gwj / at91sam9263 · Commits

Commit 3dd9a152e1776c8a99cf5030a2a89db642d6ef43

Authored by blueswir1
1 parent b76482e7

More MMU registers (Robert Reif) 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3738 c046a42c-6fe2-441c-8c8c-71466251a162
Inline Side-by-side
Showing 2 changed files with 18 additions and 7 deletions
target-sparc/cpu.h
  View file @3dd9a15
... ... @@ -215,7 +215,7 @@ typedef struct CPUSPARCState {
215 215 uint64_t dtlb_tag[64];
216 216 uint64_t dtlb_tte[64];
217 217 #else
218   - uint32_t mmuregs[16];
  218 + uint32_t mmuregs[32];
219 219 uint64_t mxccdata[4];
220 220 uint64_t mxccregs[8];
221 221 #endif
... ...
target-sparc/op_helper.c
  View file @3dd9a15
... ... @@ -248,11 +248,15 @@ void helper_ld_asi(int asi, int size, int sign)
248 248 break;
249 249 case 4: /* read MMU regs */
250 250 {
251   - int reg = (T0 >> 8) & 0xf;
  251 + int reg = (T0 >> 8) & 0x1f;
252 252  
253 253 ret = env->mmuregs[reg];
254 254 if (reg == 3) /* Fault status cleared on read */
255   - env->mmuregs[reg] = 0;
  255 + env->mmuregs[3] = 0;
  256 + else if (reg == 0x13) /* Fault status read */
  257 + ret = env->mmuregs[3];
  258 + else if (reg == 0x14) /* Fault address read */
  259 + ret = env->mmuregs[4];
256 260 DPRINTF_MMU("mmu_read: reg[%d] = 0x%08x\n", reg, ret);
257 261 }
258 262 break;
... ... @@ -493,17 +497,18 @@ void helper_st_asi(int asi, int size)
493 497 }
494 498 case 4: /* write MMU regs */
495 499 {
496   - int reg = (T0 >> 8) & 0xf;
  500 + int reg = (T0 >> 8) & 0x1f;
497 501 uint32_t oldreg;
498 502  
499 503 oldreg = env->mmuregs[reg];
500 504 switch(reg) {
501 505 case 0:
502   - env->mmuregs[reg] &= ~(MMU_E | MMU_NF | env->mmu_bm);
503   - env->mmuregs[reg] |= T1 & (MMU_E | MMU_NF | env->mmu_bm);
  506 + env->mmuregs[reg] = (env->mmuregs[reg] & 0xff000000) |
  507 + (T1 & 0x00ffffff);
504 508 // Mappings generated during no-fault mode or MMU
505 509 // disabled mode are invalid in normal mode
506   - if (oldreg != env->mmuregs[reg])
  510 + if ((oldreg & (MMU_E | MMU_NF | env->mmu_bm)) !=
  511 + (env->mmuregs[reg] & (MMU_E | MMU_NF | env->mmu_bm)))
507 512 tlb_flush(env, 1);
508 513 break;
509 514 case 2:
... ... @@ -517,6 +522,12 @@ void helper_st_asi(int asi, int size)
517 522 case 3:
518 523 case 4:
519 524 break;
  525 + case 0x13:
  526 + env->mmuregs[3] = T1;
  527 + break;
  528 + case 0x14:
  529 + env->mmuregs[4] = T1;
  530 + break;
520 531 default:
521 532 env->mmuregs[reg] = T1;
522 533 break;
... ...