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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@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban
Alexandre Julliard
parent
a7ba456587
commit
ee33d38c50
1 changed files with 108 additions and 155 deletions
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@ -593,164 +593,117 @@ double CDECL MSVCRT_tanh( double x )
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#if defined(__GNUC__) && defined(__i386__)
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#define FPU_DOUBLE(var) double var; \
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__asm__ __volatile__( "fstpl %0;fwait" : "=m" (var) : )
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#define FPU_DOUBLES(var1,var2) double var1,var2; \
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__asm__ __volatile__( "fstpl %0;fwait" : "=m" (var2) : ); \
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__asm__ __volatile__( "fstpl %0;fwait" : "=m" (var1) : )
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#define CREATE_FPU_FUNC1(name, call) \
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__ASM_GLOBAL_FUNC(name, \
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"pushl %ebp\n\t" \
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__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") \
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__ASM_CFI(".cfi_rel_offset %ebp,0\n\t") \
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"movl %esp, %ebp\n\t" \
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__ASM_CFI(".cfi_def_cfa_register %ebp\n\t") \
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"subl $68, %esp\n\t" /* sizeof(double)*8 + sizeof(int) */ \
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"fstpl (%esp)\n\t" /* store function argument */ \
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"fwait\n\t" \
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"movl $1, %ecx\n\t" /* empty FPU stack */ \
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"1:\n\t" \
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"fxam\n\t" \
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"fstsw %ax\n\t" \
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"and $0x4500, %ax\n\t" \
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"cmp $0x4100, %ax\n\t" \
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"je 2f\n\t" \
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"fstpl (%esp,%ecx,8)\n\t" \
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"fwait\n\t" \
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"incl %ecx\n\t" \
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"jmp 1b\n\t" \
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"2:\n\t" \
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"movl %ecx, -4(%ebp)\n\t" \
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"call " __ASM_NAME( #call ) "\n\t" \
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"movl -4(%ebp), %ecx\n\t" \
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"fstpl (%esp)\n\t" /* save result */ \
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"3:\n\t" /* restore FPU stack */ \
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"decl %ecx\n\t" \
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"fldl (%esp,%ecx,8)\n\t" \
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"cmpl $0, %ecx\n\t" \
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"jne 3b\n\t" \
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"leave\n\t" \
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__ASM_CFI(".cfi_def_cfa %esp,4\n\t") \
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__ASM_CFI(".cfi_same_value %ebp\n\t") \
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"ret")
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/*********************************************************************
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* _CIacos (MSVCRT.@)
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*/
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double CDECL _CIacos(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_acos(x);
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}
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#define CREATE_FPU_FUNC2(name, call) \
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__ASM_GLOBAL_FUNC(name, \
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"pushl %ebp\n\t" \
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__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") \
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__ASM_CFI(".cfi_rel_offset %ebp,0\n\t") \
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"movl %esp, %ebp\n\t" \
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__ASM_CFI(".cfi_def_cfa_register %ebp\n\t") \
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"subl $68, %esp\n\t" /* sizeof(double)*8 + sizeof(int) */ \
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"fstpl 8(%esp)\n\t" /* store function argument */ \
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"fwait\n\t" \
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"fstpl (%esp)\n\t" \
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"fwait\n\t" \
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"movl $2, %ecx\n\t" /* empty FPU stack */ \
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"1:\n\t" \
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"fxam\n\t" \
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"fstsw %ax\n\t" \
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"and $0x4500, %ax\n\t" \
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"cmp $0x4100, %ax\n\t" \
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"je 2f\n\t" \
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"fstpl (%esp,%ecx,8)\n\t" \
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"fwait\n\t" \
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"incl %ecx\n\t" \
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"jmp 1b\n\t" \
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"2:\n\t" \
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"movl %ecx, -4(%ebp)\n\t" \
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"call " __ASM_NAME( #call ) "\n\t" \
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"movl -4(%ebp), %ecx\n\t" \
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"fstpl 8(%esp)\n\t" /* save result */ \
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"3:\n\t" /* restore FPU stack */ \
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"decl %ecx\n\t" \
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"fldl (%esp,%ecx,8)\n\t" \
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"cmpl $1, %ecx\n\t" \
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"jne 3b\n\t" \
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"leave\n\t" \
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__ASM_CFI(".cfi_def_cfa %esp,4\n\t") \
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__ASM_CFI(".cfi_same_value %ebp\n\t") \
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"ret")
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/*********************************************************************
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* _CIasin (MSVCRT.@)
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*/
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double CDECL _CIasin(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_asin(x);
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}
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CREATE_FPU_FUNC1(_CIacos, MSVCRT_acos)
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CREATE_FPU_FUNC1(_CIasin, MSVCRT_asin)
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CREATE_FPU_FUNC1(_CIatan, MSVCRT_atan)
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CREATE_FPU_FUNC2(_CIatan2, MSVCRT_atan2)
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CREATE_FPU_FUNC1(_CIcos, MSVCRT_cos)
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CREATE_FPU_FUNC1(_CIcosh, MSVCRT_cosh)
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CREATE_FPU_FUNC1(_CIexp, MSVCRT_exp)
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CREATE_FPU_FUNC2(_CIfmod, MSVCRT_fmod)
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CREATE_FPU_FUNC1(_CIlog, MSVCRT_log)
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CREATE_FPU_FUNC1(_CIlog10, MSVCRT_log10)
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CREATE_FPU_FUNC2(_CIpow, MSVCRT_pow)
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CREATE_FPU_FUNC1(_CIsin, MSVCRT_sin)
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CREATE_FPU_FUNC1(_CIsinh, MSVCRT_sinh)
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CREATE_FPU_FUNC1(_CIsqrt, MSVCRT_sqrt)
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CREATE_FPU_FUNC1(_CItan, MSVCRT_tan)
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CREATE_FPU_FUNC1(_CItanh, MSVCRT_tanh)
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/*********************************************************************
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* _CIatan (MSVCRT.@)
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*/
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double CDECL _CIatan(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_atan(x);
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}
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/*********************************************************************
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* _CIatan2 (MSVCRT.@)
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*/
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double CDECL _CIatan2(void)
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{
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FPU_DOUBLES(x,y);
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return MSVCRT_atan2(x,y);
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}
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/*********************************************************************
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* _CIcos (MSVCRT.@)
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*/
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double CDECL _CIcos(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_cos(x);
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}
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/*********************************************************************
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* _CIcosh (MSVCRT.@)
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*/
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double CDECL _CIcosh(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_cosh(x);
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}
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/*********************************************************************
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* _CIexp (MSVCRT.@)
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*/
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double CDECL _CIexp(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_exp(x);
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}
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/*********************************************************************
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* _CIfmod (MSVCRT.@)
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*/
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double CDECL _CIfmod(void)
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{
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FPU_DOUBLES(x,y);
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return MSVCRT_fmod(x,y);
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}
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/*********************************************************************
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* _CIlog (MSVCRT.@)
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*/
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double CDECL _CIlog(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_log(x);
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}
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/*********************************************************************
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* _CIlog10 (MSVCRT.@)
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*/
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double CDECL _CIlog10(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_log10(x);
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}
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/*********************************************************************
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* _CIpow (MSVCRT.@)
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*/
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double CDECL _CIpow(void)
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{
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FPU_DOUBLES(x,y);
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return MSVCRT_pow(x,y);
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}
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/*********************************************************************
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* _CIsin (MSVCRT.@)
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*/
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double CDECL _CIsin(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_sin(x);
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}
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/*********************************************************************
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* _CIsinh (MSVCRT.@)
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*/
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double CDECL _CIsinh(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_sinh(x);
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}
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/*********************************************************************
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* _CIsqrt (MSVCRT.@)
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*/
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double CDECL _CIsqrt(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_sqrt(x);
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}
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/*********************************************************************
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* _CItan (MSVCRT.@)
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*/
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double CDECL _CItan(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_tan(x);
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}
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/*********************************************************************
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* _CItanh (MSVCRT.@)
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*/
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double CDECL _CItanh(void)
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{
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FPU_DOUBLE(x);
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return MSVCRT_tanh(x);
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}
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/*********************************************************************
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* _ftol (MSVCRT.@)
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*/
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LONGLONG CDECL MSVCRT__ftol(void)
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{
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FPU_DOUBLE(x);
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return (LONGLONG)x;
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}
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__ASM_GLOBAL_FUNC(MSVCRT__ftol,
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"pushl %ebp\n\t"
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__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
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__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
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"movl %esp, %ebp\n\t"
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__ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
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"subl $12, %esp\n\t" /* sizeof(LONGLONG) + 2*sizeof(WORD) */
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"fnstcw (%esp)\n\t"
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"mov (%esp), %ax\n\t"
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"or $0xc, %ax\n\t"
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"mov %ax, 2(%esp)\n\t"
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"fldcw 2(%esp)\n\t"
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"fistpq 4(%esp)\n\t"
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"fldcw (%esp)\n\t"
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"movl 4(%esp), %eax\n\t"
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"movl 8(%esp), %edx\n\t"
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"leave\n\t"
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__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
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__ASM_CFI(".cfi_same_value %ebp\n\t")
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"ret")
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#endif /* defined(__GNUC__) && defined(__i386__) */
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