gwj / at91sam9263 · Commits

Commit f51bbbfefe73120a85a8d24a029d37c9c0f3a001

Authored by pbrook
1 parent b26eefb6

ARM TCG conversion 2/16. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4139 c046a42c-6fe2-441c-8c8c-71466251a162
Inline Side-by-side
Showing 4 changed files with 12 additions and 9 deletions
target-arm/helper.c
  View file @f51bbbf
... ... @@ -340,6 +340,14 @@ uint32_t HELPER(uxtb16)(uint32_t x)
340 340 return res;
341 341 }
342 342  
  343 +uint32_t HELPER(clz)(uint32_t x)
  344 +{
  345 + int count;
  346 + for (count = 32; x; count--)
  347 + x >>= 1;
  348 + return count;
  349 +}
  350 +
343 351 #if defined(CONFIG_USER_ONLY)
344 352  
345 353 void do_interrupt (CPUState *env)
... ...
target-arm/helpers.h
  View file @f51bbbf
... ... @@ -2,5 +2,6 @@
2 2 #define DEF_HELPER(name, ret, args) ret helper_##name args;
3 3 #endif
4 4  
  5 +DEF_HELPER(clz, uint32_t, (uint32_t))
5 6 DEF_HELPER(sxtb16, uint32_t, (uint32_t))
6 7 DEF_HELPER(uxtb16, uint32_t, (uint32_t))
... ...
target-arm/op.c
  View file @f51bbbf
... ... @@ -475,15 +475,6 @@ void OPPROTO op_rorl_T1_T0_cc(void)
475 475 }
476 476  
477 477 /* misc */
478   -void OPPROTO op_clz_T0(void)
479   -{
480   - int count;
481   - for (count = 32; T0 > 0; count--)
482   - T0 = T0 >> 1;
483   - T0 = count;
484   - FORCE_RET();
485   -}
486   -
487 478 #define SIGNBIT (uint32_t)0x80000000
488 479 /* saturating arithmetic */
489 480 void OPPROTO op_addl_T0_T1_setq(void)
... ...
target-arm/translate.c
  View file @f51bbbf
... ... @@ -205,6 +205,9 @@ static void store_reg(DisasContext *s, int reg, TCGv var)
205 205 #define gen_sxtb16(var) tcg_gen_helper_1_1(HELPER_ADDR(sxtb16), var, var)
206 206 #define gen_uxtb16(var) tcg_gen_helper_1_1(HELPER_ADDR(uxtb16), var, var)
207 207  
  208 +#define gen_op_clz_T0(var) \
  209 + tcg_gen_helper_1_1(HELPER_ADDR(clz), cpu_T[0], cpu_T[0])
  210 +
208 211 /* Dual 16-bit add. Result placed in t0 and t1 is marked as dead.
209 212 tmp = (t0 ^ t1) & 0x8000;
210 213 t0 &= ~0x8000;
... ...