diff options
Diffstat (limited to 'libc/sysdeps/linux/nds32/syscall.S')
| -rw-r--r-- | libc/sysdeps/linux/nds32/syscall.S | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/nds32/syscall.S b/libc/sysdeps/linux/nds32/syscall.S new file mode 100644 index 000000000..032c643fd --- /dev/null +++ b/libc/sysdeps/linux/nds32/syscall.S @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <sys/syscall.h> +#include <sysdep.h> + + .text +#ifdef PIC + .pic +#endif + .align 2 + + +#ifdef PIC +#ifdef __NDS32_N1213_43U1H__ +1: + ret +99: + addi $r2, $lp, 0 + jal 1b + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_) + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4) + add $r1, $lp, $r1 + addi $lp, $r2, 0 +#else /* !__NDS32_N1213_43U1H__ */ +99: + mfusr $r15, $PC + sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_ + 4) + ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_ + 8) + add $r1, $r15, $r1 +#endif /* end of __NDS32_N1213_43U1H__ */ + sethi $r15, hi20(__syscall_error@PLT) + ori $r15, $r15, lo12(__syscall_error@PLT) + add $r15, $r15, $r1 + jr $r15 +#else /* !PIC */ +99: + j __syscall_error +#endif /* end of PIC */ + +#ifdef PIC + .pic +#endif + + .align 2 + .globl syscall + .func syscall + .type syscall, @function + +syscall: + syscall __NR_syscall + bgez $r0, 2f + sltsi $r1, $r0, -4096; + beqz $r1, 99b; +2: + ret + .endfunc + .size syscall, .-syscall |