3eae454a42
- Improve compatibility with gcc 11: target-sh4-Return-error-if-CPUClass-get_.patch tcg-arm-Fix-tcg_out_op-function-signatur.patch - Enable zstd compression option to qcow2 OBS-URL: https://build.opensuse.org/request/show/899990 OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=655
52 lines
1.9 KiB
Diff
52 lines
1.9 KiB
Diff
From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <f4bug@amsat.org>
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Date: Wed, 5 May 2021 18:10:46 +0200
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Subject: target/sh4: Return error if CPUClass::get_phys_page_debug() fails
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Git-commit: 52a1c621f9d56d18212273c64b4119513a2db1f1
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If the get_physical_address() call fails, the SH4 get_phys_page_debug()
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handler returns an uninitialized address. Instead return -1, which
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correspond to "no page found" (see cpu_get_phys_page_debug() doc
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string).
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This fixes a warning emitted when building with CFLAGS=-O3
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(using GCC 10.2.1 20201125):
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target/sh4/helper.c: In function ‘superh_cpu_get_phys_page_debug’:
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target/sh4/helper.c:446:12: warning: ‘physical’ may be used uninitialized in this function [-Wmaybe-uninitialized]
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446 | return physical;
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| ^~~~~~~~
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Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
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Message-Id: <20210505161046.1397608-1-f4bug@amsat.org>
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Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Signed-off-by: Jose R. Ziviani <jziviani@suse.de>
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---
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target/sh4/helper.c | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/target/sh4/helper.c b/target/sh4/helper.c
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index bd8e034f174d530354913acb7fa1..2d622081e85afec6e40034c24508 100644
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--- a/target/sh4/helper.c
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+++ b/target/sh4/helper.c
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@@ -441,9 +441,12 @@ hwaddr superh_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
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target_ulong physical;
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int prot;
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- get_physical_address(&cpu->env, &physical, &prot, addr, MMU_DATA_LOAD);
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+ if (get_physical_address(&cpu->env, &physical, &prot, addr, MMU_DATA_LOAD)
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+ == MMU_OK) {
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+ return physical;
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+ }
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- return physical;
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+ return -1;
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}
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void cpu_load_tlb(CPUSH4State * env)
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