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target-ppc: move out stqcx impementation 

Being a 16byte operation, qemu_ld/st still does not support this. Move
this out so other store operation can use qemu_ld/st in the following
patch. Also, convert it to two MO_Q operations for stqcx.

Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Nikunj A Dadhania 2016-09-12 12:11:37 +05:30 committed by David Gibson
parent 48793c95c9
commit aa2008af0c
1 changed files with 47 additions and 22 deletions
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69
target-ppc/translate.c
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@ -3105,22 +3105,6 @@ 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 , EA8;
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_i64(ctx, gpr1, EA);
EA8 = tcg_temp_local_new();
gen_addr_add(ctx, EA8, EA, 8);
gen_qemu_st64_i64(ctx, gpr2, EA8);
tcg_temp_free(EA8);
#endif
} else {
gen_qemu_st8(ctx, cpu_gpr[reg], EA);
}
@ -3133,11 +3117,6 @@ 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); \
@ -3190,9 +3169,55 @@ static void gen_lqarx(DisasContext *ctx)
tcg_temp_free(EA);
}
/* stqcx. */
static void gen_stqcx_(DisasContext *ctx)
{
TCGv EA;
int reg = rS(ctx->opcode);
int len = 16;
#if !defined(CONFIG_USER_ONLY)
TCGLabel *l1;
TCGv gpr1, gpr2;
#endif
if (unlikely((rD(ctx->opcode) & 1))) {
gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
return;
}
gen_set_access_type(ctx, ACCESS_RES);
EA = tcg_temp_local_new();
gen_addr_reg_index(ctx, EA);
if (len > 1) {
gen_check_align(ctx, EA, (len) - 1);
}
#if defined(CONFIG_USER_ONLY)
gen_conditional_store(ctx, EA, reg, 16);
#else
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 (unlikely(ctx->le_mode)) {
gpr1 = cpu_gpr[reg + 1];
gpr2 = cpu_gpr[reg];
} else {
gpr1 = cpu_gpr[reg];
gpr2 = cpu_gpr[reg + 1];
}
tcg_gen_qemu_st_tl(gpr1, EA, ctx->mem_idx, DEF_MEMOP(MO_Q));
gen_addr_add(ctx, EA, EA, 8);
tcg_gen_qemu_st_tl(gpr2, EA, ctx->mem_idx, DEF_MEMOP(MO_Q));
gen_set_label(l1);
tcg_gen_movi_tl(cpu_reserve, -1);
#endif
tcg_temp_free(EA);
}
/* stdcx. */
STCX(stdcx_, 8);
STCX(stqcx_, 16);
#endif /* defined(TARGET_PPC64) */
/* sync */