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Allow more registers to be used.

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This commit is contained in:
losfair 2019-02-25 23:55:27 +08:00
parent b18595f2dc
commit 530294922a
1 changed files with 15 additions and 0 deletions
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15
lib/dynasm-backend/src/codegen_x64.rs
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@ -24,6 +24,11 @@ lazy_static! {
let offset = assembler.offset();
dynasm!(
assembler
; push rbx
; push r12
; push r13
; push r14
; push r15
; lea rax, [>after_call]
; push rax
; push rbp
@ -43,6 +48,11 @@ lazy_static! {
; _loop_end:
; jmp rdx
; after_call:
; pop r15
; pop r14
; pop r13
; pop r12
; pop rbx
; ret
);
let buf = assembler.finalize().unwrap();
@ -85,6 +95,11 @@ impl Register {
5 => R9,
6 => R10,
7 => R11,
8 => RBX,
9 => R12,
10 => R13,
11 => R14,
12 => R15,
_ => unreachable!(),
}
}