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| author | Pierrick Bouvier <pierrick.bouvier@linaro.org> | 2023-02-21 16:30:04 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-02-21 13:45:48 -1000 |
| commit | dbd672c87f19949bb62bfb1fb3a97b9729fd7560 (patch) | |
| tree | 48261c1a254b426e8516c609ee0f3cf39beb95b9 /meson.build | |
| parent | b3c326029554a7d134e26e749240ba2d8ac288b1 (diff) | |
| download | qemu-dbd672c87f19949bb62bfb1fb3a97b9729fd7560.zip qemu-dbd672c87f19949bb62bfb1fb3a97b9729fd7560.tar.gz qemu-dbd672c87f19949bb62bfb1fb3a97b9729fd7560.tar.bz2 | |
sysemu/os-win32: fix setjmp/longjmp on windows-arm64
Windows implementation of setjmp/longjmp is done in
C:/WINDOWS/system32/ucrtbase.dll. Alas, on arm64, it seems to *always*
perform stack unwinding, which crashes from generated code.
By using alternative implementation built in mingw, we avoid doing stack
unwinding and this fixes crash when calling longjmp.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230221153006.20300-3-pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'meson.build')
| -rw-r--r-- | meson.build | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/meson.build b/meson.build index bc7e5b1..6a139e7 100644 --- a/meson.build +++ b/meson.build @@ -2466,6 +2466,27 @@ if targetos == 'windows' }''', name: '_lock_file and _unlock_file')) endif +if targetos == 'windows' + mingw_has_setjmp_longjmp = cc.links(''' + #include <setjmp.h> + int main(void) { + /* + * These functions are not available in setjmp header, but may be + * available at link time, from libmingwex.a. + */ + extern int __mingw_setjmp(jmp_buf); + extern void __attribute__((noreturn)) __mingw_longjmp(jmp_buf, int); + jmp_buf env; + __mingw_setjmp(env); + __mingw_longjmp(env, 0); + } + ''', name: 'mingw setjmp and longjmp') + + if cpu == 'aarch64' and not mingw_has_setjmp_longjmp + error('mingw must provide setjmp/longjmp for windows-arm64') + endif +endif + ######################## # Target configuration # ######################## |