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include/aarch64/host: Fix atomic16_fetch_{and,or}

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The tmp[lh] variables were defined as inputs to the
asm rather than outputs, which meant that the compiler
rightly diagnosed uninitialized inputs.

Reported-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2025-12-03 15:19:40 +00:00
parent 6833615bfd
commit ff633bc5d5
1 changed files with 6 additions and 6 deletions
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12
host/include/aarch64/host/atomic128-cas.h.inc
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@@ -67,9 +67,9 @@ static inline Int128 atomic16_fetch_and(Int128 *ptr, Int128 new)
"stlxp %w[tmp], %[tmpl], %[tmph], %[mem]\n\t"
"cbnz %w[tmp], 0b"
: [mem] "+m"(*ptr), [tmp] "=&r"(tmp),
[oldl] "=&r"(oldl), [oldh] "=&r"(oldh)
: [newl] "r"(newl), [newh] "r"(newh),
[tmpl] "r"(tmpl), [tmph] "r"(tmph)
[oldl] "=&r"(oldl), [oldh] "=&r"(oldh),
[tmpl] "=&r"(tmpl), [tmph] "=&r"(tmph)
: [newl] "r"(newl), [newh] "r"(newh)
: "memory");
return int128_make128(oldl, oldh);
@@ -87,9 +87,9 @@ static inline Int128 atomic16_fetch_or(Int128 *ptr, Int128 new)
"stlxp %w[tmp], %[tmpl], %[tmph], %[mem]\n\t"
"cbnz %w[tmp], 0b"
: [mem] "+m"(*ptr), [tmp] "=&r"(tmp),
[oldl] "=&r"(oldl), [oldh] "=&r"(oldh)
: [newl] "r"(newl), [newh] "r"(newh),
[tmpl] "r"(tmpl), [tmph] "r"(tmph)
[oldl] "=&r"(oldl), [oldh] "=&r"(oldh),
[tmpl] "=&r"(tmpl), [tmph] "=&r"(tmph)
: [newl] "r"(newl), [newh] "r"(newh)
: "memory");
return int128_make128(oldl, oldh);