diff options
Diffstat (limited to 'arch/riscv/usr/string.S')
| -rw-r--r-- | arch/riscv/usr/string.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/riscv/usr/string.S b/arch/riscv/usr/string.S index 0f3bcc1..3878074 100644 --- a/arch/riscv/usr/string.S +++ b/arch/riscv/usr/string.S @@ -91,3 +91,21 @@ palindrome_yes: palindrome_no: li a0, 0 jr ra + +.globl mstrcmp +.type mstrcmp, @function + +// int mstrcmp(const char *, const char *); +mstrcmp: +1: + lbu t0, 0(a0) + lbu t1, 0(a1) + bne t0, t1, 2f + addi a0, a0, 1 + addi a1, a1, 1 + bnez t0, 1b + li a0, 0 + ret +2: + sub a0, t0, t1 + ret |