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arm-asm: Add movt

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Danny Milosavljevic 2020-12-28 23:40:30 +01:00
parent 86cc9c587b
commit c882d03673
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GPG key ID: E71A35542C30BAA5
2 changed files with 16 additions and 1 deletions
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16
arm-asm.c
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@ -226,7 +226,20 @@ static void asm_binary_opcode(TCCState *s1, int token)
tcc_warning("Using 'sp' as operand with '%s' is deprecated by ARM", get_tok_str(token, NULL));
if (ops[1].type != OP_REG32) {
expect("(source operand) register");
switch (ARM_INSTRUCTION_GROUP(token)) {
case TOK_ASM_movteq:
if (ops[1].type == OP_IM8 || ops[1].type == OP_IM8N || ops[1].type == OP_IM32) {
if (ops[1].e.v >= 0 && ops[1].e.v <= 0xFFFF) {
uint16_t immediate_value = ops[1].e.v;
asm_emit_opcode(token, 0x3400000 | (ops[0].reg << 12) | (immediate_value & 0xF000) << 4 | (immediate_value & 0xFFF));
} else
expect("(source operand) immediate 16 bit value");
} else
expect("(source operand) immediate");
break;
default:
expect("(source operand) register");
}
return;
}
@ -1120,6 +1133,7 @@ ST_FUNC void asm_opcode(TCCState *s1, int token)
case TOK_ASM_sxtheq:
case TOK_ASM_uxtbeq:
case TOK_ASM_uxtheq:
case TOK_ASM_movteq:
return asm_binary_opcode(s1, token);
case TOK_ASM_ldreq:

1
arm-tok.h
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@ -69,6 +69,7 @@
DEF_ASM_CONDED(sxth)
DEF_ASM_CONDED(uxtb)
DEF_ASM_CONDED(uxth)
DEF_ASM_CONDED(movt)
/* multiplication */