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SH: Implement MOVCO.L and MOVLI.L

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* target-sh4/cpu.h (struct CPUSH4State): New field ldst.
* target-sh4/translate.c (cpu_ldst): New.
  (sh4_translate_init): Initialize cpu_ldst.
  (_decode_opc): Support MOVCO.L and MOVLI.L.

(Vladimir Prus)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6666 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-03-02 17:13:21 +00:00
parent c7eb95e118
commit 66c7c80657
2 changed files with 36 additions and 1 deletions
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2
target-sh4/cpu.h
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@ -140,6 +140,8 @@ typedef struct CPUSH4State {
uint32_t prr; /* Processor Revision Register */
uint32_t cvr; /* Cache Version Register */
uint32_t ldst;
CPU_COMMON tlb_t utlb[UTLB_SIZE]; /* unified translation table */
tlb_t itlb[ITLB_SIZE]; /* instruction translation table */
void *intc_handle;

35
target-sh4/translate.c
View File

@ -72,7 +72,7 @@ static TCGv_ptr cpu_env;
static TCGv cpu_gregs[24];
static TCGv cpu_pc, cpu_sr, cpu_ssr, cpu_spc, cpu_gbr;
static TCGv cpu_vbr, cpu_sgr, cpu_dbr, cpu_mach, cpu_macl;
static TCGv cpu_pr, cpu_fpscr, cpu_fpul;
static TCGv cpu_pr, cpu_fpscr, cpu_fpul, cpu_ldst;
static TCGv cpu_fregs[32];
/* internal register indexes */
@ -144,6 +144,8 @@ static void sh4_translate_init(void)
cpu_delayed_pc = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUState, delayed_pc),
"_delayed_pc_");
cpu_ldst = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUState, ldst), "_ldst_");
for (i = 0; i < 32; i++)
cpu_fregs[i] = tcg_global_mem_new_i32(TCG_AREG0,
@ -1559,6 +1561,37 @@ static void _decode_opc(DisasContext * ctx)
case 0x0029: /* movt Rn */
tcg_gen_andi_i32(REG(B11_8), cpu_sr, SR_T);
return;
case 0x0073:
/* MOVCO.L
LDST -> T
If (T == 1) R0 -> (Rn)
0 -> LDST
*/
if (ctx->features & SH_FEATURE_SH4A) {
int label = gen_new_label();
gen_clr_t();
tcg_gen_or_i32(cpu_sr, cpu_sr, cpu_ldst);
tcg_gen_brcondi_i32(TCG_COND_EQ, cpu_ldst, 0, label);
tcg_gen_qemu_st32(REG(0), REG(B11_8), ctx->memidx);
gen_set_label(label);
tcg_gen_movi_i32(cpu_ldst, 0);
return;
} else
break;
case 0x0063:
/* MOVLI.L @Rm,R0
1 -> LDST
(Rm) -> R0
When interrupt/exception
occurred 0 -> LDST
*/
if (ctx->features & SH_FEATURE_SH4A) {
tcg_gen_movi_i32(cpu_ldst, 0);
tcg_gen_qemu_ld32s(REG(0), REG(B11_8), ctx->memidx);
tcg_gen_movi_i32(cpu_ldst, 1);
return;
} else
break;
case 0x0093: /* ocbi @Rn */
{
TCGv dummy = tcg_temp_new();