mii/qemu
1
0
Fork 0
mirror of https://github.com/mii443/qemu.git synced 2025-12-16 17:18:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add strict checking mode for softfp code.

Browse Source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3688 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook
2007-11-18 14:33:24 +00:00
parent b881c2c6e7
commit f090c9d4ad
8 changed files with 210 additions and 117 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
fpu/softfloat.h
View File

@@ -111,8 +111,31 @@ enum {
/*----------------------------------------------------------------------------
| Software IEC/IEEE floating-point types.
*----------------------------------------------------------------------------*/
/* Use structures for soft-float types. This prevents accidentally mixing
them with native int/float types. A sufficiently clever compiler and
sane ABI should be able to see though these structs. However
x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */
//#define USE_SOFTFLOAT_STRUCT_TYPES
#ifdef USE_SOFTFLOAT_STRUCT_TYPES
typedef struct {
uint32_t v;
} float32;
/* The cast ensures an error if the wrong type is passed. */
#define float32_val(x) (((float32)(x)).v)
#define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; })
typedef struct {
uint64_t v;
} float64;
#define float64_val(x) (((float64)(x)).v)
#define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; })
#else
typedef uint32_t float32;
typedef uint64_t float64;
#define float32_val(x) (x)
#define float64_val(x) (x)
#define make_float32(x) (x)
#define make_float64(x) (x)
#endif
#ifdef FLOATX80
typedef struct {
uint64_t low;
@@ -248,14 +271,16 @@ float32 float32_scalbn( float32, int STATUS_PARAM );
INLINE float32 float32_abs(float32 a)
{
return a & 0x7fffffff;
return make_float32(float32_val(a) & 0x7fffffff);
}
INLINE float32 float32_chs(float32 a)
{
return a ^ 0x80000000;
return make_float32(float32_val(a) ^ 0x80000000);
}
#define float32_zero make_float32(0)
/*----------------------------------------------------------------------------
| Software IEC/IEEE double-precision conversion routines.
*----------------------------------------------------------------------------*/
@@ -300,14 +325,16 @@ float64 float64_scalbn( float64, int STATUS_PARAM );
INLINE float64 float64_abs(float64 a)
{
return a & 0x7fffffffffffffffLL;
return make_float64(float64_val(a) & 0x7fffffffffffffffLL);
}
INLINE float64 float64_chs(float64 a)
{
return a ^ 0x8000000000000000LL;
return make_float64(float64_val(a) ^ 0x8000000000000000LL);
}
#define float64_zero make_float64(0)
#ifdef FLOATX80
/*----------------------------------------------------------------------------