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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, qemu-stable@nongnu.org,
	Michael Tokarev <mjt@tls.msk.ru>
Subject: [PULL 11/14] tcg/ppc: Use TCG_REG_TMP2 for scratch tcg_out_qemu_st
Date: Tue,  8 Oct 2024 11:51:38 -0700	[thread overview]
Message-ID: <20241008185141.20057-12-richard.henderson@linaro.org> (raw)
In-Reply-To: <20241008185141.20057-1-richard.henderson@linaro.org>

In the fallback when STDBRX is not available, avoid clobbering
TCG_REG_TMP1, which might be h.base, which is still in use.
Use TCG_REG_TMP2 instead.

Cc: qemu-stable@nongnu.org
Fixes: 01a112e2e9 ("tcg/ppc: Reorg tcg_out_tlb_read")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-By: Michael Tokarev <mjt@tls.msk.ru>
---
 tcg/ppc/tcg-target.c.inc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 3f413ce3c1..6be5049d02 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -2704,9 +2704,9 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg datalo, TCGReg datahi,
         uint32_t insn = qemu_stx_opc[opc & (MO_BSWAP | MO_SIZE)];
         if (!have_isa_2_06 && insn == STDBRX) {
             tcg_out32(s, STWBRX | SAB(datalo, h.base, h.index));
-            tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, h.index, 4));
+            tcg_out32(s, ADDI | TAI(TCG_REG_TMP2, h.index, 4));
             tcg_out_shri64(s, TCG_REG_R0, datalo, 32);
-            tcg_out32(s, STWBRX | SAB(TCG_REG_R0, h.base, TCG_REG_TMP1));
+            tcg_out32(s, STWBRX | SAB(TCG_REG_R0, h.base, TCG_REG_TMP2));
         } else {
             tcg_out32(s, insn | SAB(datalo, h.base, h.index));
         }
-- 
2.43.0



  parent reply	other threads:[~2024-10-08 18:54 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-08 18:51 [PULL 00/14] tcg + linux-user patch queue Richard Henderson
2024-10-08 18:51 ` [PULL 01/14] linux-user/flatload: Take mmap_lock in load_flt_binary() Richard Henderson
2024-10-08 18:51 ` [PULL 02/14] linux-user: Fix parse_elf_properties GNU0_MAGIC check Richard Henderson
2024-10-08 18:51 ` [PULL 03/14] linux-user: add openat2 support in linux-user Richard Henderson
2024-10-08 18:51 ` [PULL 04/14] linux-user: add strace support for openat2 Richard Henderson
2024-10-08 18:51 ` [PULL 05/14] linux-user: Trace wait4()'s and waitpid()'s wstatus Richard Henderson
2024-10-08 18:51 ` [PULL 06/14] linux-user: Correct print_sockaddr() format Richard Henderson
2024-10-08 18:51 ` [PULL 07/14] linux-user: Display sockaddr buffer as pointer Richard Henderson
2024-10-08 18:51 ` [PULL 08/14] linux-user: Factor print_buf_len() out Richard Henderson
2024-10-08 18:51 ` [PULL 09/14] linux-user: Add strace for sendto() Richard Henderson
2024-10-08 18:51 ` [PULL 10/14] linux-user: Add strace for recvfrom() Richard Henderson
2024-10-08 18:51 ` Richard Henderson [this message]
2024-10-08 18:51 ` [PULL 12/14] tcg/ppc: Use TCG_REG_TMP2 for scratch index in prepare_host_addr Richard Henderson
2024-10-08 18:51 ` [PULL 13/14] target/m68k: Always return a temporary from gen_lea_mode Richard Henderson
2024-10-08 18:51 ` [PULL 14/14] accel/tcg: Make page_set_flags() documentation public Richard Henderson
2024-10-09 19:11 ` [PULL 00/14] tcg + linux-user patch queue Peter Maydell

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