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py: Implement native multiply operation in viper emitter.

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This commit is contained in:
Damien George
2015-06-04 14:00:29 +00:00
parent 4d9cad180d
commit 567b349c2b
9 changed files with 56 additions and 0 deletions
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12
py/asmarm.c
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@@ -179,6 +179,12 @@ STATIC uint asm_arm_op_sub_reg(uint rd, uint rn, uint rm) {
return 0x0400000 | (rn << 16) | (rd << 12) | rm;
}
STATIC uint asm_arm_op_mul_reg(uint rd, uint rm, uint rs) {
// mul rd, rm, rs
assert(rd != rm);
return 0x0000090 | (rd << 16) | (rs << 8) | rm;
}
STATIC uint asm_arm_op_and_reg(uint rd, uint rn, uint rm) {
// and rd, rn, rm
return 0x0000000 | (rn << 16) | (rd << 12) | rm;
@@ -340,6 +346,12 @@ void asm_arm_sub_reg_reg_reg(asm_arm_t *as, uint rd, uint rn, uint rm) {
emit_al(as, asm_arm_op_sub_reg(rd, rn, rm));
}
void asm_arm_mul_reg_reg_reg(asm_arm_t *as, uint rd, uint rs, uint rm) {
// rs and rm are swapped because of restriction rd!=rm
// mul rd, rm, rs
emit_al(as, asm_arm_op_mul_reg(rd, rm, rs));
}
void asm_arm_and_reg_reg_reg(asm_arm_t *as, uint rd, uint rn, uint rm) {
// and rd, rn, rm
emit_al(as, asm_arm_op_and_reg(rd, rn, rm));