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[PATCH v3 22/57] tcg/aarch64: Use full load/store helpers in user-only m
From: |
Richard Henderson |
Subject: |
[PATCH v3 22/57] tcg/aarch64: Use full load/store helpers in user-only mode |
Date: |
Tue, 25 Apr 2023 20:31:11 +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/aarch64/tcg-target.c.inc | 35 -----------------------------------
1 file changed, 35 deletions(-)
diff --git a/tcg/aarch64/tcg-target.c.inc b/tcg/aarch64/tcg-target.c.inc
index 43acb4fbcb..09c9ecad0f 100644
--- a/tcg/aarch64/tcg-target.c.inc
+++ b/tcg/aarch64/tcg-target.c.inc
@@ -1595,7 +1595,6 @@ typedef struct {
TCGType index_ext;
} HostAddress;
-#ifdef CONFIG_SOFTMMU
static const TCGLdstHelperParam ldst_helper_param = {
.ntmp = 1, .tmp = { TCG_REG_TMP }
};
@@ -1628,40 +1627,6 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s,
TCGLabelQemuLdst *lb)
tcg_out_goto(s, lb->raddr);
return true;
}
-#else
-static void tcg_out_adr(TCGContext *s, TCGReg rd, const void *target)
-{
- ptrdiff_t offset = tcg_pcrel_diff(s, target);
- tcg_debug_assert(offset == sextract64(offset, 0, 21));
- tcg_out_insn(s, 3406, ADR, rd, offset);
-}
-
-static bool tcg_out_fail_alignment(TCGContext *s, TCGLabelQemuLdst *l)
-{
- if (!reloc_pc19(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) {
- return false;
- }
-
- tcg_out_mov(s, TCG_TYPE_TL, TCG_REG_X1, l->addrlo_reg);
- tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_X0, TCG_AREG0);
-
- /* "Tail call" to the helper, with the return address back inline. */
- tcg_out_adr(s, TCG_REG_LR, l->raddr);
- tcg_out_goto_long(s, (const void *)(l->is_ld ? helper_unaligned_ld
- : helper_unaligned_st));
- 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 */
/*
* For softmmu, perform the TLB load and compare.
--
2.34.1
- [PATCH v3 11/57] tcg/tci: Use helper_{ld,st}*_mmu for user-only, (continued)
- [PATCH v3 11/57] tcg/tci: Use helper_{ld,st}*_mmu for user-only, Richard Henderson, 2023/04/25
- [PATCH v3 12/57] tcg: Add 128-bit guest memory primitives, Richard Henderson, 2023/04/25
- [PATCH v3 13/57] meson: Detect atomic128 support with optimization, Richard Henderson, 2023/04/25
- [PATCH v3 14/57] tcg/i386: Add have_atomic16, Richard Henderson, 2023/04/25
- [PATCH v3 15/57] accel/tcg: Use have_atomic16 in ldst_atomicity.c.inc, Richard Henderson, 2023/04/25
- [PATCH v3 16/57] accel/tcg: Add aarch64 specific support in ldst_atomicity, Richard Henderson, 2023/04/25
- [PATCH v3 18/57] tcg/aarch64: Detect have_lse, have_lse2 for darwin, Richard Henderson, 2023/04/25
- [PATCH v3 17/57] tcg/aarch64: Detect have_lse, have_lse2 for linux, Richard Henderson, 2023/04/25
- [PATCH v3 19/57] accel/tcg: Add have_lse2 support in ldst_atomicity, Richard Henderson, 2023/04/25
- [PATCH v3 20/57] tcg: Introduce TCG_OPF_TYPE_MASK, Richard Henderson, 2023/04/25
- [PATCH v3 22/57] tcg/aarch64: Use full load/store helpers in user-only mode,
Richard Henderson <=
- [PATCH v3 21/57] tcg/i386: Use full load/store helpers in user-only mode, Richard Henderson, 2023/04/25
- [PATCH v3 23/57] tcg/ppc: Use full load/store helpers in user-only mode, Richard Henderson, 2023/04/25
- [PATCH v3 24/57] tcg/loongarch64: Use full load/store helpers in user-only mode, Richard Henderson, 2023/04/25
- [PATCH v3 25/57] tcg/riscv: Use full load/store helpers in user-only mode, Richard Henderson, 2023/04/25
- [PATCH v3 27/57] tcg/arm: Use full load/store helpers in user-only mode, Richard Henderson, 2023/04/25
- [PATCH v3 26/57] tcg/arm: Adjust constraints on qemu_ld/st, Richard Henderson, 2023/04/25
- [PATCH v3 29/57] tcg/s390x: Use full load/store helpers in user-only mode, Richard Henderson, 2023/04/25
- [PATCH v3 33/57] tcg/sparc64: Split out tcg_out_movi_s32, Richard Henderson, 2023/04/25
- [PATCH v3 28/57] tcg/mips: Use full load/store helpers in user-only mode, Richard Henderson, 2023/04/25
- [PATCH v3 30/57] tcg/sparc64: Allocate %g2 as a third temporary, Richard Henderson, 2023/04/25