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arm-asm: Make "!" optional in asm_block_data_transfer_opcode

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Danny Milosavljevic 2021-01-18 16:11:45 +01:00
parent 704c8163fd
commit d60d2bb60e
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GPG Key ID: E71A35542C30BAA5
2 changed files with 15 additions and 12 deletions
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25
arm-asm.c
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@ -329,7 +329,7 @@ static void asm_binary_opcode(TCCState *s1, int token)
static void asm_block_data_transfer_opcode(TCCState *s1, int token)
{
uint32_t opcode;
int op0_exclam;
int op0_exclam = 0;
Operand ops[2];
int nb_ops = 1;
parse_operand(s1, &ops[0]);
@ -388,30 +388,30 @@ static void asm_block_data_transfer_opcode(TCCState *s1, int token)
case TOK_ASM_ldmibeq:
switch (ARM_INSTRUCTION_GROUP(token)) {
case TOK_ASM_stmdaeq: // post-decrement store
opcode = 0x82 << 20;
opcode = 0x80 << 20;
break;
case TOK_ASM_ldmdaeq: // post-decrement load
opcode = 0x83 << 20;
opcode = 0x81 << 20;
break;
case TOK_ASM_stmeq: // post-increment store
case TOK_ASM_stmiaeq: // post-increment store
opcode = 0x8a << 20;
opcode = 0x88 << 20;
break;
case TOK_ASM_ldmeq: // post-increment load
case TOK_ASM_ldmiaeq: // post-increment load
opcode = 0x8b << 20;
opcode = 0x89 << 20;
break;
case TOK_ASM_stmdbeq: // pre-decrement store
opcode = 0x92 << 20;
opcode = 0x90 << 20;
break;
case TOK_ASM_ldmdbeq: // pre-decrement load
opcode = 0x93 << 20;
opcode = 0x91 << 20;
break;
case TOK_ASM_stmibeq: // pre-increment store
opcode = 0x9a << 20;
opcode = 0x98 << 20;
break;
case TOK_ASM_ldmibeq: // pre-increment load
opcode = 0x9b << 20;
opcode = 0x99 << 20;
break;
default:
tcc_error("internal error: This place should not be reached (fallback in asm_block_data_transfer_opcode)");
@ -423,10 +423,11 @@ static void asm_block_data_transfer_opcode(TCCState *s1, int token)
expect("exactly two operands");
else if (ops[0].type != OP_REG32)
expect("(first operand) register");
else if (!op0_exclam)
tcc_error("first operand of '%s' should have an exclamation mark", get_tok_str(token, NULL));
else
else {
if (op0_exclam)
opcode |= 1 << 21; // writeback
asm_emit_opcode(token, opcode | ENCODE_RN(ops[0].reg) | ops[1].regset);
}
break;
default:
expect("block data transfer instruction");

2
tests/arm-asm-testsuite.sh
View File

@ -56,6 +56,8 @@ do
"{r3,r5,r4}" \
"r2!, {r3,r4,r5}" \
"r2!, {r3,r5,r4}" \
"r2, {r3,r4,r5}" \
"r2, {r3,r5,r4}" \
"r2, [r3, r4]" \
"r2, [r3, r4]!" \
"r2, [r3, -r4]" \