diff options
Diffstat (limited to 'src/common/x64/abi.h')
| -rw-r--r-- | src/common/x64/abi.h | 61 |
1 files changed, 21 insertions, 40 deletions
diff --git a/src/common/x64/abi.h b/src/common/x64/abi.h index 7e9c156ae..de6d62fdd 100644 --- a/src/common/x64/abi.h +++ b/src/common/x64/abi.h @@ -1,35 +1,15 @@ -// Copyright (C) 2003 Dolphin Project. - -// This program is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, version 2.0 or later versions. - -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License 2.0 for more details. - -// A copy of the GPL 2.0 should have been included with the program. -// If not, see http://www.gnu.org/licenses/ - -// Official SVN repository and contact information can be found at -// http://code.google.com/p/dolphin-emu/ +// Copyright 2008 Dolphin Emulator Project +// Licensed under GPLv2+ +// Refer to the license.txt file included. #pragma once -#include "common/common_types.h" +#include "common/bit_set.h" +#include "emitter.h" -// x86/x64 ABI:s, and helpers to help follow them when JIT-ing code. +// x64 ABI:s, and helpers to help follow them when JIT-ing code. // All convensions return values in EAX (+ possibly EDX). -// Linux 32-bit, Windows 32-bit (cdecl, System V): -// * Caller pushes left to right -// * Caller fixes stack after call -// * function subtract from stack for local storage only. -// Scratch: EAX ECX EDX -// Callee-save: EBX ESI EDI EBP -// Parameters: - - // Windows 64-bit // * 4-reg "fastcall" variant, very new-skool stack handling // * Callee moves stack pointer, to make room for shadow regs for the biggest function _it itself calls_ @@ -44,18 +24,8 @@ // Callee-save: RBX RBP R12 R13 R14 R15 // Parameters: RDI RSI RDX RCX R8 R9 -#ifdef _M_IX86 // 32 bit calling convention, shared by all - -// 32-bit don't pass parameters in regs, but these are convenient to have anyway when we have to -// choose regs to put stuff in. -#define ABI_PARAM1 RCX -#define ABI_PARAM2 RDX - -// There are no ABI_PARAM* here, since args are pushed. -// 32-bit bog standard cdecl, shared between linux and windows -// MacOSX 32-bit is same as System V with a few exceptions that we probably don't care much about. - -#elif ARCHITECTURE_x86_64 // 64 bit calling convention +#define ABI_ALL_FPRS BitSet32(0xffff0000) +#define ABI_ALL_GPRS BitSet32(0x0000ffff) #ifdef _WIN32 // 64-bit Windows - the really exotic calling convention @@ -64,7 +34,11 @@ #define ABI_PARAM3 R8 #define ABI_PARAM4 R9 -#else //64-bit Unix (hopefully MacOSX too) +// xmm0-xmm15 use the upper 16 bits in the functions that push/pop registers. +#define ABI_ALL_CALLER_SAVED \ + (BitSet32 { RAX, RCX, RDX, R8, R9, R10, R11, \ + XMM0+16, XMM1+16, XMM2+16, XMM3+16, XMM4+16, XMM5+16 }) +#else //64-bit Unix / OS X #define ABI_PARAM1 RDI #define ABI_PARAM2 RSI @@ -73,6 +47,13 @@ #define ABI_PARAM5 R8 #define ABI_PARAM6 R9 +// TODO: Avoid pushing all 16 XMM registers when possible. Most functions we call probably +// don't actually clobber them. +#define ABI_ALL_CALLER_SAVED \ + (BitSet32 { RAX, RCX, RDX, RDI, RSI, R8, R9, R10, R11 } | \ + ABI_ALL_FPRS) #endif // WIN32 -#endif // X86 +#define ABI_ALL_CALLEE_SAVED (~ABI_ALL_CALLER_SAVED) + +#define ABI_RETURN RAX |