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riscv: fix jal: fix reloc and parsing

This commit is contained in:
Ekaitz Zarraga 2024-03-27 00:50:09 +01:00
parent 0239133488
commit e02eec6bde
1 changed files with 17 additions and 10 deletions
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27
riscv64-asm.c
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@ -272,18 +272,25 @@ static void asm_jal_opcode(TCCState *s1, int token){
static const Operand ra = {.type = OP_REG, .reg = 1};
Operand ops[2];
parse_operand(s1, &ops[0]);
if ( ops[0].type != OP_REG ) {
/* no more operands, it's the pseudoinstruction:
* jal offset
* Expand to:
* jal ra, offset
*/
ops[1] = ops[0];
ops[0] = ra;
goto emit;
}
if ( tok == ',')
next();
else {
/* no more operands, it's the pseudoinstruction:
* jal rs
* Expand to:
* jal ra, rs
*/
asm_emit_j(token, 0x6f, &ra, &ops[0]);
return;
}
else
expect("','");
parse_operand(s1, &ops[1]);
emit:
if (ops[1].e.sym && ops[1].e.sym->type.t & (VT_EXTERN | VT_STATIC)){
greloca(cur_text_section, ops[1].e.sym, ind, R_RISCV_JAL, 0);
}
asm_emit_j(token, 0x6f, &ops[0], &ops[1]);
}
@ -722,7 +729,7 @@ static void asm_emit_j(int token, uint32_t opcode, const Operand* rd, const Oper
imm = rs2->e.v;
/* even offsets in a +- 1 MiB range */
if (imm > 0x1ffffe) {
if ((int)imm > (1 << 20) -1 || (int)imm <= -1 * ((1 << 20) -1)) {
tcc_error("'%s': Expected second source operand that is an immediate value between 0 and 0x1fffff", get_tok_str(token, NULL));
return;
}