diff options
author | Tom Musta <tommusta@gmail.com> | 2014-01-07 10:05:57 -0600 |
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committer | Alexander Graf <agraf@suse.de> | 2014-03-05 03:06:41 +0100 |
commit | 587c51f74bcf2f9aa03b7d8e1cff229f74d02860 (patch) | |
tree | adad69e073e6271e106594a01b7fbfee007c83be /target-ppc/translate.c | |
parent | 5c77a786e21e9dc12efc0f0590221e67dd5143da (diff) | |
download | qemu-587c51f74bcf2f9aa03b7d8e1cff229f74d02860.zip qemu-587c51f74bcf2f9aa03b7d8e1cff229f74d02860.tar.gz qemu-587c51f74bcf2f9aa03b7d8e1cff229f74d02860.tar.bz2 |
target-ppc: Add ISA 2.06 stbcx. and sthcx. Instructions
This patch adds the byte and halfword variants of the Store Conditional
instructions. A common macro is introduced and the existing implementations
of stwcx. and stdcx. are refactored to use this macro.
Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc/translate.c')
-rw-r--r-- | target-ppc/translate.c | 91 |
1 files changed, 44 insertions, 47 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index de7de76..9014134 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -3231,8 +3231,8 @@ LARX(lwarx, 4, ld32u); #if defined(CONFIG_USER_ONLY) -static void gen_conditional_store (DisasContext *ctx, TCGv EA, - int reg, int size) +static void gen_conditional_store(DisasContext *ctx, TCGv EA, + int reg, int size) { TCGv t0 = tcg_temp_new(); uint32_t save_exception = ctx->exception; @@ -3246,62 +3246,57 @@ static void gen_conditional_store (DisasContext *ctx, TCGv EA, gen_exception(ctx, POWERPC_EXCP_STCX); ctx->exception = save_exception; } -#endif - -/* stwcx. */ -static void gen_stwcx_(DisasContext *ctx) -{ - TCGv t0; - gen_set_access_type(ctx, ACCESS_RES); - t0 = tcg_temp_local_new(); - gen_addr_reg_index(ctx, t0); - gen_check_align(ctx, t0, 0x03); -#if defined(CONFIG_USER_ONLY) - gen_conditional_store(ctx, t0, rS(ctx->opcode), 4); #else - { - int l1; +static void gen_conditional_store(DisasContext *ctx, TCGv EA, + int reg, int size) +{ + int l1; - tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_so); - l1 = gen_new_label(); - tcg_gen_brcond_tl(TCG_COND_NE, t0, cpu_reserve, l1); - tcg_gen_ori_i32(cpu_crf[0], cpu_crf[0], 1 << CRF_EQ); - gen_qemu_st32(ctx, cpu_gpr[rS(ctx->opcode)], t0); - gen_set_label(l1); - tcg_gen_movi_tl(cpu_reserve, -1); + tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_so); + l1 = gen_new_label(); + tcg_gen_brcond_tl(TCG_COND_NE, EA, cpu_reserve, l1); + tcg_gen_ori_i32(cpu_crf[0], cpu_crf[0], 1 << CRF_EQ); +#if defined(TARGET_PPC64) + if (size == 8) { + gen_qemu_st64(ctx, cpu_gpr[reg], EA); + } else +#endif + if (size == 4) { + gen_qemu_st32(ctx, cpu_gpr[reg], EA); + } else if (size == 2) { + gen_qemu_st16(ctx, cpu_gpr[reg], EA); + } else { + gen_qemu_st8(ctx, cpu_gpr[reg], EA); } + gen_set_label(l1); + tcg_gen_movi_tl(cpu_reserve, -1); +} #endif - tcg_temp_free(t0); + +#define STCX(name, len) \ +static void gen_##name(DisasContext *ctx) \ +{ \ + TCGv t0; \ + gen_set_access_type(ctx, ACCESS_RES); \ + t0 = tcg_temp_local_new(); \ + gen_addr_reg_index(ctx, t0); \ + if (len > 1) { \ + gen_check_align(ctx, t0, (len)-1); \ + } \ + gen_conditional_store(ctx, t0, rS(ctx->opcode), len); \ + tcg_temp_free(t0); \ } +STCX(stbcx_, 1); +STCX(sthcx_, 2); +STCX(stwcx_, 4); + #if defined(TARGET_PPC64) /* ldarx */ LARX(ldarx, 8, ld64); /* stdcx. */ -static void gen_stdcx_(DisasContext *ctx) -{ - TCGv t0; - gen_set_access_type(ctx, ACCESS_RES); - t0 = tcg_temp_local_new(); - gen_addr_reg_index(ctx, t0); - gen_check_align(ctx, t0, 0x07); -#if defined(CONFIG_USER_ONLY) - gen_conditional_store(ctx, t0, rS(ctx->opcode), 8); -#else - { - int l1; - tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_so); - l1 = gen_new_label(); - tcg_gen_brcond_tl(TCG_COND_NE, t0, cpu_reserve, l1); - tcg_gen_ori_i32(cpu_crf[0], cpu_crf[0], 1 << CRF_EQ); - gen_qemu_st64(ctx, cpu_gpr[rS(ctx->opcode)], t0); - gen_set_label(l1); - tcg_gen_movi_tl(cpu_reserve, -1); - } -#endif - tcg_temp_free(t0); -} +STCX(stdcx_, 8); #endif /* defined(TARGET_PPC64) */ /* sync */ @@ -9512,6 +9507,8 @@ GEN_HANDLER(isync, 0x13, 0x16, 0x04, 0x03FFF801, PPC_MEM), GEN_HANDLER_E(lbarx, 0x1F, 0x14, 0x01, 0, PPC_NONE, PPC2_ATOMIC_ISA206), GEN_HANDLER_E(lharx, 0x1F, 0x14, 0x03, 0, PPC_NONE, PPC2_ATOMIC_ISA206), GEN_HANDLER(lwarx, 0x1F, 0x14, 0x00, 0x00000000, PPC_RES), +GEN_HANDLER_E(stbcx_, 0x1F, 0x16, 0x15, 0, PPC_NONE, PPC2_ATOMIC_ISA206), +GEN_HANDLER_E(sthcx_, 0x1F, 0x16, 0x16, 0, PPC_NONE, PPC2_ATOMIC_ISA206), GEN_HANDLER2(stwcx_, "stwcx.", 0x1F, 0x16, 0x04, 0x00000000, PPC_RES), #if defined(TARGET_PPC64) GEN_HANDLER(ldarx, 0x1F, 0x14, 0x02, 0x00000000, PPC_64B), |