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Diffstat (limited to 'include/asm-ppc64/ptrace.h')
| -rw-r--r-- | include/asm-ppc64/ptrace.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/include/asm-ppc64/ptrace.h b/include/asm-ppc64/ptrace.h new file mode 100644 index 000000000000..c96aad28fc08 --- /dev/null +++ b/include/asm-ppc64/ptrace.h @@ -0,0 +1,189 @@ +#ifndef _PPC64_PTRACE_H +#define _PPC64_PTRACE_H + +/* + * Copyright (C) 2001 PPC64 Team, IBM Corp + * + * 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/ppc64/kernel/ptrace.c. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef __ASSEMBLY__ +#define PPC_REG unsigned long +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 softe; /* Soft enabled/disabled */ + PPC_REG trap; /* Reason for being here */ + PPC_REG dar; /* Fault registers */ + PPC_REG dsisr; + PPC_REG result; /* Result of a system call */ +}; + +#define PPC_REG_32 unsigned int +struct pt_regs32 { + PPC_REG_32 gpr[32]; + PPC_REG_32 nip; + PPC_REG_32 msr; + PPC_REG_32 orig_gpr3; /* Used for restarting system calls */ + PPC_REG_32 ctr; + PPC_REG_32 link; + PPC_REG_32 xer; + PPC_REG_32 ccr; + PPC_REG_32 mq; /* 601 only (not used at present) */ + /* Used on APUS to hold IPL value. */ + PPC_REG_32 trap; /* Reason for being here */ + PPC_REG_32 dar; /* Fault registers */ + PPC_REG_32 dsisr; + PPC_REG_32 result; /* Result of a system call */ +}; + +#define instruction_pointer(regs) ((regs)->nip) +#ifdef CONFIG_SMP +extern unsigned long profile_pc(struct pt_regs *regs); +#else +#define profile_pc(regs) instruction_pointer(regs) +#endif + +#endif /* __ASSEMBLY__ */ + +#define STACK_FRAME_OVERHEAD 112 /* size of minimum stack frame */ + +/* Size of dummy stack frame allocated when calling signal handler. */ +#define __SIGNAL_FRAMESIZE 128 +#define __SIGNAL_FRAMESIZE32 64 + +#define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1) + +#define force_successful_syscall_return() \ + (current_thread_info()->syscall_noerror = 1) + +/* + * We use the least-significant bit of the trap field to indicate + * whether we have saved the full set of registers, or only a + * partial set. A 1 there means the partial set. + */ +#define FULL_REGS(regs) (((regs)->trap & 1) == 0) +#define TRAP(regs) ((regs)->trap & ~0xF) +#define CHECK_FULL_REGS(regs) BUG_ON(regs->trap & 1) + +/* + * Offsets used by 'ptrace' system call interface. + */ +#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_SOFTE 39 +#define PT_RESULT 43 + +#define PT_FPR0 48 + +/* Kernel and userspace will both use this PT_FPSCR value. 32-bit apps will have + * visibility to the asm-ppc/ptrace.h header instead of this one. + */ +#define PT_FPSCR (PT_FPR0 + 32) /* each FP reg occupies 1 slot in 64-bit space */ + +#ifdef __KERNEL__ +#define PT_FPSCR32 (PT_FPR0 + 2*32 + 1) /* each FP reg occupies 2 32-bit userspace slots */ +#endif + +#define PT_VR0 82 /* each Vector reg occupies 2 slots in 64-bit */ +#define PT_VSCR (PT_VR0 + 32*2 + 1) +#define PT_VRSAVE (PT_VR0 + 33*2) + +#ifdef __KERNEL__ +#define PT_VR0_32 164 /* each Vector reg occupies 4 slots in 32-bit */ +#define PT_VSCR_32 (PT_VR0 + 32*4 + 3) +#define PT_VRSAVE_32 (PT_VR0 + 33*4) +#endif + +/* + * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go. + * The transfer totals 34 quadword. Quadwords 0-31 contain the + * corresponding vector registers. Quadword 32 contains the vscr as the + * last word (offset 12) within that quadword. Quadword 33 contains the + * vrsave as the first word (offset 0) within the quadword. + * + * This definition of the VMX state is compatible with the current PPC32 + * ptrace interface. This allows signal handling and ptrace to use the same + * structures. This also simplifies the implementation of a bi-arch + * (combined (32- and 64-bit) gdb. + */ +#define PTRACE_GETVRREGS 18 +#define PTRACE_SETVRREGS 19 + +/* Additional PTRACE requests implemented on PowerPC. */ +#define PPC_PTRACE_GETREGS 0x99 /* Get GPRs 0 - 31 */ +#define PPC_PTRACE_SETREGS 0x98 /* Set GPRs 0 - 31 */ +#define PPC_PTRACE_GETFPREGS 0x97 /* Get FPRs 0 - 31 */ +#define PPC_PTRACE_SETFPREGS 0x96 /* Set FPRs 0 - 31 */ +#define PPC_PTRACE_PEEKTEXT_3264 0x95 /* Read word at location ADDR on a 64-bit process from a 32-bit process. */ +#define PPC_PTRACE_PEEKDATA_3264 0x94 /* Read word at location ADDR on a 64-bit process from a 32-bit process. */ +#define PPC_PTRACE_POKETEXT_3264 0x93 /* Write word at location ADDR on a 64-bit process from a 32-bit process. */ +#define PPC_PTRACE_POKEDATA_3264 0x92 /* Write word at location ADDR on a 64-bit process from a 32-bit process. */ +#define PPC_PTRACE_PEEKUSR_3264 0x91 /* Read a register (specified by ADDR) out of the "user area" on a 64-bit process from a 32-bit process. */ +#define PPC_PTRACE_POKEUSR_3264 0x90 /* Write DATA into location ADDR within the "user area" on a 64-bit process from a 32-bit process. */ + + +#endif /* _PPC64_PTRACE_H */ |