mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-07-22 22:00:39 -06:00
Reorganize faulting stuff. Differentiate between arch- and OS-specific defines.
- Get rid of ArmMemTools.cpp and rename x64MemTools.cpp to MemTools.cpp. ArmMemTools was almost identical to the POSIX part of x64MemTools, and the two differences, (a) lack of sigaltstack, which I added to the latter recently, and (b) use of r10 to determine the fault address instead of info->si_addr (meaning it only works for specifically formatted JIT code), I don't think are necessary. (Plus Android, see below.) - Rename Core/PowerPC/JitCommon/JitBackpatch.h to Core/MachineContext.h. It doesn't contain anything JIT-specific anymore, and e.g. locking will want to use faulting support regardless of whether any JIT is in use. - Get rid of different definitions of SContext for different architectures under __linux__, since this is POSIX. The exception is of course Android being shitty; I moved the workaround definition from ArmMemTools.cpp to here. - Get rid of #ifdefs around EMM::InstallExceptionHandler and just provide an empty implementation for unsupported systems (i.e. _M_GENERIC really). Added const bool g_exception_handlers_supported for future use; currently exception handlers are only used by the JIT, whose use implies non-M_GENERIC, but locking will change that. - Remove an unnecessary typedef.
This commit is contained in:
comex
211
Source/Core/Core/MachineContext.h
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211
Source/Core/Core/MachineContext.h
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// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#pragma once
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#include "Common/CommonTypes.h"
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// meh.
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#if defined(_M_GENERIC)
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// JitBase uses SContext; it should have no concrete implementations in a
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// generic build.
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struct FakeGenericContext;
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typedef FakeGenericContext SContext;
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#elif defined(_WIN32)
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#include <windows.h>
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typedef CONTEXT SContext;
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#if _M_X86_64
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#define CTX_RAX Rax
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#define CTX_RBX Rbx
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#define CTX_RCX Rcx
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#define CTX_RDX Rdx
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#define CTX_RDI Rdi
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#define CTX_RSI Rsi
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#define CTX_RBP Rbp
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#define CTX_RSP Rsp
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#define CTX_R8 R8
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#define CTX_R9 R9
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#define CTX_R10 R10
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#define CTX_R11 R11
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#define CTX_R12 R12
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#define CTX_R13 R13
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#define CTX_R14 R14
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#define CTX_R15 R15
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#define CTX_RIP Rip
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#else
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#error No context definition for OS
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#endif
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#elif defined(__APPLE__) && !defined(USE_SIGACTION_ON_APPLE)
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// for modules:
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#define _XOPEN_SOURCE
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#include <ucontext.h>
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#include <mach/mach.h>
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#include <mach/message.h>
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#if _M_X86_64
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typedef x86_thread_state64_t SContext;
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#define CTX_RAX __rax
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#define CTX_RBX __rbx
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#define CTX_RCX __rcx
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#define CTX_RDX __rdx
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#define CTX_RDI __rdi
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#define CTX_RSI __rsi
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#define CTX_RBP __rbp
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#define CTX_RSP __rsp
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#define CTX_R8 __r8
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#define CTX_R9 __r9
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#define CTX_R10 __r10
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#define CTX_R11 __r11
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#define CTX_R12 __r12
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#define CTX_R13 __r13
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#define CTX_R14 __r14
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#define CTX_R15 __r15
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#define CTX_RIP __rip
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#else
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#error No context definition for OS
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#endif
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#elif defined(__APPLE__)
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#include <signal.h>
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typedef _STRUCT_MCONTEXT64 SContext;
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#define CTX_RAX __ss.__rax
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#define CTX_RBX __ss.__rbx
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#define CTX_RCX __ss.__rcx
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#define CTX_RDX __ss.__rdx
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#define CTX_RDI __ss.__rdi
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#define CTX_RSI __ss.__rsi
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#define CTX_RBP __ss.__rbp
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#define CTX_RSP __ss.__rsp
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#define CTX_R8 __ss.__r8
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#define CTX_R9 __ss.__r9
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#define CTX_R10 __ss.__r10
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#define CTX_R11 __ss.__r11
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#define CTX_R12 __ss.__r12
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#define CTX_R13 __ss.__r13
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#define CTX_R14 __ss.__r14
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#define CTX_R15 __ss.__r15
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#define CTX_RIP __ss.__rip
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#elif defined(__linux__)
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#include <signal.h>
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#ifdef ANDROID
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#include <asm/sigcontext.h>
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typedef struct sigcontext mcontext_t;
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typedef struct ucontext
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{
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uint32_t uc_flags;
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struct ucontext* uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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// ...
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} ucontext_t;
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#else
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#include <ucontext.h>
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#endif
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typedef mcontext_t SContext;
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#if _M_X86_64
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#define CTX_RAX gregs[REG_RAX]
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#define CTX_RBX gregs[REG_RBX]
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#define CTX_RCX gregs[REG_RCX]
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#define CTX_RDX gregs[REG_RDX]
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#define CTX_RDI gregs[REG_RDI]
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#define CTX_RSI gregs[REG_RSI]
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#define CTX_RBP gregs[REG_RBP]
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#define CTX_RSP gregs[REG_RSP]
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#define CTX_R8 gregs[REG_R8]
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#define CTX_R9 gregs[REG_R9]
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#define CTX_R10 gregs[REG_R10]
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#define CTX_R11 gregs[REG_R11]
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#define CTX_R12 gregs[REG_R12]
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#define CTX_R13 gregs[REG_R13]
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#define CTX_R14 gregs[REG_R14]
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#define CTX_R15 gregs[REG_R15]
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#define CTX_RIP gregs[REG_RIP]
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#elif _M_ARM_64
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#define CTX_REG(x) regs[x]
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#define CTX_SP sp
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#define CTX_PC pc
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#elif _M_ARM_32
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// Add others if required.
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#define CTX_PC arm_pc
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#else
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#warning No context definition for OS
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#endif
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#elif defined(__NetBSD__)
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#include <ucontext.h>
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typedef mcontext_t SContext;
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#if _M_X86_64
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#define CTX_RAX __gregs[_REG_RAX]
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#define CTX_RBX __gregs[_REG_RBX]
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#define CTX_RCX __gregs[_REG_RCX]
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#define CTX_RDX __gregs[_REG_RDX]
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#define CTX_RDI __gregs[_REG_RDI]
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#define CTX_RSI __gregs[_REG_RSI]
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#define CTX_RBP __gregs[_REG_RBP]
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#define CTX_RSP __gregs[_REG_RSP]
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#define CTX_R8 __gregs[_REG_R8]
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#define CTX_R9 __gregs[_REG_R9]
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#define CTX_R10 __gregs[_REG_R10]
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#define CTX_R11 __gregs[_REG_R11]
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#define CTX_R12 __gregs[_REG_R12]
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#define CTX_R13 __gregs[_REG_R13]
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#define CTX_R14 __gregs[_REG_R14]
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#define CTX_R15 __gregs[_REG_R15]
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#define CTX_RIP __gregs[_REG_RIP]
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#else
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#error No context definition for OS
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#endif
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#elif defined(__FreeBSD__)
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#include <ucontext.h>
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typedef mcontext_t SContext;
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#if _M_X86_64
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#define CTX_RAX mc_rax
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#define CTX_RBX mc_rbx
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#define CTX_RCX mc_rcx
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#define CTX_RDX mc_rdx
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#define CTX_RDI mc_rdi
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#define CTX_RSI mc_rsi
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#define CTX_RBP mc_rbp
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#define CTX_RSP mc_rsp
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#define CTX_R8 mc_r8
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#define CTX_R9 mc_r9
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#define CTX_R10 mc_r10
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#define CTX_R11 mc_r11
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#define CTX_R12 mc_r12
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#define CTX_R13 mc_r13
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#define CTX_R14 mc_r14
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#define CTX_R15 mc_r15
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#define CTX_RIP mc_rip
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#else
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#error No context definition for OS
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#endif
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#endif
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#if _M_X86_64
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#include <stddef.h>
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#define CTX_PC CTX_RIP
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static inline u64 *ContextRN(SContext* ctx, int n)
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{
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static const u8 offsets[] =
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{
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offsetof(SContext, CTX_RAX),
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offsetof(SContext, CTX_RCX),
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offsetof(SContext, CTX_RDX),
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offsetof(SContext, CTX_RBX),
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offsetof(SContext, CTX_RSP),
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offsetof(SContext, CTX_RBP),
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offsetof(SContext, CTX_RSI),
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offsetof(SContext, CTX_RDI),
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offsetof(SContext, CTX_R8),
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offsetof(SContext, CTX_R9),
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offsetof(SContext, CTX_R10),
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offsetof(SContext, CTX_R11),
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offsetof(SContext, CTX_R12),
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offsetof(SContext, CTX_R13),
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offsetof(SContext, CTX_R14),
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offsetof(SContext, CTX_R15)
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};
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return (u64 *) ((char *) ctx + offsets[n]);
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}
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#endif
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