diff options
Diffstat (limited to 'lib/libtcc1.c')
| -rw-r--r-- | lib/libtcc1.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/lib/libtcc1.c b/lib/libtcc1.c index 53dbec4..a94a82d 100644 --- a/lib/libtcc1.c +++ b/lib/libtcc1.c @@ -478,13 +478,24 @@ long long __ashldi3(long long a, int b) #endif } -#if defined(__i386__) -/* FPU control word for rounding to nearest mode */ -unsigned short __tcc_fpu_control = 0x137f; -/* FPU control word for round to zero mode for int conversion */ -unsigned short __tcc_int_fpu_control = 0x137f | 0x0c00; +#ifndef _WIN32 +void __tcc_fpinit(void) +{ + unsigned c = 0x137F; + __asm__ __volatile__ ("fldcw %0" : "=m" (c)); +} #endif - +long long __tcc_cvt_ftol(long double x) +{ + unsigned c0, c1; + long long ret; + __asm__ __volatile__ ("fnstcw %0" : "=m" (c0)); + c1 = c0 | 0x0C00; + __asm__ __volatile__ ("fldcw %0" : "=m" (c1)); + __asm__ __volatile__ ("fistpll %0" : "=m" (ret)); + __asm__ __volatile__ ("fldcw %0" : "=m" (c0)); + return ret; +} #endif /* !__x86_64__ */ /* XXX: fix tcc's code generator to do this instead */ |