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target/mips: Split out gen_lxl 

Common subroutine for LDL and LWL.
Use tcg_constant_tl instead of tcg_const_tl and t2.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-02-25 17:28:36 -10:00
parent 1852ce5a70
commit 990c162e67
1 changed files with 36 additions and 70 deletions
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106
target/mips/tcg/translate.c
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@ -1995,6 +1995,32 @@ static target_ulong pc_relative_pc(DisasContext *ctx)
return pc;
}
/* LWL or LDL, depending on MemOp. */
static void gen_lxl(DisasContext *ctx, TCGv reg, TCGv addr,
int mem_idx, MemOp mop)
{
int sizem1 = memop_size(mop) - 1;
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
/*
* Do a byte access to possibly trigger a page
* fault with the unaligned address.
*/
tcg_gen_qemu_ld_tl(t1, addr, mem_idx, MO_UB);
tcg_gen_andi_tl(t1, addr, sizem1);
if (!cpu_is_bigendian(ctx)) {
tcg_gen_xori_tl(t1, t1, sizem1);
}
tcg_gen_shli_tl(t1, t1, 3);
tcg_gen_andi_tl(t0, addr, ~sizem1);
tcg_gen_qemu_ld_tl(t0, t0, mem_idx, mop);
tcg_gen_shl_tl(t0, t0, t1);
tcg_gen_shl_tl(t1, tcg_constant_tl(-1), t1);
tcg_gen_andc_tl(t1, reg, t1);
tcg_gen_or_tl(reg, t0, t1);
}
/* Load */
static void gen_ld(DisasContext *ctx, uint32_t opc,
int rt, int base, int offset)
@ -2034,25 +2060,9 @@ static void gen_ld(DisasContext *ctx, uint32_t opc,
break;
case OPC_LDL:
t1 = tcg_temp_new();
/*
* Do a byte access to possibly trigger a page
* fault with the unaligned address.
*/
tcg_gen_qemu_ld_tl(t1, t0, mem_idx, MO_UB);
tcg_gen_andi_tl(t1, t0, 7);
if (!cpu_is_bigendian(ctx)) {
tcg_gen_xori_tl(t1, t1, 7);
}
tcg_gen_shli_tl(t1, t1, 3);
tcg_gen_andi_tl(t0, t0, ~7);
tcg_gen_qemu_ld_tl(t0, t0, mem_idx, MO_TEUQ);
tcg_gen_shl_tl(t0, t0, t1);
t2 = tcg_const_tl(-1);
tcg_gen_shl_tl(t2, t2, t1);
gen_load_gpr(t1, rt);
tcg_gen_andc_tl(t1, t1, t2);
tcg_gen_or_tl(t0, t0, t1);
gen_store_gpr(t0, rt);
gen_lxl(ctx, t1, t0, mem_idx, MO_TEUQ);
gen_store_gpr(t1, rt);
break;
case OPC_LDR:
t1 = tcg_temp_new();
@ -2133,26 +2143,10 @@ static void gen_ld(DisasContext *ctx, uint32_t opc,
/* fall through */
case OPC_LWL:
t1 = tcg_temp_new();
/*
* Do a byte access to possibly trigger a page
* fault with the unaligned address.
*/
tcg_gen_qemu_ld_tl(t1, t0, mem_idx, MO_UB);
tcg_gen_andi_tl(t1, t0, 3);
if (!cpu_is_bigendian(ctx)) {
tcg_gen_xori_tl(t1, t1, 3);
}
tcg_gen_shli_tl(t1, t1, 3);
tcg_gen_andi_tl(t0, t0, ~3);
tcg_gen_qemu_ld_tl(t0, t0, mem_idx, MO_TEUL);
tcg_gen_shl_tl(t0, t0, t1);
t2 = tcg_const_tl(-1);
tcg_gen_shl_tl(t2, t2, t1);
gen_load_gpr(t1, rt);
tcg_gen_andc_tl(t1, t1, t2);
tcg_gen_or_tl(t0, t0, t1);
tcg_gen_ext32s_tl(t0, t0);
gen_store_gpr(t0, rt);
gen_lxl(ctx, t1, t0, mem_idx, MO_TEUL);
tcg_gen_ext32s_tl(t1, t1);
gen_store_gpr(t1, rt);
break;
case OPC_LWRE:
mem_idx = MIPS_HFLAG_UM;
@ -4220,28 +4214,12 @@ static void gen_loongson_lswc2(DisasContext *ctx, int rt,
case OPC_GSLWLC1:
check_cp1_enabled(ctx);
gen_base_offset_addr(ctx, t0, rs, shf_offset);
t1 = tcg_temp_new();
tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_UB);
tcg_gen_andi_tl(t1, t0, 3);
if (!cpu_is_bigendian(ctx)) {
tcg_gen_xori_tl(t1, t1, 3);
}
tcg_gen_shli_tl(t1, t1, 3);
tcg_gen_andi_tl(t0, t0, ~3);
tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx, MO_TEUL);
tcg_gen_shl_tl(t0, t0, t1);
t2 = tcg_const_tl(-1);
tcg_gen_shl_tl(t2, t2, t1);
fp0 = tcg_temp_new_i32();
gen_load_fpr32(ctx, fp0, rt);
t1 = tcg_temp_new();
tcg_gen_ext_i32_tl(t1, fp0);
tcg_gen_andc_tl(t1, t1, t2);
tcg_gen_or_tl(t0, t0, t1);
#if defined(TARGET_MIPS64)
tcg_gen_extrl_i64_i32(fp0, t0);
#else
tcg_gen_ext32s_tl(fp0, t0);
#endif
gen_lxl(ctx, t1, t0, ctx->mem_idx, MO_TEUL);
tcg_gen_trunc_tl_i32(fp0, t1);
gen_store_fpr32(ctx, fp0, rt);
break;
case OPC_GSLWRC1:
@ -4277,21 +4255,9 @@ static void gen_loongson_lswc2(DisasContext *ctx, int rt,
check_cp1_enabled(ctx);
gen_base_offset_addr(ctx, t0, rs, shf_offset);
t1 = tcg_temp_new();
tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_UB);
tcg_gen_andi_tl(t1, t0, 7);
if (!cpu_is_bigendian(ctx)) {
tcg_gen_xori_tl(t1, t1, 7);
}
tcg_gen_shli_tl(t1, t1, 3);
tcg_gen_andi_tl(t0, t0, ~7);
tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx, MO_TEUQ);
tcg_gen_shl_tl(t0, t0, t1);
t2 = tcg_const_tl(-1);
tcg_gen_shl_tl(t2, t2, t1);
gen_load_fpr64(ctx, t1, rt);
tcg_gen_andc_tl(t1, t1, t2);
tcg_gen_or_tl(t0, t0, t1);
gen_store_fpr64(ctx, t0, rt);
gen_lxl(ctx, t1, t0, ctx->mem_idx, MO_TEUQ);
gen_store_fpr64(ctx, t1, rt);
break;
case OPC_GSLDRC1:
check_cp1_enabled(ctx);