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Diffstat (limited to 'arch/um/include/sysdep-i386/ptrace.h')
| -rw-r--r-- | arch/um/include/sysdep-i386/ptrace.h | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/arch/um/include/sysdep-i386/ptrace.h b/arch/um/include/sysdep-i386/ptrace.h new file mode 100644 index 00000000000..661d495e204 --- /dev/null +++ b/arch/um/include/sysdep-i386/ptrace.h @@ -0,0 +1,241 @@ +/* + * 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" + +#define MAX_REG_NR (UM_FRAME_SIZE / sizeof(unsigned long)) +#define MAX_REG_OFFSET (UM_FRAME_SIZE) + +extern void update_debugregs(int seq); + +/* 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)) + +#define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type) + +#define REGS_FAULT_ADDR(r) ((r)->fault_addr) + +#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type) + +#endif +#ifndef PTRACE_SYSEMU_SINGLESTEP +#define PTRACE_SYSEMU_SINGLESTEP 32 +#endif + +#include "choose-mode.h" + +union uml_pt_regs { +#ifdef UML_CONFIG_MODE_TT + struct tt_regs { + long syscall; + void *sc; + } tt; +#endif +#ifdef UML_CONFIG_MODE_SKAS + struct skas_regs { + unsigned long regs[HOST_FRAME_SIZE]; + unsigned long fp[HOST_FP_SIZE]; + unsigned long xfp[HOST_XFP_SIZE]; + unsigned long fault_addr; + unsigned long fault_type; + unsigned long trap_type; + 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_SEGV_IS_FIXABLE(r) \ + CHOOSE_MODE(SC_SEGV_IS_FIXABLE(UPT_SC(r)), \ + REGS_SEGV_IS_FIXABLE(&r->skas)) + +#define UPT_FAULT_ADDR(r) \ + __CHOOSE_MODE(SC_FAULT_ADDR(UPT_SC(r)), REGS_FAULT_ADDR(&r->skas)) + +#define UPT_FAULT_WRITE(r) \ + CHOOSE_MODE(SC_FAULT_WRITE(UPT_SC(r)), REGS_FAULT_WRITE(&r->skas)) + +#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: + */ |