gh-mirror/mikepaul-LuaJIT
1
0
Fork 0
mirror of https://github.com/LuaJIT/LuaJIT.git synced 2025-04-22 06:43:27 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

LoongArch64: Add register assignments for the interpreter

Browse Source 
Co-developed-by: Qiqi Huang <huangqiqi@loongson.cn>
This commit is contained in:
Xiaolin Zhao 2022-07-27 15:52:31 +08:00
parent 531fb77725
commit 045d62c170
1 changed files with 74 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
src/vm_loongarch64.dasc Normal file
View File

@ -0,0 +1,74 @@
|// Low-level VM code for LoongArch CPUs.
|// Bytecode interpreter, fast functions and helper functions.
|// Copyright (C) 2005-2022 Mike Pall. See Copyright Notice in luajit.h
|
|.arch loongarch64
|
|//-----------------------------------------------------------------------
|
|// Fixed register assignments for the interpreter.
|// Don't use: r0 = 0, r1 = ra, r2 = tp, r3 = sp, r21 = reserved
|
|
|// The following must be C callee-save (but BASE is often refetched).
|.define BASE, r23 // Base of current Lua stack frame.
|.define KBASE, r24 // Constants of current Lua function.
|.define PC, r25 // Next PC.
|.define DISPATCH, r26 // Opcode dispatch table.
|.define LREG, r27 // Register holding lua_State (also in SAVE_L).
|.define MULTRES, r28 // Size of multi-result: (nresults+1)*8.
|
|.define JGL, r22 // On-trace: global_State + 32768.
|
|// Constants for type-comparisons, stores and conversions. C callee-save.
|.define TISNIL, r22
|.define TISNUM, r29
|.define TOBIT, f30 // 2^52 + 2^51.
|
|// The following temporaries are not saved across C calls, except for RA.
|.define RA, r30 // Callee-save.
|.define RB, r8
|.define RC, r9
|.define RD, r10
|.define INS, r11
|
|.define TMP0, r12
|.define TMP1, r13
|.define TMP2, r14
|.define TMP3, r15
|.define TMP4, r17
|
|// Loongarch lp64 calling convention.
|.define CARG1, r4
|.define CARG2, r5
|.define CARG3, r6
|.define CARG4, r7
|.define CARG5, r8
|.define CARG6, r9
|.define CARG7, r10
|.define CARG8, r11
|
|.define CRET1, r4
|.define CRET2, r5
|
|.define FARG1, f0
|.define FARG2, f1
|.define FARG3, f2
|.define FARG4, f3
|.define FARG5, f4
|.define FARG6, f5
|.define FARG7, f6
|.define FARG8, f7
|
|.define FRET1, f0
|.define FRET2, f1
|
|.define FTMP0, f8
|.define FTMP1, f9
|.define FTMP2, f10
|.define FTMP3, f22
|.define FTMP4, f23
|
|.define FCC0, fcc0
|.define FCC1, fcc1
|