_NAME( #call ) "\n\t" \ + "movl -4(%ebp), %ecx\n\t" \ + "fstpl 8(%esp)\n\t" /* save result */ \ + "3:\n\t" /* restore FPU stack */ \ + "decl %ecx\n\t" \ + "fldl (%esp,%ecx,8)\n\t" \ + "cmpl $1, %ecx\n\t" \ + "jne 3b\n\t" \ + "leave\n\t" \ + __ASM_CFI(".cfi_def_cfa %esp,4\n\t") \ + __ASM_CFI(".cfi_same_value %ebp\n\t") \ + "ret") + +CREATE_FPU_FUNC1(_CIacos, MSVCRT_acos) +CREATE_FPU_FUNC1(_CIasin, MSVCRT_asin) +CREATE_FPU_FUNC1(_CIatan, MSVCRT_atan) +CREATE_FPU_FUNC2(_CIatan2, MSVCRT_atan2) +CREATE_FPU_FUNC1(_CIcos, MSVCRT_cos) +CREATE_FPU_FUNC1(_CIcosh, MSVCRT_cosh) +CREATE_FPU_FUNC1(_CIexp, MSVCRT_exp) +CREATE_FPU_FUNC2(_CIfmod, MSVCRT_fmod) +CREATE_FPU_FUNC1(_CIlog, MSVCRT_log) +CREATE_FPU_FUNC1(_CIlog10, MSVCRT_log10) +CREATE_FPU_FUNC2(_CIpow, MSVCRT_pow) +CREATE_FPU_FUNC1(_CIsin, MSVCRT_sin) +CREATE_FPU_FUNC1(_CIsinh, MSVCRT_sinh) +CREATE_FPU_FUNC1(_CIsqrt, MSVCRT_sqrt) +CREATE_FPU_FUNC1(_CItan, MSVCRT_tan) +CREATE_FPU_FUNC1(_CItanh, MSVCRT_tanh) + +__ASM_GLOBAL_FUNC(MSVCRT__ftol, + "pushl %ebp\n\t" + __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") + __ASM_CFI(".cfi_rel_offset %ebp,0\n\t") + "movl %esp, %ebp\n\t" + __ASM_CFI(".cfi_def_cfa_register %ebp\n\t") + "subl $12, %esp\n\t" /* sizeof(LONGLONG) + 2*sizeof(WORD) */ + "fnstcw (%esp)\n\t" + "mov (%esp), %ax\n\t" + "or $0xc, %ax\n\t" + "mov %ax, 2(%esp)\n\t" + "fldcw 2(%esp)\n\t" + "fistpq 4(%esp)\n\t" + "fldcw (%esp)\n\t" + "movl 4(%esp), %eax\n\t" + "movl 8(%esp), %edx\n\t" + "leave\n\t" + __ASM_CFI(".cfi_def_cfa %esp,4\n\t") + __ASM_CFI(".cfi_same_value %ebp\n\t") + "ret") #endif /* defined(__GNUC__) && defined(__i386__) */
participants (1)
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Alexandre Julliard