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[PATCH] ppc64: ptrace cleanups
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- Remove the PPC_REG* defines
- Wrap some more stuff with ifdef __KERNEL__
- Add missing PT_TRAP, PT_DAR, PT_DSISR defines
- Add PTRACE_GETEVRREGS/PTRACE_SETEVRREGS, even though we dont use it on
  ppc64 we dont want to allocate them for something else.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Anton Blanchard authored and Paul Mackerras committed Sep 12, 2005
1 parent 962bca7 commit a098722
Showing 1 changed file with 69 additions and 52 deletions.
121 changes: 69 additions & 52 deletions include/asm-ppc64/ptrace.h
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Original file line number Diff line number Diff line change
Expand Up @@ -25,56 +25,49 @@
*/

#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 */
unsigned long gpr[32];
unsigned long nip;
unsigned long msr;
unsigned long orig_gpr3; /* Used for restarting system calls */
unsigned long ctr;
unsigned long link;
unsigned long xer;
unsigned long ccr;
unsigned long softe; /* Soft enabled/disabled */
unsigned long trap; /* Reason for being here */
unsigned long dar; /* Fault registers */
unsigned long dsisr;
unsigned long 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 */
unsigned int gpr[32];
unsigned int nip;
unsigned int msr;
unsigned int orig_gpr3; /* Used for restarting system calls */
unsigned int ctr;
unsigned int link;
unsigned int xer;
unsigned int ccr;
unsigned int mq; /* 601 only (not used at present) */
unsigned int trap; /* Reason for being here */
unsigned int dar; /* Fault registers */
unsigned int dsisr;
unsigned int result; /* Result of a system call */
};

#ifdef __KERNEL__

#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() \
Expand All @@ -89,6 +82,16 @@ extern unsigned long profile_pc(struct pt_regs *regs);
#define TRAP(regs) ((regs)->trap & ~0xF)
#define CHECK_FULL_REGS(regs) BUG_ON(regs->trap & 1)

#endif /* __KERNEL__ */

#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

/*
* Offsets used by 'ptrace' system call interface.
*/
Expand Down Expand Up @@ -135,17 +138,21 @@ extern unsigned long profile_pc(struct pt_regs *regs);
#define PT_XER 37
#define PT_CCR 38
#define PT_SOFTE 39
#define PT_TRAP 40
#define PT_DAR 41
#define PT_DSISR 42
#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.
/*
* 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 */
#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 */
#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 */
Expand Down Expand Up @@ -173,17 +180,27 @@ extern unsigned long profile_pc(struct pt_regs *regs);
#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. */
/*
* While we dont have 64bit book E processors, we need to reserve the
* relevant ptrace calls for 32bit compatibility.
*/
#if 0
#define PTRACE_GETEVRREGS 20
#define PTRACE_SETEVRREGS 21
#endif

/* 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 */

/* Calls to trace a 64bit program from a 32bit program */
#define PPC_PTRACE_PEEKTEXT_3264 0x95
#define PPC_PTRACE_PEEKDATA_3264 0x94
#define PPC_PTRACE_POKETEXT_3264 0x93
#define PPC_PTRACE_POKEDATA_3264 0x92
#define PPC_PTRACE_PEEKUSR_3264 0x91
#define PPC_PTRACE_POKEUSR_3264 0x90

#endif /* _PPC64_PTRACE_H */

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