| #ifndef _PPC_PTRACE_H | |
| #define _PPC_PTRACE_H | |
| /* | |
| * This struct defines the way the registers are stored on the | |
| * kernel stack during a system call or other kernel entry. | |
| * | |
| * this should only contain volatile regs | |
| * since we can keep non-volatile in the thread_struct | |
| * should set this up when only volatiles are saved | |
| * by intr code. | |
| * | |
| * Since this is going on the stack, *CARE MUST BE TAKEN* to insure | |
| * that the overall structure is a multiple of 16 bytes in length. | |
| * | |
| * Note that the offsets of the fields in this struct correspond with | |
| * the PT_* values below. This simplifies arch/powerpc/kernel/ptrace.c. | |
| */ | |
| #ifndef __ASSEMBLY__ | |
| #ifdef CONFIG_PPC64BRIDGE | |
| #define PPC_REG unsigned long /*long*/ | |
| #else | |
| #define PPC_REG unsigned long | |
| #endif | |
| struct pt_regs { | |
| PPC_REG gpr[32]; | |
| PPC_REG nip; | |
| PPC_REG msr; | |
| PPC_REG orig_gpr3; /* Used for restarting system calls */ | |
| PPC_REG ctr; | |
| PPC_REG link; | |
| PPC_REG xer; | |
| PPC_REG ccr; | |
| PPC_REG mq; /* 601 only (not used at present) */ | |
| /* Used on APUS to hold IPL value. */ | |
| PPC_REG trap; /* Reason for being here */ | |
| PPC_REG dar; /* Fault registers */ | |
| PPC_REG dsisr; | |
| PPC_REG result; /* Result of a system call */ | |
| }; | |
| #endif | |
| #define STACK_FRAME_OVERHEAD 16 /* size of minimum stack frame */ | |
| /* Size of stack frame allocated when calling signal handler. */ | |
| #define __SIGNAL_FRAMESIZE 64 | |
| #define instruction_pointer(regs) ((regs)->nip) | |
| #define user_mode(regs) (((regs)->msr & MSR_PR) != 0) | |
| /* | |
| * Offsets used by 'ptrace' system call interface. | |
| * These can't be changed without breaking binary compatibility | |
| * with MkLinux, etc. | |
| */ | |
| #define PT_R0 0 | |
| #define PT_R1 1 | |
| #define PT_R2 2 | |
| #define PT_R3 3 | |
| #define PT_R4 4 | |
| #define PT_R5 5 | |
| #define PT_R6 6 | |
| #define PT_R7 7 | |
| #define PT_R8 8 | |
| #define PT_R9 9 | |
| #define PT_R10 10 | |
| #define PT_R11 11 | |
| #define PT_R12 12 | |
| #define PT_R13 13 | |
| #define PT_R14 14 | |
| #define PT_R15 15 | |
| #define PT_R16 16 | |
| #define PT_R17 17 | |
| #define PT_R18 18 | |
| #define PT_R19 19 | |
| #define PT_R20 20 | |
| #define PT_R21 21 | |
| #define PT_R22 22 | |
| #define PT_R23 23 | |
| #define PT_R24 24 | |
| #define PT_R25 25 | |
| #define PT_R26 26 | |
| #define PT_R27 27 | |
| #define PT_R28 28 | |
| #define PT_R29 29 | |
| #define PT_R30 30 | |
| #define PT_R31 31 | |
| #define PT_NIP 32 | |
| #define PT_MSR 33 | |
| #ifdef __KERNEL__ | |
| #define PT_ORIG_R3 34 | |
| #endif | |
| #define PT_CTR 35 | |
| #define PT_LNK 36 | |
| #define PT_XER 37 | |
| #define PT_CCR 38 | |
| #define PT_MQ 39 | |
| #define PT_FPR0 48 /* each FP reg occupies 2 slots in this space */ | |
| #define PT_FPR31 (PT_FPR0 + 2*31) | |
| #define PT_FPSCR (PT_FPR0 + 2*32 + 1) | |
| #endif |