Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-ppc/ptrace.h b/include/asm-ppc/ptrace.h
new file mode 100644
index 0000000..9d4e4ea
--- /dev/null
+++ b/include/asm-ppc/ptrace.h
@@ -0,0 +1,145 @@
+#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/ppc/kernel/ptrace.c.
+ */
+
+#ifndef __ASSEMBLY__
+struct pt_regs {
+ 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 mq; /* 601 only (not used at present) */
+ /* Used on APUS to hold IPL value. */
+ unsigned long trap; /* Reason for being here */
+ /* N.B. for critical exceptions on 4xx, the dar and dsisr
+ fields are overloaded to hold srr0 and srr1. */
+ unsigned long dar; /* Fault registers */
+ unsigned long dsisr; /* on 4xx/Book-E used for ESR */
+ unsigned long result; /* Result of a system call */
+};
+
+#endif /* __ASSEMBLY__ */
+
+#ifdef __KERNEL__
+#define STACK_FRAME_OVERHEAD 16 /* size of minimum stack frame */
+
+/* Size of stack frame allocated when calling signal handler. */
+#define __SIGNAL_FRAMESIZE 64
+
+#ifndef __ASSEMBLY__
+#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
+
+#define user_mode(regs) (((regs)->msr & MSR_PR) != 0)
+
+#define force_successful_syscall_return() \
+ do { \
+ current_thread_info()->local_flags |= _TIFL_FORCE_NOERROR; \
+ } while(0)
+
+/*
+ * 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.
+ * On 4xx we use the next bit to indicate whether the exception
+ * is a critical exception (1 means it is).
+ */
+#define FULL_REGS(regs) (((regs)->trap & 1) == 0)
+#define IS_CRITICAL_EXC(regs) (((regs)->trap & 2) == 0)
+#define TRAP(regs) ((regs)->trap & ~0xF)
+
+#define CHECK_FULL_REGS(regs) \
+do { \
+ if ((regs)->trap & 1) \
+ printk(KERN_CRIT "%s: partial register set\n", __FUNCTION__); \
+} while (0)
+#endif /* __ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+
+/*
+ * 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)
+
+/* Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go */
+#define PTRACE_GETVRREGS 18
+#define PTRACE_SETVRREGS 19
+
+/* Get/set all the upper 32-bits of the SPE registers, accumulator, and
+ * spefscr, in one go */
+#define PTRACE_GETEVRREGS 20
+#define PTRACE_SETEVRREGS 21
+
+#endif