diff options
| author | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2021-05-05 18:10:46 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2021-05-13 19:00:50 +0200 |
| commit | 52a1c621f9d56d18212273c64b4119513a2db1f1 (patch) | |
| tree | 0c466193186cb1882d446cdcc5953e20539c57ae /target/sh4 | |
| parent | dcf20655ffca2b0219d2914db4aadcce4b61fa0a (diff) | |
target/sh4: Return error if CPUClass::get_phys_page_debug() fails
If the get_physical_address() call fails, the SH4 get_phys_page_debug()
handler returns an uninitialized address. Instead return -1, which
correspond to "no page found" (see cpu_get_phys_page_debug() doc
string).
This fixes a warning emitted when building with CFLAGS=-O3
(using GCC 10.2.1 20201125):
target/sh4/helper.c: In function ‘superh_cpu_get_phys_page_debug’:
target/sh4/helper.c:446:12: warning: ‘physical’ may be used uninitialized in this function [-Wmaybe-uninitialized]
446 | return physical;
| ^~~~~~~~
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <20210505161046.1397608-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'target/sh4')
| -rw-r--r-- | target/sh4/helper.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/target/sh4/helper.c b/target/sh4/helper.c index bd8e034f17..2d622081e8 100644 --- a/target/sh4/helper.c +++ b/target/sh4/helper.c @@ -441,9 +441,12 @@ hwaddr superh_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) target_ulong physical; int prot; - get_physical_address(&cpu->env, &physical, &prot, addr, MMU_DATA_LOAD); + if (get_physical_address(&cpu->env, &physical, &prot, addr, MMU_DATA_LOAD) + == MMU_OK) { + return physical; + } - return physical; + return -1; } void cpu_load_tlb(CPUSH4State * env) |