From 9b76a64f96b2a8359e9e1332f381137557d106a2 Mon Sep 17 00:00:00 2001
From: Danny Milosavljevic <dannym@scratchpost.org>
Date: Wed, 7 Apr 2021 11:56:06 +0200
Subject: [PATCH] riscv64-asm: Implement asm_clobber
---
riscv64-asm.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/riscv64-asm.c b/riscv64-asm.c
index 9b41bee8..30662df6 100644
--- a/riscv64-asm.c
+++ b/riscv64-asm.c
@@ -694,7 +694,19 @@ ST_FUNC void asm_compute_constraints(ASMOperand *operands,
ST_FUNC void asm_clobber(uint8_t *clobber_regs, const char *str)
{
- tcc_error("RISCV64 asm not implemented.");
+ int reg;
+ TokenSym *ts;
+
+ if (!strcmp(str, "memory") ||
+ !strcmp(str, "cc") ||
+ !strcmp(str, "flags"))
+ return;
+ ts = tok_alloc(str, strlen(str));
+ reg = asm_parse_regvar(ts->tok);
+ if (reg == -1) {
+ tcc_error("invalid clobber register '%s'", str);
+ }
+ clobber_regs[reg] = 1;
}
ST_FUNC int asm_parse_regvar (int t)