gwj / at91sam9263 · Commits

Commit 109719ec9e311b800470286004670aff6ddd9736

Authored by malc
1 parent 0b7c1d89

Avoid clobbering input/aliased registers in !SOFTMMU+64bit+bswap case 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5033 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 10 additions and 9 deletions
tcg/ppc64/tcg-target.c
  View file @109719e
... ... @@ -579,9 +579,9 @@ static void tcg_out_tlb_read (TCGContext *s, int r0, int r1, int r2,
579 579  
580 580 static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc)
581 581 {
582   - int addr_reg, data_reg, r0, mem_index, s_bits, bswap;
  582 + int addr_reg, data_reg, r0, r1, mem_index, s_bits, bswap;
583 583 #ifdef CONFIG_SOFTMMU
584   - int r1, r2;
  584 + int r2;
585 585 void *label1_ptr, *label2_ptr;
586 586 #endif
587 587  
... ... @@ -653,6 +653,7 @@ static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc)
653 653 tcg_out_rld (s, RLDICL, addr_reg, addr_reg, 0, 32);
654 654 #endif
655 655 r0 = addr_reg;
  656 + r1 = 4;
656 657 #endif
657 658  
658 659 #ifdef TARGET_WORDS_BIGENDIAN
... ... @@ -693,11 +694,11 @@ static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc)
693 694 break;
694 695 case 3:
695 696 if (bswap) {
696   - tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0));
697   - tcg_out32 (s, ADDI | RT (r0) | RA (r0) | 4);
698   - tcg_out32 (s, LWBRX | RT (r0) | RB (r0));
699   - tcg_out_rld (s, RLDICR, r0, r0, 32, 31);
700   - tcg_out32 (s, OR | SAB (r0, data_reg, data_reg));
  697 + tcg_out32 (s, LWBRX | RT (0) | RB (r0));
  698 + tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4);
  699 + tcg_out32 (s, LWBRX | RT (data_reg) | RB (r1));
  700 + tcg_out_rld (s, RLDICR, data_reg, data_reg, 32, 31);
  701 + tcg_out32 (s, OR | SAB (0, data_reg, data_reg));
701 702 }
702 703 else tcg_out32 (s, LD | RT (data_reg) | RA (r0));
703 704 break;
... ... @@ -788,9 +789,9 @@ static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc)
788 789 case 3:
789 790 if (bswap) {
790 791 tcg_out32 (s, STWBRX | RS (data_reg) | RA (0) | RB (r0));
791   - tcg_out32 (s, ADDI | RT (r0) | RA (r0) | 4);
  792 + tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4);
792 793 tcg_out_rld (s, RLDICL, 0, data_reg, 32, 0);
793   - tcg_out32 (s, STWBRX | RS (0) | RA (0) | RB (r0));
  794 + tcg_out32 (s, STWBRX | RS (0) | RA (0) | RB (r1));
794 795 }
795 796 else tcg_out32 (s, STD | RS (data_reg) | RA (r0));
796 797 break;
... ...