gwj / at91sam9263 · Commits

Commit eb44b959de4a888d0441f05483ced589b64b4d1f

Authored by aurel32
1 parent 330c483b

target-ppc: update nip before calling an helper in FP instructions 

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6045 c046a42c-6fe2-441c-8c8c-71466251a162
Inline Side-by-side
Showing 1 changed file with 32 additions and 2 deletions
target-ppc/translate.c
  View file @eb44b95
... ... @@ -2072,6 +2072,8 @@ GEN_HANDLER(f##name, op1, op2, 0xFF, 0x00000000, type) \
2072 2072 gen_exception(ctx, POWERPC_EXCP_FPU); \
2073 2073 return; \
2074 2074 } \
  2075 + /* NIP cannot be restored if the memory exception comes from an helper */ \
  2076 + gen_update_nip(ctx, ctx->nip - 4); \
2075 2077 gen_reset_fpstatus(); \
2076 2078 gen_helper_f##op(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)], \
2077 2079 cpu_fpr[rC(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]); \
... ... @@ -2093,6 +2095,8 @@ GEN_HANDLER(f##name, op1, op2, 0xFF, inval, type) \
2093 2095 gen_exception(ctx, POWERPC_EXCP_FPU); \
2094 2096 return; \
2095 2097 } \
  2098 + /* NIP cannot be restored if the memory exception comes from an helper */ \
  2099 + gen_update_nip(ctx, ctx->nip - 4); \
2096 2100 gen_reset_fpstatus(); \
2097 2101 gen_helper_f##op(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)], \
2098 2102 cpu_fpr[rB(ctx->opcode)]); \
... ... @@ -2113,6 +2117,8 @@ GEN_HANDLER(f##name, op1, op2, 0xFF, inval, type) \
2113 2117 gen_exception(ctx, POWERPC_EXCP_FPU); \
2114 2118 return; \
2115 2119 } \
  2120 + /* NIP cannot be restored if the memory exception comes from an helper */ \
  2121 + gen_update_nip(ctx, ctx->nip - 4); \
2116 2122 gen_reset_fpstatus(); \
2117 2123 gen_helper_f##op(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)], \
2118 2124 cpu_fpr[rC(ctx->opcode)]); \
... ... @@ -2133,6 +2139,8 @@ GEN_HANDLER(f##name, 0x3F, op2, op3, 0x001F0000, type) \
2133 2139 gen_exception(ctx, POWERPC_EXCP_FPU); \
2134 2140 return; \
2135 2141 } \
  2142 + /* NIP cannot be restored if the memory exception comes from an helper */ \
  2143 + gen_update_nip(ctx, ctx->nip - 4); \
2136 2144 gen_reset_fpstatus(); \
2137 2145 gen_helper_f##name(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]); \
2138 2146 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], \
... ... @@ -2146,6 +2154,8 @@ GEN_HANDLER(f##name, op1, op2, 0xFF, 0x001F07C0, type) \
2146 2154 gen_exception(ctx, POWERPC_EXCP_FPU); \
2147 2155 return; \
2148 2156 } \
  2157 + /* NIP cannot be restored if the memory exception comes from an helper */ \
  2158 + gen_update_nip(ctx, ctx->nip - 4); \
2149 2159 gen_reset_fpstatus(); \
2150 2160 gen_helper_f##name(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]); \
2151 2161 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], \
... ... @@ -2175,6 +2185,8 @@ GEN_HANDLER(frsqrtes, 0x3B, 0x1A, 0xFF, 0x001F07C0, PPC_FLOAT_FRSQRTES)
2175 2185 gen_exception(ctx, POWERPC_EXCP_FPU);
2176 2186 return;
2177 2187 }
  2188 + /* NIP cannot be restored if the memory exception comes from an helper */
  2189 + gen_update_nip(ctx, ctx->nip - 4);
2178 2190 gen_reset_fpstatus();
2179 2191 gen_helper_frsqrte(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]);
2180 2192 gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rD(ctx->opcode)]);
... ... @@ -2193,6 +2205,8 @@ GEN_HANDLER(fsqrt, 0x3F, 0x16, 0xFF, 0x001F07C0, PPC_FLOAT_FSQRT)
2193 2205 gen_exception(ctx, POWERPC_EXCP_FPU);
2194 2206 return;
2195 2207 }
  2208 + /* NIP cannot be restored if the memory exception comes from an helper */
  2209 + gen_update_nip(ctx, ctx->nip - 4);
2196 2210 gen_reset_fpstatus();
2197 2211 gen_helper_fsqrt(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]);
2198 2212 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 1, Rc(ctx->opcode) != 0);
... ... @@ -2204,6 +2218,8 @@ GEN_HANDLER(fsqrts, 0x3B, 0x16, 0xFF, 0x001F07C0, PPC_FLOAT_FSQRT)
2204 2218 gen_exception(ctx, POWERPC_EXCP_FPU);
2205 2219 return;
2206 2220 }
  2221 + /* NIP cannot be restored if the memory exception comes from an helper */
  2222 + gen_update_nip(ctx, ctx->nip - 4);
2207 2223 gen_reset_fpstatus();
2208 2224 gen_helper_fsqrt(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]);
2209 2225 gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rD(ctx->opcode)]);
... ... @@ -2254,6 +2270,8 @@ GEN_HANDLER(fcmpo, 0x3F, 0x00, 0x01, 0x00600001, PPC_FLOAT)
2254 2270 gen_exception(ctx, POWERPC_EXCP_FPU);
2255 2271 return;
2256 2272 }
  2273 + /* NIP cannot be restored if the memory exception comes from an helper */
  2274 + gen_update_nip(ctx, ctx->nip - 4);
2257 2275 gen_reset_fpstatus();
2258 2276 crf = tcg_const_i32(crfD(ctx->opcode));
2259 2277 gen_helper_fcmpo(cpu_fpr[rA(ctx->opcode)], cpu_fpr[rB(ctx->opcode)], crf);
... ... @@ -2269,6 +2287,8 @@ GEN_HANDLER(fcmpu, 0x3F, 0x00, 0x00, 0x00600001, PPC_FLOAT)
2269 2287 gen_exception(ctx, POWERPC_EXCP_FPU);
2270 2288 return;
2271 2289 }
  2290 + /* NIP cannot be restored if the memory exception comes from an helper */
  2291 + gen_update_nip(ctx, ctx->nip - 4);
2272 2292 gen_reset_fpstatus();
2273 2293 crf = tcg_const_i32(crfD(ctx->opcode));
2274 2294 gen_helper_fcmpu(cpu_fpr[rA(ctx->opcode)], cpu_fpr[rB(ctx->opcode)], crf);
... ... @@ -2340,7 +2360,10 @@ GEN_HANDLER(mtfsb0, 0x3F, 0x06, 0x02, 0x001FF800, PPC_FLOAT)
2340 2360 crb = 31 - crbD(ctx->opcode);
2341 2361 gen_reset_fpstatus();
2342 2362 if (likely(crb != FPSCR_FEX && crb != FPSCR_VX)) {
2343   - TCGv_i32 t0 = tcg_const_i32(crb);
  2363 + TCGv_i32 t0;
  2364 + /* NIP cannot be restored if the memory exception comes from an helper */
  2365 + gen_update_nip(ctx, ctx->nip - 4);
  2366 + t0 = tcg_const_i32(crb);
2344 2367 gen_helper_fpscr_clrbit(t0);
2345 2368 tcg_temp_free_i32(t0);
2346 2369 }
... ... @@ -2362,7 +2385,10 @@ GEN_HANDLER(mtfsb1, 0x3F, 0x06, 0x01, 0x001FF800, PPC_FLOAT)
2362 2385 gen_reset_fpstatus();
2363 2386 /* XXX: we pretend we can only do IEEE floating-point computations */
2364 2387 if (likely(crb != FPSCR_FEX && crb != FPSCR_VX && crb != FPSCR_NI)) {
2365   - TCGv_i32 t0 = tcg_const_i32(crb);
  2388 + TCGv_i32 t0;
  2389 + /* NIP cannot be restored if the memory exception comes from an helper */
  2390 + gen_update_nip(ctx, ctx->nip - 4);
  2391 + t0 = tcg_const_i32(crb);
2366 2392 gen_helper_fpscr_setbit(t0);
2367 2393 tcg_temp_free_i32(t0);
2368 2394 }
... ... @@ -2382,6 +2408,8 @@ GEN_HANDLER(mtfsf, 0x3F, 0x07, 0x16, 0x02010000, PPC_FLOAT)
2382 2408 gen_exception(ctx, POWERPC_EXCP_FPU);
2383 2409 return;
2384 2410 }
  2411 + /* NIP cannot be restored if the memory exception comes from an helper */
  2412 + gen_update_nip(ctx, ctx->nip - 4);
2385 2413 gen_reset_fpstatus();
2386 2414 t0 = tcg_const_i32(FM(ctx->opcode));
2387 2415 gen_helper_store_fpscr(cpu_fpr[rB(ctx->opcode)], t0);
... ... @@ -2406,6 +2434,8 @@ GEN_HANDLER(mtfsfi, 0x3F, 0x06, 0x04, 0x006f0800, PPC_FLOAT)
2406 2434 }
2407 2435 bf = crbD(ctx->opcode) >> 2;
2408 2436 sh = 7 - bf;
  2437 + /* NIP cannot be restored if the memory exception comes from an helper */
  2438 + gen_update_nip(ctx, ctx->nip - 4);
2409 2439 gen_reset_fpstatus();
2410 2440 t0 = tcg_const_i64(FPIMM(ctx->opcode) << (4 * sh));
2411 2441 t1 = tcg_const_i32(1 << sh);
... ...