| /* |
| * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) |
| * Licensed under the GPL |
| */ |
| |
| #ifndef __SYSDEP_I386_PTRACE_H |
| #define __SYSDEP_I386_PTRACE_H |
| |
| #include "uml-config.h" |
| #include "user_constants.h" |
| #include "sysdep/faultinfo.h" |
| #include "choose-mode.h" |
| |
| #define MAX_REG_NR (UM_FRAME_SIZE / sizeof(unsigned long)) |
| #define MAX_REG_OFFSET (UM_FRAME_SIZE) |
| |
| #ifdef UML_CONFIG_PT_PROXY |
| extern void update_debugregs(int seq); |
| #else |
| static inline void update_debugregs(int seq) {} |
| #endif |
| |
| |
| /* syscall emulation path in ptrace */ |
| |
| #ifndef PTRACE_SYSEMU |
| #define PTRACE_SYSEMU 31 |
| #endif |
| |
| void set_using_sysemu(int value); |
| int get_using_sysemu(void); |
| extern int sysemu_supported; |
| |
| #ifdef UML_CONFIG_MODE_TT |
| #include "sysdep/sc.h" |
| #endif |
| |
| #ifdef UML_CONFIG_MODE_SKAS |
| |
| #include "skas_ptregs.h" |
| |
| #define REGS_IP(r) ((r)[HOST_IP]) |
| #define REGS_SP(r) ((r)[HOST_SP]) |
| #define REGS_EFLAGS(r) ((r)[HOST_EFLAGS]) |
| #define REGS_EAX(r) ((r)[HOST_EAX]) |
| #define REGS_EBX(r) ((r)[HOST_EBX]) |
| #define REGS_ECX(r) ((r)[HOST_ECX]) |
| #define REGS_EDX(r) ((r)[HOST_EDX]) |
| #define REGS_ESI(r) ((r)[HOST_ESI]) |
| #define REGS_EDI(r) ((r)[HOST_EDI]) |
| #define REGS_EBP(r) ((r)[HOST_EBP]) |
| #define REGS_CS(r) ((r)[HOST_CS]) |
| #define REGS_SS(r) ((r)[HOST_SS]) |
| #define REGS_DS(r) ((r)[HOST_DS]) |
| #define REGS_ES(r) ((r)[HOST_ES]) |
| #define REGS_FS(r) ((r)[HOST_FS]) |
| #define REGS_GS(r) ((r)[HOST_GS]) |
| |
| #define REGS_SET_SYSCALL_RETURN(r, res) REGS_EAX(r) = (res) |
| |
| #define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r)) |
| |
| #endif |
| #ifndef PTRACE_SYSEMU_SINGLESTEP |
| #define PTRACE_SYSEMU_SINGLESTEP 32 |
| #endif |
| |
| union uml_pt_regs { |
| #ifdef UML_CONFIG_MODE_TT |
| struct tt_regs { |
| long syscall; |
| void *sc; |
| struct faultinfo faultinfo; |
| } tt; |
| #endif |
| #ifdef UML_CONFIG_MODE_SKAS |
| struct skas_regs { |
| unsigned long regs[MAX_REG_NR]; |
| unsigned long fp[HOST_FP_SIZE]; |
| unsigned long xfp[HOST_XFP_SIZE]; |
| struct faultinfo faultinfo; |
| long syscall; |
| int is_user; |
| } skas; |
| #endif |
| }; |
| |
| #define EMPTY_UML_PT_REGS { } |
| |
| extern int mode_tt; |
| |
| #define UPT_SC(r) ((r)->tt.sc) |
| #define UPT_IP(r) \ |
| __CHOOSE_MODE(SC_IP(UPT_SC(r)), REGS_IP((r)->skas.regs)) |
| #define UPT_SP(r) \ |
| __CHOOSE_MODE(SC_SP(UPT_SC(r)), REGS_SP((r)->skas.regs)) |
| #define UPT_EFLAGS(r) \ |
| __CHOOSE_MODE(SC_EFLAGS(UPT_SC(r)), REGS_EFLAGS((r)->skas.regs)) |
| #define UPT_EAX(r) \ |
| __CHOOSE_MODE(SC_EAX(UPT_SC(r)), REGS_EAX((r)->skas.regs)) |
| #define UPT_EBX(r) \ |
| __CHOOSE_MODE(SC_EBX(UPT_SC(r)), REGS_EBX((r)->skas.regs)) |
| #define UPT_ECX(r) \ |
| __CHOOSE_MODE(SC_ECX(UPT_SC(r)), REGS_ECX((r)->skas.regs)) |
| #define UPT_EDX(r) \ |
| __CHOOSE_MODE(SC_EDX(UPT_SC(r)), REGS_EDX((r)->skas.regs)) |
| #define UPT_ESI(r) \ |
| __CHOOSE_MODE(SC_ESI(UPT_SC(r)), REGS_ESI((r)->skas.regs)) |
| #define UPT_EDI(r) \ |
| __CHOOSE_MODE(SC_EDI(UPT_SC(r)), REGS_EDI((r)->skas.regs)) |
| #define UPT_EBP(r) \ |
| __CHOOSE_MODE(SC_EBP(UPT_SC(r)), REGS_EBP((r)->skas.regs)) |
| #define UPT_ORIG_EAX(r) \ |
| __CHOOSE_MODE((r)->tt.syscall, (r)->skas.syscall) |
| #define UPT_CS(r) \ |
| __CHOOSE_MODE(SC_CS(UPT_SC(r)), REGS_CS((r)->skas.regs)) |
| #define UPT_SS(r) \ |
| __CHOOSE_MODE(SC_SS(UPT_SC(r)), REGS_SS((r)->skas.regs)) |
| #define UPT_DS(r) \ |
| __CHOOSE_MODE(SC_DS(UPT_SC(r)), REGS_DS((r)->skas.regs)) |
| #define UPT_ES(r) \ |
| __CHOOSE_MODE(SC_ES(UPT_SC(r)), REGS_ES((r)->skas.regs)) |
| #define UPT_FS(r) \ |
| __CHOOSE_MODE(SC_FS(UPT_SC(r)), REGS_FS((r)->skas.regs)) |
| #define UPT_GS(r) \ |
| __CHOOSE_MODE(SC_GS(UPT_SC(r)), REGS_GS((r)->skas.regs)) |
| |
| #define UPT_SYSCALL_ARG1(r) UPT_EBX(r) |
| #define UPT_SYSCALL_ARG2(r) UPT_ECX(r) |
| #define UPT_SYSCALL_ARG3(r) UPT_EDX(r) |
| #define UPT_SYSCALL_ARG4(r) UPT_ESI(r) |
| #define UPT_SYSCALL_ARG5(r) UPT_EDI(r) |
| #define UPT_SYSCALL_ARG6(r) UPT_EBP(r) |
| |
| extern int user_context(unsigned long sp); |
| |
| #define UPT_IS_USER(r) \ |
| CHOOSE_MODE(user_context(UPT_SP(r)), (r)->skas.is_user) |
| |
| struct syscall_args { |
| unsigned long args[6]; |
| }; |
| |
| #define SYSCALL_ARGS(r) ((struct syscall_args) \ |
| { .args = { UPT_SYSCALL_ARG1(r), \ |
| UPT_SYSCALL_ARG2(r), \ |
| UPT_SYSCALL_ARG3(r), \ |
| UPT_SYSCALL_ARG4(r), \ |
| UPT_SYSCALL_ARG5(r), \ |
| UPT_SYSCALL_ARG6(r) } } ) |
| |
| #define UPT_REG(regs, reg) \ |
| ({ unsigned long val; \ |
| switch(reg){ \ |
| case EIP: val = UPT_IP(regs); break; \ |
| case UESP: val = UPT_SP(regs); break; \ |
| case EAX: val = UPT_EAX(regs); break; \ |
| case EBX: val = UPT_EBX(regs); break; \ |
| case ECX: val = UPT_ECX(regs); break; \ |
| case EDX: val = UPT_EDX(regs); break; \ |
| case ESI: val = UPT_ESI(regs); break; \ |
| case EDI: val = UPT_EDI(regs); break; \ |
| case EBP: val = UPT_EBP(regs); break; \ |
| case ORIG_EAX: val = UPT_ORIG_EAX(regs); break; \ |
| case CS: val = UPT_CS(regs); break; \ |
| case SS: val = UPT_SS(regs); break; \ |
| case DS: val = UPT_DS(regs); break; \ |
| case ES: val = UPT_ES(regs); break; \ |
| case FS: val = UPT_FS(regs); break; \ |
| case GS: val = UPT_GS(regs); break; \ |
| case EFL: val = UPT_EFLAGS(regs); break; \ |
| default : \ |
| panic("Bad register in UPT_REG : %d\n", reg); \ |
| val = -1; \ |
| } \ |
| val; \ |
| }) |
| |
| |
| #define UPT_SET(regs, reg, val) \ |
| do { \ |
| switch(reg){ \ |
| case EIP: UPT_IP(regs) = val; break; \ |
| case UESP: UPT_SP(regs) = val; break; \ |
| case EAX: UPT_EAX(regs) = val; break; \ |
| case EBX: UPT_EBX(regs) = val; break; \ |
| case ECX: UPT_ECX(regs) = val; break; \ |
| case EDX: UPT_EDX(regs) = val; break; \ |
| case ESI: UPT_ESI(regs) = val; break; \ |
| case EDI: UPT_EDI(regs) = val; break; \ |
| case EBP: UPT_EBP(regs) = val; break; \ |
| case ORIG_EAX: UPT_ORIG_EAX(regs) = val; break; \ |
| case CS: UPT_CS(regs) = val; break; \ |
| case SS: UPT_SS(regs) = val; break; \ |
| case DS: UPT_DS(regs) = val; break; \ |
| case ES: UPT_ES(regs) = val; break; \ |
| case FS: UPT_FS(regs) = val; break; \ |
| case GS: UPT_GS(regs) = val; break; \ |
| case EFL: UPT_EFLAGS(regs) = val; break; \ |
| default : \ |
| panic("Bad register in UPT_SET : %d\n", reg); \ |
| break; \ |
| } \ |
| } while (0) |
| |
| #define UPT_SET_SYSCALL_RETURN(r, res) \ |
| CHOOSE_MODE(SC_SET_SYSCALL_RETURN(UPT_SC(r), (res)), \ |
| REGS_SET_SYSCALL_RETURN((r)->skas.regs, (res))) |
| |
| #define UPT_RESTART_SYSCALL(r) \ |
| CHOOSE_MODE(SC_RESTART_SYSCALL(UPT_SC(r)), \ |
| REGS_RESTART_SYSCALL((r)->skas.regs)) |
| |
| #define UPT_ORIG_SYSCALL(r) UPT_EAX(r) |
| #define UPT_SYSCALL_NR(r) UPT_ORIG_EAX(r) |
| #define UPT_SYSCALL_RET(r) UPT_EAX(r) |
| |
| #define UPT_FAULTINFO(r) \ |
| CHOOSE_MODE((&(r)->tt.faultinfo), (&(r)->skas.faultinfo)) |
| |
| #endif |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * Emacs will notice this stuff at the end of the file and automatically |
| * adjust the settings for this buffer only. This must remain at the end |
| * of the file. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-file-style: "linux" |
| * End: |
| */ |