[patch 2/5] ppc64: ptrace cleanups
Anton Blanchard
anton at samba.org
Sat Sep 10 16:01:08 EST 2005
- 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 at samba.org>
---
Index: build/include/asm-ppc64/ptrace.h
===================================================================
--- build.orig/include/asm-ppc64/ptrace.h 2005-09-10 14:24:43.000000000 +1000
+++ build/include/asm-ppc64/ptrace.h 2005-09-10 14:26:22.000000000 +1000
@@ -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() \
@@ -89,6 +82,16 @@
#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.
*/
@@ -135,17 +138,21 @@
#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 */
@@ -173,17 +180,27 @@
#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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