diff options
Diffstat (limited to 'libc/sysdeps/linux/arc')
| -rwxr-xr-x | libc/sysdeps/linux/arc/bits/uClibc_arch_features.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/arc/bits/uClibc_arch_features.h b/libc/sysdeps/linux/arc/bits/uClibc_arch_features.h index 51607240c..94e089d5d 100755 --- a/libc/sysdeps/linux/arc/bits/uClibc_arch_features.h +++ b/libc/sysdeps/linux/arc/bits/uClibc_arch_features.h @@ -41,8 +41,14 @@ /* The default ';' is a comment on ARC. */ #define __UCLIBC_ASM_LINE_SEP__ ` -/* does your target align 64bit values in register pairs ? (32bit arches only) */ -#if defined(__A7__) +/* does your target align 64bit values in register pairs ? (32bit arches only) + * - ARC700 never had any constraint on reg pairs (even if ABI v3) + * - Inital HS ABI (v3: non upstream gcc) had 64-bit data aligned in even-odd + * reg pairs (thus allowed reg holes when passing such args to calls) + * - Upstream gcc (6.x) HS ABI doesn't have that restriction + */ + +#if defined(__A7__) || (__GNUC__ > 4) #undef __UCLIBC_SYSCALL_ALIGN_64BIT__ #else #define __UCLIBC_SYSCALL_ALIGN_64BIT__ |