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arm-asm: Add swi

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Danny Milosavljevic 2020-12-26 16:48:47 +01:00
parent b495959e4b
commit c9e0c2a543
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GPG key ID: E71A35542C30BAA5
2 changed files with 22 additions and 0 deletions
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21
arm-asm.c
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@ -171,6 +171,25 @@ static void asm_nullary_opcode(int token)
}
}
static void asm_unary_opcode(TCCState *s1, int token)
{
Operand op;
parse_operand(s1, &op);
switch (ARM_INSTRUCTION_GROUP(token)) {
case TOK_ASM_swieq:
if (op.type != OP_IM8)
expect("immediate 8-bit unsigned integer");
else {
/* Note: Dummy operand (ignored by processor): ARM ref documented 0...255, ARM instruction set documented 24 bit */
asm_emit_opcode(token, (0xf << 24) | op.e.v);
}
break;
default:
expect("unary instruction");
}
}
static void asm_block_data_transfer_opcode(TCCState *s1, int token)
{
uint32_t opcode;
@ -247,6 +266,8 @@ ST_FUNC void asm_opcode(TCCState *s1, int token)
case TOK_ASM_wfeeq:
case TOK_ASM_wfieq:
return asm_nullary_opcode(token);
case TOK_ASM_swieq:
return asm_unary_opcode(s1, token);
default:
expect("known instruction");
}

1
arm-tok.h
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@ -54,6 +54,7 @@
DEF_ASM_CONDED(nop)
DEF_ASM_CONDED(wfe)
DEF_ASM_CONDED(wfi)
DEF_ASM_CONDED(swi)
/* instruction macros */