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| author | Dragan Mladjenovic <dmladjenovic@wavecomp.com> | 2019-11-19 15:06:20 +0100 |
|---|---|---|
| committer | dragan.mladjenovic <dragan.mladjenovic@rt-rk.com> | 2019-12-16 19:35:22 +0100 |
| commit | 020b2a97bb15f807c0482f0faee2184ed05bcad8 (patch) | |
| tree | 8a3584e674fe634486796da660483c406a13e442 /sysdeps/unix/sysv/linux/mips/mips64/n64 | |
| parent | f1a0eb5b6762b315517469da47735c51bde6f4ad (diff) | |
| download | glibc-020b2a97bb15f807c0482f0faee2184ed05bcad8.tar.gz glibc-020b2a97bb15f807c0482f0faee2184ed05bcad8.tar.xz glibc-020b2a97bb15f807c0482f0faee2184ed05bcad8.zip | |
mips: Do not include hi and lo in __SYSCALL_CLOBBERS for R6
GCC 10 (PR 91233) won't silently allow registers that are not architecturally
available to be present in the clobber list anymore, resulting in build failure
for mips*r6 targets in form of:
...
.../sysdep.h:146:2: error: the register ‘lo’ cannot be clobbered in ‘asm’ for the current target
146 | __asm__ volatile ( \
| ^~~~~~~
This is because base R6 ISA doesn't define hi and lo registers w/o DSP extension.
This patch provides the alternative definitions of __SYSCALL_CLOBBERS for r6
targets that won't include those registers.
* sysdeps/unix/sysv/linux/mips/mips32/sysdep.h (__SYSCALL_CLOBBERS): Exclude
hi and lo from the clobber list for __mips_isa_rev >= 6.
* sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h (__SYSCALL_CLOBBERS): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h (__SYSCALL_CLOBBERS): Likewise.
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/mips64/n64')
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h b/sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h index 821dec920a..8df4d9b961 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h @@ -290,8 +290,13 @@ _sys_result; \ }) -#define __SYSCALL_CLOBBERS "$1", "$3", "$10", "$11", "$12", "$13", \ - "$14", "$15", "$24", "$25", "hi", "lo", "memory" +#if __mips_isa_rev >= 6 +# define __SYSCALL_CLOBBERS "$1", "$3", "$10", "$11", "$12", "$13", \ + "$14", "$15", "$24", "$25", "memory" +#else +# define __SYSCALL_CLOBBERS "$1", "$3", "$10", "$11", "$12", "$13", \ + "$14", "$15", "$24", "$25", "hi", "lo", "memory" +#endif #endif /* __ASSEMBLER__ */ |