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|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*++
Module Name:
include/pal/context.h
Abstract:
Header file for thread context utility functions.
--*/
#ifndef _PAL_CONTEXT_H_
#define _PAL_CONTEXT_H_
#ifdef __cplusplus
extern "C"
{
#endif // __cplusplus
#include <signal.h>
#include <pthread.h>
#if !HAVE_MACH_EXCEPTIONS
/* A type to wrap the native context type, which is ucontext_t on some
* platforms and another type elsewhere. */
#if HAVE_UCONTEXT_T
#include <ucontext.h>
typedef ucontext_t native_context_t;
#else // HAVE_UCONTEXT_T
#error Native context type is not known on this platform!
#endif // HAVE_UCONTEXT_T
#else // !HAVE_MACH_EXCEPTIONS
#include <mach/kern_return.h>
#include <mach/mach_port.h>
#endif // !HAVE_MACH_EXCEPTIONS else
#if HAVE___GREGSET_T
#ifdef BIT64
#define MCREG_Rbx(mc) ((mc).__gregs[_REG_RBX])
#define MCREG_Rcx(mc) ((mc).__gregs[_REG_RCX])
#define MCREG_Rdx(mc) ((mc).__gregs[_REG_RDX])
#define MCREG_Rsi(mc) ((mc).__gregs[_REG_RSI])
#define MCREG_Rdi(mc) ((mc).__gregs[_REG_RDI])
#define MCREG_Rbp(mc) ((mc).__gregs[_REG_RBP])
#define MCREG_Rax(mc) ((mc).__gregs[_REG_RAX])
#define MCREG_Rip(mc) ((mc).__gregs[_REG_RIP])
#define MCREG_Rsp(mc) ((mc).__gregs[_REG_RSP])
#define MCREG_SegCs(mc) ((mc).__gregs[_REG_CS])
#define MCREG_SegSs(mc) ((mc).__gregs[_REG_SS])
#define MCREG_R8(mc) ((mc).__gregs[_REG_R8])
#define MCREG_R9(mc) ((mc).__gregs[_REG_R9])
#define MCREG_R10(mc) ((mc).__gregs[_REG_R10])
#define MCREG_R11(mc) ((mc).__gregs[_REG_R11])
#define MCREG_R12(mc) ((mc).__gregs[_REG_R12])
#define MCREG_R13(mc) ((mc).__gregs[_REG_R13])
#define MCREG_R14(mc) ((mc).__gregs[_REG_R14])
#define MCREG_R15(mc) ((mc).__gregs[_REG_R15])
#define MCREG_EFlags(mc) ((mc).__gregs[_REG_RFLAGS])
#define FPREG_Xmm(uc, index) *(M128A*)&(((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_xmm[index])
#define FPREG_St(uc, index) *(M128A*)&(((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_87_ac[index])
#define FPREG_ControlWord(uc) (((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_cw)
#define FPREG_StatusWord(uc) (((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_sw)
#define FPREG_TagWord(uc) (((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_tw)
#define FPREG_ErrorOffset(uc) (*(DWORD*) &(((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_ip))
#define FPREG_ErrorSelector(uc) *((WORD*) &(((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_ip) + 2)
#define FPREG_DataOffset(uc) (*(DWORD*) &(((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_dp))
#define FPREG_DataSelector(uc) *((WORD*) &(((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_dp) + 2)
#define FPREG_MxCsr(uc) (((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_mxcsr)
#define FPREG_MxCsr_Mask(uc) (((struct fxsave*)(&(uc)->uc_mcontext.__fpregs))->fx_mxcsr_mask)
#else // BIT64
#define MCREG_Ebx(mc) ((mc).__gregs[_REG_EBX])
#define MCREG_Ecx(mc) ((mc).__gregs[_REG_ECX])
#define MCREG_Edx(mc) ((mc).__gregs[_REG_EDX])
#define MCREG_Esi(mc) ((mc).__gregs[_REG_ESI])
#define MCREG_Edi(mc) ((mc).__gregs[_REG_EDI])
#define MCREG_Ebp(mc) ((mc).__gregs[_REG_EBP])
#define MCREG_Eax(mc) ((mc).__gregs[_REG_EAX])
#define MCREG_Eip(mc) ((mc).__gregs[_REG_EIP])
#define MCREG_Esp(mc) ((mc).__gregs[_REG_ESP])
#define MCREG_SegCs(mc) ((mc).__gregs[_REG_CS])
#define MCREG_SegSs(mc) ((mc).__gregs[_REG_SS])
#define MCREG_EFlags(mc) ((mc).__gregs[_REG_RFLAGS])
#endif // BIT64
#elif HAVE_GREGSET_T
#ifdef BIT64
#define MCREG_Rbx(mc) ((mc).gregs[REG_RBX])
#define MCREG_Rcx(mc) ((mc).gregs[REG_RCX])
#define MCREG_Rdx(mc) ((mc).gregs[REG_RDX])
#define MCREG_Rsi(mc) ((mc).gregs[REG_RSI])
#define MCREG_Rdi(mc) ((mc).gregs[REG_RDI])
#define MCREG_Rbp(mc) ((mc).gregs[REG_RBP])
#define MCREG_Rax(mc) ((mc).gregs[REG_RAX])
#define MCREG_Rip(mc) ((mc).gregs[REG_RIP])
#define MCREG_Rsp(mc) ((mc).gregs[REG_RSP])
#define MCREG_SegCs(mc) (*(WORD*)&((mc).gregs[REG_CSGSFS]))
#define MCREG_R8(mc) ((mc).gregs[REG_R8])
#define MCREG_R9(mc) ((mc).gregs[REG_R9])
#define MCREG_R10(mc) ((mc).gregs[REG_R10])
#define MCREG_R11(mc) ((mc).gregs[REG_R11])
#define MCREG_R12(mc) ((mc).gregs[REG_R12])
#define MCREG_R13(mc) ((mc).gregs[REG_R13])
#define MCREG_R14(mc) ((mc).gregs[REG_R14])
#define MCREG_R15(mc) ((mc).gregs[REG_R15])
#define FPREG_Fpstate(uc) ((uc)->uc_mcontext.fpregs)
#define FPREG_Xmm(uc, index) *(M128A*)&(FPREG_Fpstate(uc)->_xmm[index])
#define FPREG_St(uc, index) *(M128A*)&(FPREG_Fpstate(uc)->_st[index])
#define FPREG_ControlWord(uc) (FPREG_Fpstate(uc)->cwd)
#define FPREG_StatusWord(uc) (FPREG_Fpstate(uc)->swd)
#define FPREG_TagWord(uc) (FPREG_Fpstate(uc)->ftw)
#define FPREG_ErrorOffset(uc) *(DWORD*)&(FPREG_Fpstate(uc)->rip)
#define FPREG_ErrorSelector(uc) *(((WORD*)&(FPREG_Fpstate(uc)->rip)) + 2)
#define FPREG_DataOffset(uc) *(DWORD*)&(FPREG_Fpstate(uc)->rdp)
#define FPREG_DataSelector(uc) *(((WORD*)&(FPREG_Fpstate(uc)->rdp)) + 2)
#define FPREG_MxCsr(uc) (FPREG_Fpstate(uc)->mxcsr)
#define FPREG_MxCsr_Mask(uc) (FPREG_Fpstate(uc)->mxcr_mask)
/////////////////////
// Extended state
#ifdef XSTATE_SUPPORTED
inline _fpx_sw_bytes *FPREG_FpxSwBytes(const ucontext_t *uc)
{
// Bytes 464..511 in the FXSAVE format are available for software to use for any purpose. In this case, they are used to
// indicate information about extended state.
_ASSERTE(reinterpret_cast<UINT8 *>(&FPREG_Fpstate(uc)->padding[12]) - reinterpret_cast<UINT8 *>(FPREG_Fpstate(uc)) == 464);
_ASSERTE(FPREG_Fpstate(uc) != nullptr);
return reinterpret_cast<_fpx_sw_bytes *>(&FPREG_Fpstate(uc)->padding[12]);
}
inline UINT32 FPREG_ExtendedSize(const ucontext_t *uc)
{
_ASSERTE(FPREG_FpxSwBytes(uc)->magic1 == FP_XSTATE_MAGIC1);
return FPREG_FpxSwBytes(uc)->extended_size;
}
inline bool FPREG_HasExtendedState(const ucontext_t *uc)
{
// See comments in /usr/include/x86_64-linux-gnu/asm/sigcontext.h for info on how to detect if extended state is present
static_assert_no_msg(FP_XSTATE_MAGIC2_SIZE == sizeof(UINT32));
if (FPREG_FpxSwBytes(uc)->magic1 != FP_XSTATE_MAGIC1)
{
return false;
}
UINT32 extendedSize = FPREG_ExtendedSize(uc);
if (extendedSize < sizeof(_xstate))
{
return false;
}
_ASSERTE(extendedSize >= FP_XSTATE_MAGIC2_SIZE);
return *reinterpret_cast<UINT32 *>(reinterpret_cast<UINT8 *>(FPREG_Fpstate(uc)) + (extendedSize - FP_XSTATE_MAGIC2_SIZE))
== FP_XSTATE_MAGIC2;
}
inline void *FPREG_Xstate_Ymmh(const ucontext_t *uc)
{
static_assert_no_msg(sizeof(reinterpret_cast<_xstate *>(FPREG_Fpstate(uc))->ymmh.ymmh_space) == 16 * 16);
_ASSERTE(FPREG_HasExtendedState(uc));
return reinterpret_cast<_xstate *>(FPREG_Fpstate(uc))->ymmh.ymmh_space;
}
#endif // XSTATE_SUPPORTED
/////////////////////
#else // BIT64
#define MCREG_Ebx(mc) ((mc).gregs[REG_EBX])
#define MCREG_Ecx(mc) ((mc).gregs[REG_ECX])
#define MCREG_Edx(mc) ((mc).gregs[REG_EDX])
#define MCREG_Esi(mc) ((mc).gregs[REG_ESI])
#define MCREG_Edi(mc) ((mc).gregs[REG_EDI])
#define MCREG_Ebp(mc) ((mc).gregs[REG_EBP])
#define MCREG_Eax(mc) ((mc).gregs[REG_EAX])
#define MCREG_Eip(mc) ((mc).gregs[REG_EIP])
#define MCREG_Esp(mc) ((mc).gregs[REG_ESP])
#define MCREG_SegCs(mc) ((mc).gregs[REG_CS])
#define MCREG_SegSs(mc) ((mc).gregs[REG_SS])
#endif // BIT64
#define MCREG_EFlags(mc) ((mc).gregs[REG_EFL])
#else // HAVE_GREGSET_T
#ifdef BIT64
#if defined(_ARM64_)
#define MCREG_X0(mc) ((mc).regs[0])
#define MCREG_X1(mc) ((mc).regs[1])
#define MCREG_X2(mc) ((mc).regs[2])
#define MCREG_X3(mc) ((mc).regs[3])
#define MCREG_X4(mc) ((mc).regs[4])
#define MCREG_X5(mc) ((mc).regs[5])
#define MCREG_X6(mc) ((mc).regs[6])
#define MCREG_X7(mc) ((mc).regs[7])
#define MCREG_X8(mc) ((mc).regs[8])
#define MCREG_X9(mc) ((mc).regs[9])
#define MCREG_X10(mc) ((mc).regs[10])
#define MCREG_X11(mc) ((mc).regs[11])
#define MCREG_X12(mc) ((mc).regs[12])
#define MCREG_X13(mc) ((mc).regs[13])
#define MCREG_X14(mc) ((mc).regs[14])
#define MCREG_X15(mc) ((mc).regs[15])
#define MCREG_X16(mc) ((mc).regs[16])
#define MCREG_X17(mc) ((mc).regs[17])
#define MCREG_X18(mc) ((mc).regs[18])
#define MCREG_X19(mc) ((mc).regs[19])
#define MCREG_X20(mc) ((mc).regs[20])
#define MCREG_X21(mc) ((mc).regs[21])
#define MCREG_X22(mc) ((mc).regs[22])
#define MCREG_X23(mc) ((mc).regs[23])
#define MCREG_X24(mc) ((mc).regs[24])
#define MCREG_X25(mc) ((mc).regs[25])
#define MCREG_X26(mc) ((mc).regs[26])
#define MCREG_X27(mc) ((mc).regs[27])
#define MCREG_X28(mc) ((mc).regs[28])
#define MCREG_Fp(mc) ((mc).regs[29])
#define MCREG_Lr(mc) ((mc).regs[30])
#define MCREG_Sp(mc) ((mc).sp)
#define MCREG_Pc(mc) ((mc).pc)
#define MCREG_Cpsr(mc) ((mc).pstate)
#else
// For FreeBSD, as found in x86/ucontext.h
#define MCREG_Rbp(mc) ((mc).mc_rbp)
#define MCREG_Rip(mc) ((mc).mc_rip)
#define MCREG_Rsp(mc) ((mc).mc_rsp)
#define MCREG_Rsi(mc) ((mc).mc_rsi)
#define MCREG_Rdi(mc) ((mc).mc_rdi)
#define MCREG_Rbx(mc) ((mc).mc_rbx)
#define MCREG_Rdx(mc) ((mc).mc_rdx)
#define MCREG_Rcx(mc) ((mc).mc_rcx)
#define MCREG_Rax(mc) ((mc).mc_rax)
#define MCREG_R8(mc) ((mc).mc_r8)
#define MCREG_R9(mc) ((mc).mc_r9)
#define MCREG_R10(mc) ((mc).mc_r10)
#define MCREG_R11(mc) ((mc).mc_r11)
#define MCREG_R12(mc) ((mc).mc_r12)
#define MCREG_R13(mc) ((mc).mc_r13)
#define MCREG_R14(mc) ((mc).mc_r14)
#define MCREG_R15(mc) ((mc).mc_r15)
#define MCREG_EFlags(mc) ((mc).mc_rflags)
#define MCREG_SegCs(mc) ((mc).mc_cs)
// from x86/fpu.h: struct __envxmm64
#define FPSTATE(uc) ((savefpu*)((uc)->uc_mcontext.mc_fpstate))
#define FPREG_ControlWord(uc) FPSTATE(uc)->sv_env.en_cw
#define FPREG_StatusWord(uc) FPSTATE(uc)->sv_env.en_sw
#define FPREG_TagWord(uc) FPSTATE(uc)->sv_env.en_tw
#define FPREG_MxCsr(uc) FPSTATE(uc)->sv_env.en_mxcsr
#define FPREG_MxCsr_Mask(uc) FPSTATE(uc)->sv_env.en_mxcsr_mask
#define FPREG_ErrorOffset(uc) *(DWORD*) &(FPSTATE(uc)->sv_env.en_rip)
#define FPREG_ErrorSelector(uc) *((WORD*) &(FPSTATE(uc)->sv_env.en_rip) + 2)
#define FPREG_DataOffset(uc) *(DWORD*) &(FPSTATE(uc)->sv_env.en_rdp)
#define FPREG_DataSelector(uc) *((WORD*) &(FPSTATE(uc)->sv_env.en_rdp) + 2)
#define FPREG_Xmm(uc, index) *(M128A*) &(FPSTATE(uc)->sv_xmm[index])
#define FPREG_St(uc, index) *(M128A*) &(FPSTATE(uc)->sv_fp[index].fp_acc)
#endif
#else // BIT64
#if defined(_ARM_)
#define MCREG_R0(mc) ((mc).arm_r0)
#define MCREG_R1(mc) ((mc).arm_r1)
#define MCREG_R2(mc) ((mc).arm_r2)
#define MCREG_R3(mc) ((mc).arm_r3)
#define MCREG_R4(mc) ((mc).arm_r4)
#define MCREG_R5(mc) ((mc).arm_r5)
#define MCREG_R6(mc) ((mc).arm_r6)
#define MCREG_R7(mc) ((mc).arm_r7)
#define MCREG_R8(mc) ((mc).arm_r8)
#define MCREG_R9(mc) ((mc).arm_r9)
#define MCREG_R10(mc) ((mc).arm_r10)
#define MCREG_R11(mc) ((mc).arm_fp)
#define MCREG_R12(mc) ((mc).arm_ip)
#define MCREG_Sp(mc) ((mc).arm_sp)
#define MCREG_Lr(mc) ((mc).arm_lr)
#define MCREG_Pc(mc) ((mc).arm_pc)
#define MCREG_Cpsr(mc) ((mc).arm_cpsr)
#elif defined(_X86_)
#define MCREG_Ebx(mc) ((mc).mc_ebx)
#define MCREG_Ecx(mc) ((mc).mc_ecx)
#define MCREG_Edx(mc) ((mc).mc_edx)
#define MCREG_Esi(mc) ((mc).mc_esi)
#define MCREG_Edi(mc) ((mc).mc_edi)
#define MCREG_Ebp(mc) ((mc).mc_ebp)
#define MCREG_Eax(mc) ((mc).mc_eax)
#define MCREG_Eip(mc) ((mc).mc_eip)
#define MCREG_SegCs(mc) ((mc).mc_cs)
#define MCREG_EFlags(mc) ((mc).mc_eflags)
#define MCREG_Esp(mc) ((mc).mc_esp)
#define MCREG_SegSs(mc) ((mc).mc_ss)
#else
#error "Unsupported arch"
#endif
#endif // BIT64
#endif // HAVE_GREGSET_T
#if HAVE_PT_REGS
#ifdef BIT64
#define PTREG_Rbx(ptreg) ((ptreg).rbx)
#define PTREG_Rcx(ptreg) ((ptreg).rcx)
#define PTREG_Rdx(ptreg) ((ptreg).rdx)
#define PTREG_Rsi(ptreg) ((ptreg).rsi)
#define PTREG_Rdi(ptreg) ((ptreg).rdi)
#define PTREG_Rbp(ptreg) ((ptreg).rbp)
#define PTREG_Rax(ptreg) ((ptreg).rax)
#define PTREG_Rip(ptreg) ((ptreg).rip)
#define PTREG_SegCs(ptreg) ((ptreg).cs)
#define PTREG_SegSs(ptreg) ((ptreg).ss)
#define PTREG_Rsp(ptreg) ((ptreg).rsp)
#define PTREG_R8(ptreg) ((ptreg).r8)
#define PTREG_R9(ptreg) ((ptreg).r9)
#define PTREG_R10(ptreg) ((ptreg).r10)
#define PTREG_R11(ptreg) ((ptreg).r11)
#define PTREG_R12(ptreg) ((ptreg).r12)
#define PTREG_R13(ptreg) ((ptreg).r13)
#define PTREG_R14(ptreg) ((ptreg).r14)
#define PTREG_R15(ptreg) ((ptreg).r15)
#else // BIT64
#if defined(_ARM_)
#define PTREG_R0(ptreg) ((ptreg).uregs[0])
#define PTREG_R1(ptreg) ((ptreg).uregs[1])
#define PTREG_R2(ptreg) ((ptreg).uregs[2])
#define PTREG_R3(ptreg) ((ptreg).uregs[3])
#define PTREG_R4(ptreg) ((ptreg).uregs[4])
#define PTREG_R5(ptreg) ((ptreg).uregs[5])
#define PTREG_R6(ptreg) ((ptreg).uregs[6])
#define PTREG_R7(ptreg) ((ptreg).uregs[7])
#define PTREG_R8(ptreg) ((ptreg).uregs[8])
#define PTREG_R9(ptreg) ((ptreg).uregs[9])
#define PTREG_R10(ptreg) ((ptreg).uregs[10])
#define PTREG_R11(ptreg) ((ptreg).uregs[11])
#define PTREG_R12(ptreg) ((ptreg).uregs[12])
#define PTREG_Sp(ptreg) ((ptreg).uregs[13])
#define PTREG_Lr(ptreg) ((ptreg).uregs[14])
#define PTREG_Pc(ptreg) ((ptreg).uregs[15])
#define PTREG_Cpsr(ptreg) ((ptreg).uregs[16])
#elif defined(_X86_)
#define PTREG_Ebx(ptreg) ((ptreg).ebx)
#define PTREG_Ecx(ptreg) ((ptreg).ecx)
#define PTREG_Edx(ptreg) ((ptreg).edx)
#define PTREG_Esi(ptreg) ((ptreg).esi)
#define PTREG_Edi(ptreg) ((ptreg).edi)
#define PTREG_Ebp(ptreg) ((ptreg).ebp)
#define PTREG_Eax(ptreg) ((ptreg).eax)
#define PTREG_Eip(ptreg) ((ptreg).eip)
#define PTREG_SegCs(ptreg) ((ptreg).xcs)
#define PTREG_SegSs(ptreg) ((ptreg).xss)
#define PTREG_Esp(ptreg) ((ptreg).esp)
#else
#error "Unsupported arch"
#endif
#endif // BIT64
#define PTREG_EFlags(ptreg) ((ptreg).eflags)
#endif // HAVE_PT_REGS
#if HAVE_BSD_REGS_T
#ifndef BSD_REGS_STYLE
#error "struct reg" has unrecognized format
#endif
#ifdef BIT64
#define BSDREG_Rbx(reg) BSD_REGS_STYLE(reg,RBX,rbx)
#define BSDREG_Rcx(reg) BSD_REGS_STYLE(reg,RCX,rcx)
#define BSDREG_Rdx(reg) BSD_REGS_STYLE(reg,RDX,rdx)
#define BSDREG_Rsi(reg) BSD_REGS_STYLE(reg,RSI,rsi)
#define BSDREG_Rdi(reg) BSD_REGS_STYLE(reg,RDI,rdi)
#define BSDREG_Rbp(reg) BSD_REGS_STYLE(reg,RBP,rbp)
#define BSDREG_Rax(reg) BSD_REGS_STYLE(reg,RAX,rax)
#define BSDREG_Rip(reg) BSD_REGS_STYLE(reg,RIP,rip)
#define BSDREG_SegCs(reg) BSD_REGS_STYLE(reg,CS,cs)
#define BSDREG_SegSs(reg) BSD_REGS_STYLE(reg,SS,ss)
#define BSDREG_Rsp(reg) BSD_REGS_STYLE(reg,RSP,rsp)
#define BSDREG_R8(reg) BSD_REGS_STYLE(reg,R8,r8)
#define BSDREG_R9(reg) BSD_REGS_STYLE(reg,R9,r9)
#define BSDREG_R10(reg) BSD_REGS_STYLE(reg,R10,r10)
#define BSDREG_R11(reg) BSD_REGS_STYLE(reg,R11,r11)
#define BSDREG_R12(reg) BSD_REGS_STYLE(reg,R12,r12)
#define BSDREG_R13(reg) BSD_REGS_STYLE(reg,R13,r13)
#define BSDREG_R14(reg) BSD_REGS_STYLE(reg,R14,r14)
#define BSDREG_R15(reg) BSD_REGS_STYLE(reg,R15,r15)
#define BSDREG_EFlags(reg) BSD_REGS_STYLE(reg,RFLAGS,rflags)
#else // BIT64
#define BSDREG_Ebx(reg) BSD_REGS_STYLE(reg,EBX,ebx)
#define BSDREG_Ecx(reg) BSD_REGS_STYLE(reg,ECX,ecx)
#define BSDREG_Edx(reg) BSD_REGS_STYLE(reg,EDX,edx)
#define BSDREG_Esi(reg) BSD_REGS_STYLE(reg,ESI,esi)
#define BSDREG_Edi(reg) BSD_REGS_STYLE(reg,EDI,edi)
#define BSDREG_Ebp(reg) BSD_REGS_STYLE(reg,EDP,ebp)
#define BSDREG_Eax(reg) BSD_REGS_STYLE(reg,EAX,eax)
#define BSDREG_Eip(reg) BSD_REGS_STYLE(reg,EIP,eip)
#define BSDREG_SegCs(reg) BSD_REGS_STYLE(reg,CS,cs)
#define BSDREG_EFlags(reg) BSD_REGS_STYLE(reg,EFLAGS,eflags)
#define BSDREG_Esp(reg) BSD_REGS_STYLE(reg,ESP,esp)
#define BSDREG_SegSs(reg) BSD_REGS_STYLE(reg,SS,ss)
#endif // BIT64
#endif // HAVE_BSD_REGS_T
inline static DWORD64 CONTEXTGetPC(LPCONTEXT pContext)
{
#if defined(_AMD64_)
return pContext->Rip;
#elif defined(_X86_)
return pContext->Eip;
#elif defined(_ARM64_) || defined(_ARM_)
return pContext->Pc;
#else
#error don't know how to get the program counter for this architecture
#endif
}
inline static void CONTEXTSetPC(LPCONTEXT pContext, DWORD64 pc)
{
#if defined(_AMD64_)
pContext->Rip = pc;
#elif defined(_X86_)
pContext->Eip = pc;
#elif defined(_ARM64_) || defined(_ARM_)
pContext->Pc = pc;
#else
#error don't know how to set the program counter for this architecture
#endif
}
inline static DWORD64 CONTEXTGetFP(LPCONTEXT pContext)
{
#if defined(_AMD64_)
return pContext->Rbp;
#elif defined(_X86_)
return pContext->Ebp;
#elif defined(_ARM_)
return pContext->R7;
#elif defined(_ARM64_)
return pContext->Fp;
#else
#error don't know how to get the frame pointer for this architecture
#endif
}
/*++
Function :
CONTEXT_CaptureContext
Captures the context of the caller.
The returned context is suitable for performing
a virtual unwind.
Parameters :
LPCONTEXT lpContext : new context
--*/
void
PALAPI
CONTEXT_CaptureContext(
LPCONTEXT lpContext
);
/*++
Function :
CONTEXT_SetThreadContext
Processor-dependent implementation of SetThreadContext
Parameters :
HANDLE hThread : thread whose context is to be set
CONTEXT *lpContext : new context
Return value :
TRUE on success, FALSE on failure
--*/
BOOL
CONTEXT_SetThreadContext(
DWORD dwProcessId,
pthread_t self,
CONST CONTEXT *lpContext
);
/*++
Function :
CONTEXT_GetThreadContext
Processor-dependent implementation of GetThreadContext
Parameters :
HANDLE hThread : thread whose context is to retrieved
LPCONTEXT lpContext : destination for thread's context
Return value :
TRUE on success, FALSE on failure
--*/
BOOL
CONTEXT_GetThreadContext(
DWORD dwProcessId,
pthread_t self,
LPCONTEXT lpContext);
#if HAVE_MACH_EXCEPTIONS
/*++
Function:
CONTEXT_GetThreadContextFromPort
Helper for GetThreadContext that uses a mach_port
--*/
kern_return_t
CONTEXT_GetThreadContextFromPort(
mach_port_t Port,
LPCONTEXT lpContext);
/*++
Function:
SetThreadContextOnPort
Helper for CONTEXT_SetThreadContext
--*/
kern_return_t
CONTEXT_SetThreadContextOnPort(
mach_port_t Port,
IN CONST CONTEXT *lpContext);
/*++
Function:
GetThreadContextFromThreadState
Helper for mach exception support
--*/
void
CONTEXT_GetThreadContextFromThreadState(
thread_state_flavor_t stateFlavor,
thread_state_t threadState,
LPCONTEXT lpContext);
#else // HAVE_MACH_EXCEPTIONS
/*++
Function :
CONTEXTToNativeContext
Converts a CONTEXT record to a native context.
Parameters :
CONST CONTEXT *lpContext : CONTEXT to convert, including
flags that determine which registers are valid in
lpContext and which ones to set in native
native_context_t *native : native context to fill in
Return value :
None
--*/
void CONTEXTToNativeContext(CONST CONTEXT *lpContext, native_context_t *native);
/*++
Function :
CONTEXTFromNativeContext
Converts a native context to a CONTEXT record.
Parameters :
const native_context_t *native : native context to convert
LPCONTEXT lpContext : CONTEXT to fill in
ULONG contextFlags : flags that determine which registers are valid in
native and which ones to set in lpContext
Return value :
None
--*/
void CONTEXTFromNativeContext(const native_context_t *native, LPCONTEXT lpContext,
ULONG contextFlags);
/*++
Function :
GetNativeContextPC
Returns the program counter from the native context.
Parameters :
const native_context_t *context : native context
Return value :
The program counter from the native context.
--*/
LPVOID GetNativeContextPC(const native_context_t *context);
/*++
Function :
GetNativeContextSP
Returns the stack pointer from the native context.
Parameters :
const native_context_t *native : native context
Return value :
The stack pointer from the native context.
--*/
LPVOID GetNativeContextSP(const native_context_t *context);
/*++
Function :
CONTEXTGetExceptionCodeForSignal
Translates signal and context information to a Win32 exception code.
Parameters :
const siginfo_t *siginfo : signal information from a signal handler
const native_context_t *context : context information
Return value :
The Win32 exception code that corresponds to the signal and context
information.
--*/
DWORD CONTEXTGetExceptionCodeForSignal(const siginfo_t *siginfo,
const native_context_t *context);
#endif // HAVE_MACH_EXCEPTIONS else
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // _PAL_CONTEXT_H_
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