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[PATCH v4 24/57] tcg/loongarch64: Use full load/store helpers in user-on
From: |
Richard Henderson |
Subject: |
[PATCH v4 24/57] tcg/loongarch64: Use full load/store helpers in user-only mode |
Date: |
Wed, 3 May 2023 08:06:23 +0100 |
Instead of using helper_unaligned_{ld,st}, use the full load/store helpers.
This will allow the fast path to increase alignment to implement atomicity
while not immediately raising an alignment exception.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/loongarch64/tcg-target.c.inc | 30 ------------------------------
1 file changed, 30 deletions(-)
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index d1bc29826f..e651ec5c71 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -783,7 +783,6 @@ static bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg
val,
* Load/store helpers for SoftMMU, and qemu_ld/st implementations
*/
-#if defined(CONFIG_SOFTMMU)
static bool tcg_out_goto(TCGContext *s, const tcg_insn_unit *target)
{
tcg_out_opc_b(s, 0);
@@ -822,35 +821,6 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s,
TCGLabelQemuLdst *l)
tcg_out_call_int(s, qemu_st_helpers[opc & MO_SIZE], false);
return tcg_out_goto(s, l->raddr);
}
-#else
-static bool tcg_out_fail_alignment(TCGContext *s, TCGLabelQemuLdst *l)
-{
- /* resolve label address */
- if (!reloc_br_sk16(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) {
- return false;
- }
-
- tcg_out_mov(s, TCG_TYPE_TL, TCG_REG_A1, l->addrlo_reg);
- tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_A0, TCG_AREG0);
-
- /* tail call, with the return address back inline. */
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_RA, (uintptr_t)l->raddr);
- tcg_out_call_int(s, (const void *)(l->is_ld ? helper_unaligned_ld
- : helper_unaligned_st), true);
- return true;
-}
-
-static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
-{
- return tcg_out_fail_alignment(s, l);
-}
-
-static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
-{
- return tcg_out_fail_alignment(s, l);
-}
-
-#endif /* CONFIG_SOFTMMU */
typedef struct {
TCGReg base;
--
2.34.1
- Re: [PATCH v4 18/57] tcg/aarch64: Detect have_lse, have_lse2 for darwin, (continued)
- [PATCH v4 19/57] accel/tcg: Add have_lse2 support in ldst_atomicity, Richard Henderson, 2023/05/03
- [PATCH v4 20/57] tcg: Introduce TCG_OPF_TYPE_MASK, Richard Henderson, 2023/05/03
- [PATCH v4 23/57] tcg/ppc: Use full load/store helpers in user-only mode, Richard Henderson, 2023/05/03
- [PATCH v4 21/57] tcg/i386: Use full load/store helpers in user-only mode, Richard Henderson, 2023/05/03
- [PATCH v4 22/57] tcg/aarch64: Use full load/store helpers in user-only mode, Richard Henderson, 2023/05/03
- [PATCH v4 24/57] tcg/loongarch64: Use full load/store helpers in user-only mode,
Richard Henderson <=
- [PATCH v4 25/57] tcg/riscv: Use full load/store helpers in user-only mode, Richard Henderson, 2023/05/03
- [PATCH v4 26/57] tcg/arm: Adjust constraints on qemu_ld/st, Richard Henderson, 2023/05/03
- [PATCH v4 27/57] tcg/arm: Use full load/store helpers in user-only mode, Richard Henderson, 2023/05/03
- [PATCH v4 29/57] tcg/s390x: Use full load/store helpers in user-only mode, Richard Henderson, 2023/05/03