From 64d51dc31a5bdf5a0571ce48717a7daf1f7dc4aa Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Sat, 8 Apr 2023 08:36:25 -0700
Subject: [PATCH] tcg/ppc: 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>
---
 tcg/ppc/tcg-target.c.inc | 44 ----------------------------------------
 1 file changed, 44 deletions(-)

diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 6a81916e64..218602c10c 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -1962,7 +1962,6 @@ static const uint32_t qemu_stx_opc[(MO_SIZE + MO_BSWAP) + 1] = {
     [MO_BSWAP | MO_UQ] = STDBRX,
 };
 
-#if defined (CONFIG_SOFTMMU)
 static TCGReg ldst_ra_gen(TCGContext *s, const TCGLabelQemuLdst *l, int arg)
 {
     if (arg < 0) {
@@ -2012,49 +2011,6 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
     tcg_out_b(s, 0, lb->raddr);
     return true;
 }
-#else
-static bool tcg_out_fail_alignment(TCGContext *s, TCGLabelQemuLdst *l)
-{
-    if (!reloc_pc14(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) {
-        return false;
-    }
-
-    if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) {
-        TCGReg arg = TCG_REG_R4;
-
-        arg |= (TCG_TARGET_CALL_ARG_I64 == TCG_CALL_ARG_EVEN);
-        if (l->addrlo_reg != arg) {
-            tcg_out_mov(s, TCG_TYPE_I32, arg, l->addrhi_reg);
-            tcg_out_mov(s, TCG_TYPE_I32, arg + 1, l->addrlo_reg);
-        } else if (l->addrhi_reg != arg + 1) {
-            tcg_out_mov(s, TCG_TYPE_I32, arg + 1, l->addrlo_reg);
-            tcg_out_mov(s, TCG_TYPE_I32, arg, l->addrhi_reg);
-        } else {
-            tcg_out_mov(s, TCG_TYPE_I32, TCG_REG_R0, arg);
-            tcg_out_mov(s, TCG_TYPE_I32, arg, arg + 1);
-            tcg_out_mov(s, TCG_TYPE_I32, arg + 1, TCG_REG_R0);
-        }
-    } else {
-        tcg_out_mov(s, TCG_TYPE_TL, TCG_REG_R4, l->addrlo_reg);
-    }
-    tcg_out_mov(s, TCG_TYPE_TL, TCG_REG_R3, TCG_AREG0);
-
-    /* "Tail call" to the helper, with the return address back inline. */
-    tcg_out_call_int(s, 0, (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 /* SOFTMMU */
 
 typedef struct {
     TCGReg base;