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arm64-asm: accept symbolic branch targets

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Benjamin Oldenburg 2026-03-20 20:43:36 +07:00
parent 2203a4407a
commit 356e22677a
1 changed files with 21 additions and 2 deletions
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23
arm64-asm.c
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@ -262,6 +262,22 @@ static void parse_operand(TCCState *s1, Operand *op)
}
}
/* Parse a symbolic/immediate expression operand used by branch instructions. */
static void parse_expr_operand(TCCState *s1, Operand *op)
{
op->type = OP_IM;
op->reg = -1;
op->reg2 = -1;
op->reg_type = 0;
op->shift = 0;
op->addr_mode = ADDR_OFF;
op->reg_tok = 0;
if (tok == '#' || tok == ':' || tok == '@' || tok == '$')
next();
asm_expr(s1, &op->e);
}
/* Parse address operand in brackets [xn, ...] */
static void parse_addr_operand(TCCState *s1, Operand *op)
{
@ -1127,7 +1143,10 @@ static void asm_branch(TCCState *s1, int token)
return;
}
parse_operand(s1, &op);
if (token == TOK_ASM_br || token == TOK_ASM_blr || token == TOK_ASM_ret)
parse_operand(s1, &op);
else
parse_expr_operand(s1, &op);
if (op.type & OP_IM) {
sym = op.e.sym;
@ -1200,7 +1219,7 @@ static void asm_cb(TCCState *s1, int token)
parse_operand(s1, &op1);
if (tok == ',') next();
parse_operand(s1, &op2);
parse_expr_operand(s1, &op2);
rt = op1.reg;
is_64bit = (op1.reg_type & REG_X);