I'm going to be sending the patch below to Andrew. It splits the
userspace-usable stuff into ptrace-abi.h.
The impetus for this was the introduction of SEGMENT_RPL_MASK in place of
0x3 x86-allow-a-kernel-to-not-be-in-ring-0.patch. This breaks the UML
build, as it pulls in the underlying arch's ptrace.h, but I have no
easy way of grabbing the definition of SEGMENT_RPL_MASK.
Splitting the header so that UML gets only the parts that it can use
cleans up the UML side of things nicely. It also produces a header
which is close to something that can be dropped into libc.
Jeff
Index: linux-2.6.17/include/asm-i386/ptrace-abi.h
===================================================================
--- /dev/null
+++ linux-2.6.17/include/asm-i386/ptrace-abi.h
@@ -0,0 +1,60 @@
+#ifndef I386_PTRACE_ABI_H
+#define I386_PTRACE_ABI_H
+
+#define EBX 0
+#define ECX 1
+#define EDX 2
+#define ESI 3
+#define EDI 4
+#define EBP 5
+#define EAX 6
+#define DS 7
+#define ES 8
+#define FS 9
+#define GS 10
+#define ORIG_EAX 11
+#define EIP 12
+#define CS 13
+#define EFL 14
+#define UESP 15
+#define SS 16
+#define FRAME_SIZE 17
+
+/* this struct defines the way the registers are stored on the
+ stack during a system call. */
+
+struct pt_regs {
+ long ebx;
+ long ecx;
+ long edx;
+ long esi;
+ long edi;
+ long ebp;
+ long eax;
+ int xds;
+ int xes;
+ long orig_eax;
+ long eip;
+ int xcs;
+ long eflags;
+ long esp;
+ int xss;
+};
+
+/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
+#define PTRACE_GETREGS 12
+#define PTRACE_SETREGS 13
+#define PTRACE_GETFPREGS 14
+#define PTRACE_SETFPREGS 15
+#define PTRACE_GETFPXREGS 18
+#define PTRACE_SETFPXREGS 19
+
+#define PTRACE_OLDSETOPTIONS 21
+
+#define PTRACE_GET_THREAD_AREA 25
+#define PTRACE_SET_THREAD_AREA 26
+
+#define PTRACE_SYSEMU 31
+#define PTRACE_SYSEMU_SINGLESTEP 32
+
+#endif
Index: linux-2.6.17/include/asm-i386/ptrace.h
===================================================================
--- linux-2.6.17.orig/include/asm-i386/ptrace.h
+++ linux-2.6.17/include/asm-i386/ptrace.h
@@ -1,61 +1,7 @@
#ifndef _I386_PTRACE_H
#define _I386_PTRACE_H
-#define EBX 0
-#define ECX 1
-#define EDX 2
-#define ESI 3
-#define EDI 4
-#define EBP 5
-#define EAX 6
-#define DS 7
-#define ES 8
-#define FS 9
-#define GS 10
-#define ORIG_EAX 11
-#define EIP 12
-#define CS 13
-#define EFL 14
-#define UESP 15
-#define SS 16
-#define FRAME_SIZE 17
-
-/* this struct defines the way the registers are stored on the
- stack during a system call. */
-
-struct pt_regs {
- long ebx;
- long ecx;
- long edx;
- long esi;
- long edi;
- long ebp;
- long eax;
- int xds;
- int xes;
- long orig_eax;
- long eip;
- int xcs;
- long eflags;
- long esp;
- int xss;
-};
-
-/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
-#define PTRACE_GETREGS 12
-#define PTRACE_SETREGS 13
-#define PTRACE_GETFPREGS 14
-#define PTRACE_SETFPREGS 15
-#define PTRACE_GETFPXREGS 18
-#define PTRACE_SETFPXREGS 19
-
-#define PTRACE_OLDSETOPTIONS 21
-
-#define PTRACE_GET_THREAD_AREA 25
-#define PTRACE_SET_THREAD_AREA 26
-
-#define PTRACE_SYSEMU 31
-#define PTRACE_SYSEMU_SINGLESTEP 32
+#include <asm/ptrace-abi.h>
#ifdef __KERNEL__
Index: linux-2.6.17/include/asm-x86_64/ptrace-abi.h
===================================================================
--- /dev/null
+++ linux-2.6.17/include/asm-x86_64/ptrace-abi.h
@@ -0,0 +1,83 @@
+#ifndef _X86_64_PTRACE_ABI_H
+#define _X86_64_PTRACE_ABI_H
+
+#if defined(__ASSEMBLY__) || defined(__FRAME_OFFSETS)
+#define R15 0
+#define R14 8
+#define R13 16
+#define R12 24
+#define RBP 32
+#define RBX 40
+/* arguments: interrupts/non tracing syscalls only save upto here*/
+#define R11 48
+#define R10 56
+#define R9 64
+#define R8 72
+#define RAX 80
+#define RCX 88
+#define RDX 96
+#define RSI 104
+#define RDI 112
+#define ORIG_RAX 120 /* = ERROR */
+/* end of arguments */
+/* cpu exception frame or undefined in case of fast syscall. */
+#define RIP 128
+#define CS 136
+#define EFLAGS 144
+#define RSP 152
+#define SS 160
+#define ARGOFFSET R11
+#endif /* __ASSEMBLY__ */
+
+/* top of stack page */
+#define FRAME_SIZE 168
+
+#define PTRACE_OLDSETOPTIONS 21
+
+#ifndef __ASSEMBLY__
+
+struct pt_regs {
+ unsigned long r15;
+ unsigned long r14;
+ unsigned long r13;
+ unsigned long r12;
+ unsigned long rbp;
+ unsigned long rbx;
+/* arguments: non interrupts/non tracing syscalls only save upto here*/
+ unsigned long r11;
+ unsigned long r10;
+ unsigned long r9;
+ unsigned long r8;
+ unsigned long rax;
+ unsigned long rcx;
+ unsigned long rdx;
+ unsigned long rsi;
+ unsigned long rdi;
+ unsigned long orig_rax;
+/* end of arguments */
+/* cpu exception frame or undefined */
+ unsigned long rip;
+ unsigned long cs;
+ unsigned long eflags;
+ unsigned long rsp;
+ unsigned long ss;
+/* top of stack page */
+};
+
+#endif
+
+/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
+#define PTRACE_GETREGS 12
+#define PTRACE_SETREGS 13
+#define PTRACE_GETFPREGS 14
+#define PTRACE_SETFPREGS 15
+#define PTRACE_GETFPXREGS 18
+#define PTRACE_SETFPXREGS 19
+
+/* only useful for access 32bit programs */
+#define PTRACE_GET_THREAD_AREA 25
+#define PTRACE_SET_THREAD_AREA 26
+
+#define PTRACE_ARCH_PRCTL 30 /* arch_prctl for child */
+
+#endif
Index: linux-2.6.17/include/asm-x86_64/ptrace.h
===================================================================
--- linux-2.6.17.orig/include/asm-x86_64/ptrace.h
+++ linux-2.6.17/include/asm-x86_64/ptrace.h
@@ -1,84 +1,7 @@
#ifndef _X86_64_PTRACE_H
#define _X86_64_PTRACE_H
-#if defined(__ASSEMBLY__) || defined(__FRAME_OFFSETS)
-#define R15 0
-#define R14 8
-#define R13 16
-#define R12 24
-#define RBP 32
-#define RBX 40
-/* arguments: interrupts/non tracing syscalls only save upto here*/
-#define R11 48
-#define R10 56
-#define R9 64
-#define R8 72
-#define RAX 80
-#define RCX 88
-#define RDX 96
-#define RSI 104
-#define RDI 112
-#define ORIG_RAX 120 /* = ERROR */
-/* end of arguments */
-/* cpu exception frame or undefined in case of fast syscall. */
-#define RIP 128
-#define CS 136
-#define EFLAGS 144
-#define RSP 152
-#define SS 160
-#define ARGOFFSET R11
-#endif /* __ASSEMBLY__ */
-
-/* top of stack page */
-#define FRAME_SIZE 168
-
-#define PTRACE_OLDSETOPTIONS 21
-
-#ifndef __ASSEMBLY__
-
-struct pt_regs {
- unsigned long r15;
- unsigned long r14;
- unsigned long r13;
- unsigned long r12;
- unsigned long rbp;
- unsigned long rbx;
-/* arguments: non interrupts/non tracing syscalls only save upto here*/
- unsigned long r11;
- unsigned long r10;
- unsigned long r9;
- unsigned long r8;
- unsigned long rax;
- unsigned long rcx;
- unsigned long rdx;
- unsigned long rsi;
- unsigned long rdi;
- unsigned long orig_rax;
-/* end of arguments */
-/* cpu exception frame or undefined */
- unsigned long rip;
- unsigned long cs;
- unsigned long eflags;
- unsigned long rsp;
- unsigned long ss;
-/* top of stack page */
-};
-
-#endif
-
-/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
-#define PTRACE_GETREGS 12
-#define PTRACE_SETREGS 13
-#define PTRACE_GETFPREGS 14
-#define PTRACE_SETFPREGS 15
-#define PTRACE_GETFPXREGS 18
-#define PTRACE_SETFPXREGS 19
-
-/* only useful for access 32bit programs */
-#define PTRACE_GET_THREAD_AREA 25
-#define PTRACE_SET_THREAD_AREA 26
-
-#define PTRACE_ARCH_PRCTL 30 /* arch_prctl for child */
+#include <asm/ptrace-abi.h>
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
#define user_mode(regs) (!!((regs)->cs & 3))
-
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