https://git.reactos.org/?p=reactos.git;a=commitdiff;h=15c9f63b659fbd3d688e4f22e925fe89d656304f
commit 15c9f63b659fbd3d688e4f22e925fe89d656304f Author: Jérôme Gardou <[email protected]> AuthorDate: Fri Nov 6 21:39:00 2020 +0100 Commit: Jérôme Gardou <[email protected]> CommitDate: Mon Nov 16 16:58:10 2020 +0100 [MSVCRTEX] Add some floating point functions for CLang build Clang makes optimisations requiring functions not present in msvcrt --- sdk/lib/crt/math/i386/exp2_asm.s | 38 ++++++++++++++++++++++++++++++++++++++ sdk/lib/crt/msvcrtex.cmake | 9 +++++++++ 2 files changed, 47 insertions(+) diff --git a/sdk/lib/crt/math/i386/exp2_asm.s b/sdk/lib/crt/math/i386/exp2_asm.s new file mode 100644 index 00000000000..d2ab14d63b1 --- /dev/null +++ b/sdk/lib/crt/math/i386/exp2_asm.s @@ -0,0 +1,38 @@ +#include <asm.inc> + +PUBLIC _exp2 + +/* FUNCTIONS ***************************************************************/ +.code + +_exp2: + push ebp + mov ebp, esp + + fld qword ptr [ebp + 8] + fxam + fstsw ax + fwait + sahf + jnp .not_inf + jnc .not_inf + test ah, 2 + jz .done + fstp st + fldz + jmp .done +.not_inf: + fst st(1) + frndint + fxch st(1) + fsub st, st(1) + f2xm1 + fld1 + faddp st(1), st + fscale + fstp st(1) +.done: + pop ebp + ret + +END diff --git a/sdk/lib/crt/msvcrtex.cmake b/sdk/lib/crt/msvcrtex.cmake index 593622e277d..0b6bff8520d 100644 --- a/sdk/lib/crt/msvcrtex.cmake +++ b/sdk/lib/crt/msvcrtex.cmake @@ -58,6 +58,15 @@ if(ARCH STREQUAL "i386") math/i386/cipow.c math/i386/cisin.c math/i386/cisqrt.c) + if (GCC AND CLANG) + # CLang performs some optimisations requiring those funtions + list(APPEND MSVCRTEX_ASM_SOURCE + math/i386/ceilf.S + math/i386/exp2_asm.s + math/i386/floorf.S) + list(APPEND MSVCRTEX_SOURCE + math/i386/sqrtf.c) + endif() elseif(ARCH STREQUAL "amd64") list(APPEND MSVCRTEX_ASM_SOURCE except/amd64/chkstk_ms.s)
