Martin Storsjö : msvcrt: Implement fesetenv for arm64.
Alexandre Julliard
julliard at winehq.org
Wed Aug 4 16:41:37 CDT 2021
Module: wine
Branch: master
Commit: 6391a9f8978b42b71b37c27b673a0a13c21ea577
URL: https://source.winehq.org/git/wine.git/?a=commit;h=6391a9f8978b42b71b37c27b673a0a13c21ea577
Author: Martin Storsjö <martin at martin.st>
Date: Wed Aug 4 18:04:32 2021 +0200
msvcrt: Implement fesetenv for arm64.
Signed-off-by: Martin Storsjö <martin at martin.st>
Signed-off-by: Piotr Caban <piotr at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/msvcrt/math.c | 38 ++++++++++++++++++++++++++++++++++----
1 file changed, 34 insertions(+), 4 deletions(-)
diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index 2ba810a9903..64ca7197101 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -5626,7 +5626,7 @@ int CDECL _controlfp_s(unsigned int *cur, unsigned int newval, unsigned int mask
return 0;
}
-#if _MSVCR_VER >= 140
+#if _MSVCR_VER >= 140 && (defined(__i386__) || defined(__x86_64__))
enum fenv_masks
{
FENV_X_INVALID = 0x00100010,
@@ -5689,7 +5689,6 @@ static __msvcrt_ulong fenv_encode(unsigned int x, unsigned int y)
}
/* decodes x87/sse control/status word, returns FALSE on error */
-#if (defined(__i386__) || defined(__x86_64__))
static BOOL fenv_decode(__msvcrt_ulong enc, unsigned int *x, unsigned int *y)
{
*x = *y = 0;
@@ -5723,16 +5722,21 @@ static BOOL fenv_decode(__msvcrt_ulong enc, unsigned int *x, unsigned int *y)
}
return TRUE;
}
-#endif
#elif _MSVCR_VER >= 120
static __msvcrt_ulong fenv_encode(unsigned int x, unsigned int y)
{
+ if (y & _EM_DENORMAL)
+ y = (y & ~_EM_DENORMAL) | 0x20;
+
return x | y;
}
-#if (defined(__i386__) || defined(__x86_64__))
+#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__)
static BOOL fenv_decode(__msvcrt_ulong enc, unsigned int *x, unsigned int *y)
{
+ if (enc & 0x20)
+ enc = (enc & ~0x20) | _EM_DENORMAL;
+
*x = *y = enc;
return TRUE;
}
@@ -6038,6 +6042,32 @@ int CDECL fesetenv(const fenv_t *env)
__asm__ __volatile__( "ldmxcsr %0" : : "m" (fpword) );
}
+ return 0;
+#elif defined(__aarch64__)
+ ULONG_PTR fpsr;
+ unsigned int tmp, fp_cw, fp_stat;
+
+ if (!env->_Fe_ctl && !env->_Fe_stat) {
+ _fpreset();
+ return 0;
+ }
+
+ if (!fenv_decode(env->_Fe_ctl, &tmp, &fp_cw))
+ return 1;
+ if (!fenv_decode(env->_Fe_stat, &tmp, &fp_stat))
+ return 1;
+
+ _control87(_MCW_EM, _MCW_EM);
+ __asm__ __volatile__( "mrs %0, fpsr" : "=r" (fpsr) );
+ fpsr &= ~0x9f;
+ if (fp_stat & _SW_INVALID) fpsr |= 0x1;
+ if (fp_stat & _SW_ZERODIVIDE) fpsr |= 0x2;
+ if (fp_stat & _SW_OVERFLOW) fpsr |= 0x4;
+ if (fp_stat & _SW_UNDERFLOW) fpsr |= 0x8;
+ if (fp_stat & _SW_INEXACT) fpsr |= 0x10;
+ if (fp_stat & _SW_DENORMAL) fpsr |= 0x80;
+ __asm__ __volatile__( "msr fpsr, %0" :: "r" (fpsr) );
+ _control87(fp_cw, 0xffffffff);
return 0;
#else
FIXME( "not implemented\n" );
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