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linux/context: Add updated context files

This commit is contained in:
Stefanos Kornilios Mitsis Poiitidis 2015-05-16 07:16:46 +02:00
parent 65ca1382d8
commit 03914309e3
2 changed files with 39 additions and 11 deletions
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48
core/linux/context.cpp
View File

@ -1,15 +1,20 @@
#include "context.h"
#if defined(_ANDROID)
#include <asm/sigcontext.h>
#include <asm/sigcontext.h>
#else
#include <ucontext.h>
#if HOST_OS == OS_DARWIN
#define _XOPEN_SOURCE 1
#define __USE_GNU 1
#endif
#include <ucontext.h>
#endif
//////
#define MCTX(p) (((ucontext_t *)(segfault_ctx))->uc_mcontext.p)
#define MCTX(p) (((ucontext_t *)(segfault_ctx))->uc_mcontext p)
template <typename Ta, typename Tb>
void swap(Ta& a, Tb& b, bool reverse) {
if (reverse) {
@ -23,16 +28,39 @@ void swap(Ta& a, Tb& b, bool reverse) {
void context_segfault(rei_host_context_t* reictx, void* segfault_ctx, bool to_segfault) {
#if HOST_CPU == CPU_ARM
swap(reictx->pc, MCTX(arm_pc), to_segfault);
#if HOST_OS == OS_LINUX
swap(reictx->pc, MCTX(.arm_pc), to_segfault);
u32* r =(u32*) &MCTX(.arm_r0);
for (int i = 0; i < 15; i++)
swap(reictx->r[i], r[i], to_segfault);
#elif HOST_OS == OS_DARWIN
swap(reictx->pc, MCTX(->__ss.__pc), to_segfault);
for (int i = 0; i < 15; i++)
swap(reictx->r[i], MCTX(->__ss.__r[i]), to_segfault);
#else
#error HOST_OS
#endif
#elif HOST_CPU == CPU_X86
swap(reictx->pc, MCTX(gregs[REG_EIP]), to_segfault);
swap(reictx->esp, MCTX(gregs[REG_ESP]), to_segfault);
swap(reictx->eax, MCTX(gregs[REG_EAX]), to_segfault);
swap(reictx->ecx, MCTX(gregs[REG_ECX]), to_segfault);
#if HOST_OS == OS_LINUX
swap(reictx->pc, MCTX(.gregs[REG_EIP]), to_segfault);
swap(reictx->esp, MCTX(.gregs[REG_ESP]), to_segfault);
swap(reictx->eax, MCTX(.gregs[REG_EAX]), to_segfault);
swap(reictx->ecx, MCTX(.gregs[REG_ECX]), to_segfault);
#elif HOST_OS == OS_DARWIN
swap(reictx->pc, MCTX(->__ss.__eip), to_segfault);
swap(reictx->esp, MCTX(->__ss.__esp), to_segfault);
swap(reictx->eax, MCTX(->__ss.__eax), to_segfault);
swap(reictx->ecx, MCTX(->__ss.__ecx), to_segfault);
#else
#error HOST_OS
#endif
#elif HOST_CPU == CPU_MIPS
swap(reictx->pc, MCTX(pc), to_segfault);
swap(reictx->pc, MCTX(.pc), to_segfault);
#else
#error Unsupported HOST_CPU
#error Unsupported HOST_CPU
#endif
}

2
core/linux/context.h
View File

@ -9,7 +9,7 @@ struct rei_host_context_t {
u32 ecx;
u32 esp;
#elif HOST_CPU == CPU_ARM
u32 r0;
u32 r[15];
#endif
};