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target-ppc: Add Store Quadword Conditional 

This patch adds the Store Quadword Conditionl (stqcx.) instruction
which is introduced in Power ISA 2.07.

Signed-off-by: Tom Musta <tommusta@gmail.com>
[agraf: fix compile error when !TARGET_PPC64]
Signed-off-by: Alexander Graf <agraf@suse.de>
master
Tom Musta 2014-02-10 11:27:01 -06:00 committed by Alexander Graf
parent 9c294d5ab3
commit 27b95bfe62
2 changed files with 38 additions and 1 deletions
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18
linux-user/main.c
View File

@ -1492,7 +1492,7 @@ static int do_store_exclusive(CPUPPCState *env)
{
target_ulong addr;
target_ulong page_addr;
target_ulong val;
target_ulong val, val2 __attribute__((unused));
int flags;
int segv = 0;
@ -1515,6 +1515,13 @@ static int do_store_exclusive(CPUPPCState *env)
case 4: segv = get_user_u32(val, addr); break;
#if defined(TARGET_PPC64)
case 8: segv = get_user_u64(val, addr); break;
case 16: {
segv = get_user_u64(val, addr);
if (!segv) {
segv = get_user_u64(val2, addr + 8);
}
break;
}
#endif
default: abort();
}
@ -1526,6 +1533,15 @@ static int do_store_exclusive(CPUPPCState *env)
case 4: segv = put_user_u32(val, addr); break;
#if defined(TARGET_PPC64)
case 8: segv = put_user_u64(val, addr); break;
case 16: {
if (val2 == env->reserve_val2) {
segv = put_user_u64(val, addr);
if (!segv) {
segv = put_user_u64(val2, addr + 8);
}
}
break;
}
#endif
default: abort();
}

21
target-ppc/translate.c
View File

@ -3329,6 +3329,20 @@ static void gen_conditional_store(DisasContext *ctx, TCGv EA,
gen_qemu_st32(ctx, cpu_gpr[reg], EA);
} else if (size == 2) {
gen_qemu_st16(ctx, cpu_gpr[reg], EA);
#if defined(TARGET_PPC64)
} else if (size == 16) {
TCGv gpr1, gpr2;
if (unlikely(ctx->le_mode)) {
gpr1 = cpu_gpr[reg+1];
gpr2 = cpu_gpr[reg];
} else {
gpr1 = cpu_gpr[reg];
gpr2 = cpu_gpr[reg+1];
}
gen_qemu_st64(ctx, gpr1, EA);
gen_addr_add(ctx, EA, EA, 8);
gen_qemu_st64(ctx, gpr2, EA);
#endif
} else {
gen_qemu_st8(ctx, cpu_gpr[reg], EA);
}
@ -3341,6 +3355,11 @@ static void gen_conditional_store(DisasContext *ctx, TCGv EA,
static void gen_##name(DisasContext *ctx) \
{ \
TCGv t0; \
if (unlikely((len == 16) && (rD(ctx->opcode) & 1))) { \
gen_inval_exception(ctx, \
POWERPC_EXCP_INVAL_INVAL); \
return; \
} \
gen_set_access_type(ctx, ACCESS_RES); \
t0 = tcg_temp_local_new(); \
gen_addr_reg_index(ctx, t0); \
@ -3397,6 +3416,7 @@ static void gen_lqarx(DisasContext *ctx)
/* stdcx. */
STCX(stdcx_, 8);
STCX(stqcx_, 16);
#endif /* defined(TARGET_PPC64) */
/* sync */
@ -9661,6 +9681,7 @@ GEN_HANDLER2(stwcx_, "stwcx.", 0x1F, 0x16, 0x04, 0x00000000, PPC_RES),
GEN_HANDLER(ldarx, 0x1F, 0x14, 0x02, 0x00000000, PPC_64B),
GEN_HANDLER_E(lqarx, 0x1F, 0x14, 0x08, 0, PPC_NONE, PPC2_LSQ_ISA207),
GEN_HANDLER2(stdcx_, "stdcx.", 0x1F, 0x16, 0x06, 0x00000000, PPC_64B),
GEN_HANDLER_E(stqcx_, 0x1F, 0x16, 0x05, 0, PPC_NONE, PPC2_LSQ_ISA207),
#endif
GEN_HANDLER(sync, 0x1F, 0x16, 0x12, 0x039FF801, PPC_MEM_SYNC),
GEN_HANDLER(wait, 0x1F, 0x1E, 0x01, 0x03FFF801, PPC_WAIT),