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More opcodes for codegen v2.

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This commit is contained in:
losfair
2019-04-01 20:33:33 +08:00
parent 6ac81a3c84
commit 6762c2d586
6 changed files with 5853 additions and 5422 deletions
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47
lib/dynasm-backend/src/machine.rs
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@ -25,15 +25,10 @@ impl Machine {
pub fn pick_gpr(&self) -> Option<GPR> {
use GPR::*;
static REGS: &'static [GPR] = &[
RBX,
RSI,
RDI,
R8,
R9,
R10,
R11,
R12,
R13,
];
for r in REGS {
if !self.used_gprs.contains(r) {
@ -52,8 +47,6 @@ impl Machine {
RAX,
RCX,
RDX,
R14,
R15
];
for r in REGS {
if !self.used_gprs.contains(r) {
@ -148,7 +141,9 @@ impl Machine {
ret.push(loc);
}
assembler.emit_sub(Size::S64, Location::Imm32(delta_stack_offset as u32), Location::GPR(GPR::RSP));
if delta_stack_offset != 0 {
assembler.emit_sub(Size::S64, Location::Imm32(delta_stack_offset as u32), Location::GPR(GPR::RSP));
}
if zeroed {
for i in 0..n {
assembler.emit_mov(Size::S64, Location::Imm32(0), ret[i]);
@ -198,7 +193,9 @@ impl Machine {
ret.push(loc);
}
assembler.emit_sub(Size::S64, Location::Imm32(delta_stack_offset as u32), Location::GPR(GPR::RSP));
if delta_stack_offset != 0 {
assembler.emit_sub(Size::S64, Location::Imm32(delta_stack_offset as u32), Location::GPR(GPR::RSP));
}
if zeroed {
for i in 0..tys.len() {
assembler.emit_mov(Size::S64, Location::Imm32(0), ret[i]);
@ -238,6 +235,36 @@ impl Machine {
}
}
assembler.emit_add(Size::S64, Location::Imm32(delta_stack_offset as u32), Location::GPR(GPR::RSP));
if delta_stack_offset != 0 {
assembler.emit_add(Size::S64, Location::Imm32(delta_stack_offset as u32), Location::GPR(GPR::RSP));
}
}
pub fn release_locations_keep_state<E: Emitter>(
&self,
assembler: &mut E,
locs: &[Location]
) {
let mut delta_stack_offset: usize = 0;
for loc in locs {
match *loc {
Location::Memory(GPR::RBP, x) => {
if x >= 0 {
unreachable!();
}
let offset = (-x) as usize;
if offset != self.stack_offset.0 {
unreachable!();
}
delta_stack_offset += 8;
},
_ => {}
}
}
if delta_stack_offset != 0 {
assembler.emit_add(Size::S64, Location::Imm32(delta_stack_offset as u32), Location::GPR(GPR::RSP));
}
}
}