diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2023-04-24 14:11:35 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-05-16 15:21:39 -0700 |
| commit | 3df73c7e393b8190372f2d276b7ebc523199cfa1 (patch) | |
| tree | 2c2897e6b23918df16e7cf3398ff38a342ed1074 /tcg/s390x | |
| parent | 30feb7ee4387f40e73a1e938388b60d76c90fc4f (diff) | |
tcg/s390x: Use full load/store helpers in user-only mode
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.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/s390x')
| -rw-r--r-- | tcg/s390x/tcg-target.c.inc | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/tcg/s390x/tcg-target.c.inc b/tcg/s390x/tcg-target.c.inc index 968977be98..de8aed5f77 100644 --- a/tcg/s390x/tcg-target.c.inc +++ b/tcg/s390x/tcg-target.c.inc @@ -1679,7 +1679,6 @@ static void tcg_out_qemu_st_direct(TCGContext *s, MemOp opc, TCGReg data, } } -#if defined(CONFIG_SOFTMMU) static const TCGLdstHelperParam ldst_helper_param = { .ntmp = 1, .tmp = { TCG_TMP0 } }; @@ -1716,34 +1715,6 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) tgen_gotoi(s, S390_CC_ALWAYS, lb->raddr); return true; } -#else -static bool tcg_out_fail_alignment(TCGContext *s, TCGLabelQemuLdst *l) -{ - if (!patch_reloc(l->label_ptr[0], R_390_PC16DBL, - (intptr_t)tcg_splitwx_to_rx(s->code_ptr), 2)) { - return false; - } - - tcg_out_mov(s, TCG_TYPE_TL, TCG_REG_R3, l->addrlo_reg); - tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_R2, TCG_AREG0); - - /* "Tail call" to the helper, with the return address back inline. */ - tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R14, (uintptr_t)l->raddr); - tgen_gotoi(s, S390_CC_ALWAYS, (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. |