Revision 8636b5d8 vl.c
| b/vl.c | ||
|---|---|---|
| 2113 | 2113 |
qemu_put_be16s(f, &fpregs_format); |
| 2114 | 2114 |
|
| 2115 | 2115 |
for(i = 0; i < 8; i++) {
|
| 2116 |
uint64_t mant; |
|
| 2117 |
uint16_t exp; |
|
| 2118 | 2116 |
#ifdef USE_X86LDOUBLE |
| 2119 |
/* we save the real CPU data (in case of MMX usage only 'mant' |
|
| 2120 |
contains the MMX register */ |
|
| 2121 |
cpu_get_fp80(&mant, &exp, env->fpregs[i].d); |
|
| 2122 |
qemu_put_be64(f, mant); |
|
| 2123 |
qemu_put_be16(f, exp); |
|
| 2117 |
{
|
|
| 2118 |
uint64_t mant; |
|
| 2119 |
uint16_t exp; |
|
| 2120 |
/* we save the real CPU data (in case of MMX usage only 'mant' |
|
| 2121 |
contains the MMX register */ |
|
| 2122 |
cpu_get_fp80(&mant, &exp, env->fpregs[i].d); |
|
| 2123 |
qemu_put_be64(f, mant); |
|
| 2124 |
qemu_put_be16(f, exp); |
|
| 2125 |
} |
|
| 2124 | 2126 |
#else |
| 2125 | 2127 |
/* if we use doubles for float emulation, we save the doubles to |
| 2126 | 2128 |
avoid losing information in case of MMX usage. It can give |
| 2127 | 2129 |
problems if the image is restored on a CPU where long |
| 2128 | 2130 |
doubles are used instead. */ |
| 2129 |
qemu_put_be64(f, env->fpregs[i].xmm.MMX_Q(0));
|
|
| 2131 |
qemu_put_be64(f, env->fpregs[i].mmx.MMX_Q(0));
|
|
| 2130 | 2132 |
#endif |
| 2131 | 2133 |
} |
| 2132 | 2134 |
|
| ... | ... | |
| 2169 | 2171 |
#endif |
| 2170 | 2172 |
} |
| 2171 | 2173 |
|
| 2174 |
#ifdef USE_X86LDOUBLE |
|
| 2172 | 2175 |
/* XXX: add that in a FPU generic layer */ |
| 2173 | 2176 |
union x86_longdouble {
|
| 2174 | 2177 |
uint64_t mant; |
| ... | ... | |
| 2190 | 2193 |
e |= SIGND1(temp) >> 16; |
| 2191 | 2194 |
p->exp = e; |
| 2192 | 2195 |
} |
| 2196 |
#endif |
|
| 2193 | 2197 |
|
| 2194 | 2198 |
int cpu_load(QEMUFile *f, void *opaque, int version_id) |
| 2195 | 2199 |
{
|
| ... | ... | |
| 2218 | 2222 |
for(i = 0; i < 8; i++) {
|
| 2219 | 2223 |
uint64_t mant; |
| 2220 | 2224 |
uint16_t exp; |
| 2221 |
union x86_longdouble *p; |
|
| 2222 | 2225 |
|
| 2223 | 2226 |
switch(fpregs_format) {
|
| 2224 | 2227 |
case 0: |
| ... | ... | |
| 2229 | 2232 |
#else |
| 2230 | 2233 |
/* difficult case */ |
| 2231 | 2234 |
if (guess_mmx) |
| 2232 |
env->fpregs[i].xmm.MMX_Q(0) = mant;
|
|
| 2235 |
env->fpregs[i].mmx.MMX_Q(0) = mant;
|
|
| 2233 | 2236 |
else |
| 2234 | 2237 |
env->fpregs[i].d = cpu_set_fp80(mant, exp); |
| 2235 | 2238 |
#endif |
| ... | ... | |
| 2237 | 2240 |
case 1: |
| 2238 | 2241 |
mant = qemu_get_be64(f); |
| 2239 | 2242 |
#ifdef USE_X86LDOUBLE |
| 2240 |
/* difficult case */ |
|
| 2241 |
p = (void *)&env->fpregs[i]; |
|
| 2242 |
if (guess_mmx) {
|
|
| 2243 |
p->mant = mant; |
|
| 2244 |
p->exp = 0xffff; |
|
| 2245 |
} else {
|
|
| 2246 |
fp64_to_fp80(p, mant); |
|
| 2243 |
{
|
|
| 2244 |
union x86_longdouble *p; |
|
| 2245 |
/* difficult case */ |
|
| 2246 |
p = (void *)&env->fpregs[i]; |
|
| 2247 |
if (guess_mmx) {
|
|
| 2248 |
p->mant = mant; |
|
| 2249 |
p->exp = 0xffff; |
|
| 2250 |
} else {
|
|
| 2251 |
fp64_to_fp80(p, mant); |
|
| 2252 |
} |
|
| 2247 | 2253 |
} |
| 2248 | 2254 |
#else |
| 2249 |
env->fpregs[i].xmm.MMX_Q(0) = mant;
|
|
| 2255 |
env->fpregs[i].mmx.MMX_Q(0) = mant;
|
|
| 2250 | 2256 |
#endif |
| 2251 | 2257 |
break; |
| 2252 | 2258 |
default: |
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