Linux-2.6.12-rc2v2.6.12-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!

6 files changed, 651 insertions, 0 deletions

diff --git a/arch/um/include/sysdep-x86_64/checksum.h b/arch/um/include/sysdep-x86_64/checksum.h
new file mode 100644
index 00000000000..572c6c19be3
--- /dev/null
+++ b/arch/um/include/sysdep-x86_64/checksum.h
@@ -0,0 +1,151 @@
+/*
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_SYSDEP_CHECKSUM_H
+#define __UM_SYSDEP_CHECKSUM_H
+
+#include "linux/string.h"
+#include "linux/in6.h"
+#include "asm/uaccess.h"
+
+extern unsigned int csum_partial_copy_from(const unsigned char *src, unsigned char *dst, int len,
+					   int sum, int *err_ptr);
+extern unsigned csum_partial(const unsigned char *buff, unsigned len,
+                             unsigned sum);
+
+/*
+ *	Note: when you get a NULL pointer exception here this means someone
+ *	passed in an incorrect kernel address to one of these functions.
+ *
+ *	If you use these functions directly please don't forget the
+ *	access_ok().
+ */
+
+static __inline__
+unsigned int csum_partial_copy_nocheck(const unsigned char *src, unsigned char *dst,
+				       int len, int sum)
+{
+	memcpy(dst, src, len);
+	return(csum_partial(dst, len, sum));
+}
+
+static __inline__
+unsigned int csum_partial_copy_from_user(const unsigned char *src, unsigned char *dst,
+					 int len, int sum, int *err_ptr)
+{
+	return csum_partial_copy_from(src, dst, len, sum, err_ptr);
+}
+
+/**
+ * csum_fold - Fold and invert a 32bit checksum.
+ * sum: 32bit unfolded sum
+ *
+ * Fold a 32bit running checksum to 16bit and invert it. This is usually
+ * the last step before putting a checksum into a packet.
+ * Make sure not to mix with 64bit checksums.
+ */
+static inline unsigned int csum_fold(unsigned int sum)
+{
+	__asm__(
+		"  addl %1,%0\n"
+		"  adcl $0xffff,%0"
+		: "=r" (sum)
+		: "r" (sum << 16), "0" (sum & 0xffff0000)
+	);
+	return (~sum) >> 16;
+}
+
+/**
+ * csum_tcpup_nofold - Compute an IPv4 pseudo header checksum.
+ * @saddr: source address
+ * @daddr: destination address
+ * @len: length of packet
+ * @proto: ip protocol of packet
+ * @sum: initial sum to be added in (32bit unfolded)
+ *
+ * Returns the pseudo header checksum the input data. Result is
+ * 32bit unfolded.
+ */
+static inline unsigned long
+csum_tcpudp_nofold(unsigned saddr, unsigned daddr, unsigned short len,
+		   unsigned short proto, unsigned int sum)
+{
+	asm("  addl %1, %0\n"
+	    "  adcl %2, %0\n"
+	    "  adcl %3, %0\n"
+	    "  adcl $0, %0\n"
+		: "=r" (sum)
+	    : "g" (daddr), "g" (saddr), "g" ((ntohs(len)<<16)+proto*256), "0" (sum));
+    return sum;
+}
+
+/*
+ * computes the checksum of the TCP/UDP pseudo-header
+ * returns a 16-bit checksum, already complemented
+ */
+static inline unsigned short int csum_tcpudp_magic(unsigned long saddr,
+						   unsigned long daddr,
+						   unsigned short len,
+						   unsigned short proto,
+						   unsigned int sum)
+{
+	return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
+}
+
+/**
+ * ip_fast_csum - Compute the IPv4 header checksum efficiently.
+ * iph: ipv4 header
+ * ihl: length of header / 4
+ */
+static inline unsigned short ip_fast_csum(unsigned char *iph, unsigned int ihl)
+{
+	unsigned int sum;
+
+	asm(	"  movl (%1), %0\n"
+		"  subl $4, %2\n"
+		"  jbe 2f\n"
+		"  addl 4(%1), %0\n"
+		"  adcl 8(%1), %0\n"
+		"  adcl 12(%1), %0\n"
+		"1: adcl 16(%1), %0\n"
+		"  lea 4(%1), %1\n"
+		"  decl %2\n"
+		"  jne	1b\n"
+		"  adcl $0, %0\n"
+		"  movl %0, %2\n"
+		"  shrl $16, %0\n"
+		"  addw %w2, %w0\n"
+		"  adcl $0, %0\n"
+		"  notl %0\n"
+		"2:"
+	/* Since the input registers which are loaded with iph and ipl
+	   are modified, we must also specify them as outputs, or gcc
+	   will assume they contain their original values. */
+	: "=r" (sum), "=r" (iph), "=r" (ihl)
+	: "1" (iph), "2" (ihl)
+	: "memory");
+	return(sum);
+}
+
+static inline unsigned add32_with_carry(unsigned a, unsigned b)
+{
+        asm("addl %2,%0\n\t"
+            "adcl $0,%0"
+            : "=r" (a)
+            : "0" (a), "r" (b));
+        return a;
+}
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/include/sysdep-x86_64/ptrace.h b/arch/um/include/sysdep-x86_64/ptrace.h
new file mode 100644
index 00000000000..915c82daffb
--- /dev/null
+++ b/arch/um/include/sysdep-x86_64/ptrace.h
@@ -0,0 +1,264 @@
+/*
+ * Copyright 2003 PathScale, Inc.
+ *
+ * Licensed under the GPL
+ */
+
+#ifndef __SYSDEP_X86_64_PTRACE_H
+#define __SYSDEP_X86_64_PTRACE_H
+
+#include "uml-config.h"
+#include "user_constants.h"
+
+#define MAX_REG_OFFSET (UM_FRAME_SIZE)
+#define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long))
+
+#ifdef UML_CONFIG_MODE_TT
+#include "sysdep/sc.h"
+#endif
+
+#ifdef UML_CONFIG_MODE_SKAS
+#include "skas_ptregs.h"
+
+#define REGS_IP(r) ((r)[HOST_IP])
+#define REGS_SP(r) ((r)[HOST_SP])
+
+#define REGS_RBX(r) ((r)[HOST_RBX])
+#define REGS_RCX(r) ((r)[HOST_RCX])
+#define REGS_RDX(r) ((r)[HOST_RDX])
+#define REGS_RSI(r) ((r)[HOST_RSI])
+#define REGS_RDI(r) ((r)[HOST_RDI])
+#define REGS_RBP(r) ((r)[HOST_RBP])
+#define REGS_RAX(r) ((r)[HOST_RAX])
+#define REGS_R8(r) ((r)[HOST_R8])
+#define REGS_R9(r) ((r)[HOST_R9])
+#define REGS_R10(r) ((r)[HOST_R10])
+#define REGS_R11(r) ((r)[HOST_R11])
+#define REGS_R12(r) ((r)[HOST_R12])
+#define REGS_R13(r) ((r)[HOST_R13])
+#define REGS_R14(r) ((r)[HOST_R14])
+#define REGS_R15(r) ((r)[HOST_R15])
+#define REGS_CS(r) ((r)[HOST_CS])
+#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
+#define REGS_SS(r) ((r)[HOST_SS])
+
+#define HOST_FS_BASE 21
+#define HOST_GS_BASE 22
+#define HOST_DS 23
+#define HOST_ES 24
+#define HOST_FS 25
+#define HOST_GS 26
+
+#define REGS_FS_BASE(r) ((r)[HOST_FS_BASE])
+#define REGS_GS_BASE(r) ((r)[HOST_GS_BASE])
+#define REGS_DS(r) ((r)[HOST_DS])
+#define REGS_ES(r) ((r)[HOST_ES])
+#define REGS_FS(r) ((r)[HOST_FS])
+#define REGS_GS(r) ((r)[HOST_GS])
+
+#define REGS_ORIG_RAX(r) ((r)[HOST_ORIG_RAX])
+
+#define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(r) = (res)
+
+#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))
+
+#define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type)
+
+#define REGS_FAULT_ADDR(r) ((r)->fault_addr)
+
+#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type)
+
+#define REGS_TRAP(r) ((r)->trap_type)
+
+#define REGS_ERR(r) ((r)->fault_type)
+
+#endif
+
+#include "choose-mode.h"
+
+/* XXX */
+union uml_pt_regs {
+#ifdef UML_CONFIG_MODE_TT
+	struct tt_regs {
+		long syscall;
+		unsigned long orig_rax;
+		void *sc;
+	} tt;
+#endif
+#ifdef UML_CONFIG_MODE_SKAS
+	struct skas_regs {
+		/* XXX */
+		unsigned long regs[27];
+		unsigned long fp[65];
+		unsigned long fault_addr;
+		unsigned long fault_type;
+		unsigned long trap_type;
+		long syscall;
+		int is_user;
+	} skas;
+#endif
+};
+
+#define EMPTY_UML_PT_REGS { }
+
+/* XXX */
+extern int mode_tt;
+
+#define UPT_RBX(r) __CHOOSE_MODE(SC_RBX(UPT_SC(r)), REGS_RBX((r)->skas.regs))
+#define UPT_RCX(r) __CHOOSE_MODE(SC_RCX(UPT_SC(r)), REGS_RCX((r)->skas.regs))
+#define UPT_RDX(r) __CHOOSE_MODE(SC_RDX(UPT_SC(r)), REGS_RDX((r)->skas.regs))
+#define UPT_RSI(r) __CHOOSE_MODE(SC_RSI(UPT_SC(r)), REGS_RSI((r)->skas.regs))
+#define UPT_RDI(r) __CHOOSE_MODE(SC_RDI(UPT_SC(r)), REGS_RDI((r)->skas.regs))
+#define UPT_RBP(r) __CHOOSE_MODE(SC_RBP(UPT_SC(r)), REGS_RBP((r)->skas.regs))
+#define UPT_RAX(r) __CHOOSE_MODE(SC_RAX(UPT_SC(r)), REGS_RAX((r)->skas.regs))
+#define UPT_R8(r) __CHOOSE_MODE(SC_R8(UPT_SC(r)), REGS_R8((r)->skas.regs))
+#define UPT_R9(r) __CHOOSE_MODE(SC_R9(UPT_SC(r)), REGS_R9((r)->skas.regs))
+#define UPT_R10(r) __CHOOSE_MODE(SC_R10(UPT_SC(r)), REGS_R10((r)->skas.regs))
+#define UPT_R11(r) __CHOOSE_MODE(SC_R11(UPT_SC(r)), REGS_R11((r)->skas.regs))
+#define UPT_R12(r) __CHOOSE_MODE(SC_R12(UPT_SC(r)), REGS_R12((r)->skas.regs))
+#define UPT_R13(r) __CHOOSE_MODE(SC_R13(UPT_SC(r)), REGS_R13((r)->skas.regs))
+#define UPT_R14(r) __CHOOSE_MODE(SC_R14(UPT_SC(r)), REGS_R14((r)->skas.regs))
+#define UPT_R15(r) __CHOOSE_MODE(SC_R15(UPT_SC(r)), REGS_R15((r)->skas.regs))
+#define UPT_CS(r) __CHOOSE_MODE(SC_CS(UPT_SC(r)), REGS_CS((r)->skas.regs))
+#define UPT_FS(r) __CHOOSE_MODE(SC_FS(UPT_SC(r)), REGS_FS((r)->skas.regs))
+#define UPT_GS(r) __CHOOSE_MODE(SC_GS(UPT_SC(r)), REGS_GS((r)->skas.regs))
+#define UPT_DS(r) __CHOOSE_MODE(SC_DS(UPT_SC(r)), REGS_DS((r)->skas.regs))
+#define UPT_ES(r) __CHOOSE_MODE(SC_ES(UPT_SC(r)), REGS_ES((r)->skas.regs))
+#define UPT_CS(r) __CHOOSE_MODE(SC_CS(UPT_SC(r)), REGS_CS((r)->skas.regs))
+#define UPT_ORIG_RAX(r) \
+	__CHOOSE_MODE((r)->tt.orig_rax, REGS_ORIG_RAX((r)->skas.regs))
+
+#define UPT_IP(r) __CHOOSE_MODE(SC_IP(UPT_SC(r)), REGS_IP((r)->skas.regs))
+#define UPT_SP(r) __CHOOSE_MODE(SC_SP(UPT_SC(r)), REGS_SP((r)->skas.regs))
+
+#define UPT_EFLAGS(r) \
+	__CHOOSE_MODE(SC_EFLAGS(UPT_SC(r)), REGS_EFLAGS((r)->skas.regs))
+#define UPT_SC(r) ((r)->tt.sc)
+#define UPT_SYSCALL_NR(r) __CHOOSE_MODE((r)->tt.syscall, (r)->skas.syscall)
+
+extern int user_context(unsigned long sp);
+
+#define UPT_IS_USER(r) \
+	CHOOSE_MODE(user_context(UPT_SP(r)), (r)->skas.is_user)
+
+#define UPT_SYSCALL_ARG1(r) UPT_RDI(r)
+#define UPT_SYSCALL_ARG2(r) UPT_RSI(r)
+#define UPT_SYSCALL_ARG3(r) UPT_RDX(r)
+#define UPT_SYSCALL_ARG4(r) UPT_R10(r)
+#define UPT_SYSCALL_ARG5(r) UPT_R8(r)
+#define UPT_SYSCALL_ARG6(r) UPT_R9(r)
+
+struct syscall_args {
+	unsigned long args[6];
+};
+
+#define SYSCALL_ARGS(r) ((struct syscall_args) \
+                        { .args = { UPT_SYSCALL_ARG1(r), \
+                                    UPT_SYSCALL_ARG2(r), \
+ 			            UPT_SYSCALL_ARG3(r), \
+                                    UPT_SYSCALL_ARG4(r), \
+		                    UPT_SYSCALL_ARG5(r), \
+                                    UPT_SYSCALL_ARG6(r) } } )
+
+#define UPT_REG(regs, reg) \
+        ({      unsigned long val; \
+                switch(reg){ \
+		case R8: val = UPT_R8(regs); break; \
+		case R9: val = UPT_R9(regs); break; \
+		case R10: val = UPT_R10(regs); break; \
+		case R11: val = UPT_R11(regs); break; \
+		case R12: val = UPT_R12(regs); break; \
+		case R13: val = UPT_R13(regs); break; \
+		case R14: val = UPT_R14(regs); break; \
+		case R15: val = UPT_R15(regs); break; \
+                case RIP: val = UPT_IP(regs); break; \
+                case RSP: val = UPT_SP(regs); break; \
+                case RAX: val = UPT_RAX(regs); break; \
+                case RBX: val = UPT_RBX(regs); break; \
+                case RCX: val = UPT_RCX(regs); break; \
+                case RDX: val = UPT_RDX(regs); break; \
+                case RSI: val = UPT_RSI(regs); break; \
+                case RDI: val = UPT_RDI(regs); break; \
+                case RBP: val = UPT_RBP(regs); break; \
+                case ORIG_RAX: val = UPT_ORIG_RAX(regs); break; \
+                case CS: val = UPT_CS(regs); break; \
+                case DS: val = UPT_DS(regs); break; \
+                case ES: val = UPT_ES(regs); break; \
+                case FS: val = UPT_FS(regs); break; \
+                case GS: val = UPT_GS(regs); break; \
+                case EFLAGS: val = UPT_EFLAGS(regs); break; \
+                default :  \
+                        panic("Bad register in UPT_REG : %d\n", reg);  \
+                        val = -1; \
+                } \
+                val; \
+        })
+
+
+#define UPT_SET(regs, reg, val) \
+        ({      unsigned long val; \
+                switch(reg){ \
+		case R8: UPT_R8(regs) = val; break; \
+		case R9: UPT_R9(regs) = val; break; \
+		case R10: UPT_R10(regs) = val; break; \
+		case R11: UPT_R11(regs) = val; break; \
+		case R12: UPT_R12(regs) = val; break; \
+		case R13: UPT_R13(regs) = val; break; \
+		case R14: UPT_R14(regs) = val; break; \
+		case R15: UPT_R15(regs) = val; break; \
+                case RIP: UPT_IP(regs) = val; break; \
+                case RSP: UPT_SP(regs) = val; break; \
+                case RAX: UPT_RAX(regs) = val; break; \
+                case RBX: UPT_RBX(regs) = val; break; \
+                case RCX: UPT_RCX(regs) = val; break; \
+                case RDX: UPT_RDX(regs) = val; break; \
+                case RSI: UPT_RSI(regs) = val; break; \
+                case RDI: UPT_RDI(regs) = val; break; \
+                case RBP: UPT_RBP(regs) = val; break; \
+                case ORIG_RAX: UPT_ORIG_RAX(regs) = val; break; \
+                case CS: UPT_CS(regs) = val; break; \
+                case DS: UPT_DS(regs) = val; break; \
+                case ES: UPT_ES(regs) = val; break; \
+                case FS: UPT_FS(regs) = val; break; \
+                case GS: UPT_GS(regs) = val; break; \
+                case EFLAGS: UPT_EFLAGS(regs) = val; break; \
+                default :  \
+                        panic("Bad register in UPT_SET : %d\n", reg);  \
+			break; \
+                } \
+                val; \
+        })
+
+#define UPT_SET_SYSCALL_RETURN(r, res) \
+	CHOOSE_MODE(SC_SET_SYSCALL_RETURN(UPT_SC(r), (res)), \
+                    REGS_SET_SYSCALL_RETURN((r)->skas.regs, (res)))
+
+#define UPT_RESTART_SYSCALL(r) \
+	CHOOSE_MODE(SC_RESTART_SYSCALL(UPT_SC(r)), \
+		    REGS_RESTART_SYSCALL((r)->skas.regs))
+
+#define UPT_SEGV_IS_FIXABLE(r) \
+	CHOOSE_MODE(SC_SEGV_IS_FIXABLE(UPT_SC(r)), \
+                    REGS_SEGV_IS_FIXABLE(&r->skas))
+
+#define UPT_FAULT_ADDR(r) \
+	__CHOOSE_MODE(SC_FAULT_ADDR(UPT_SC(r)), REGS_FAULT_ADDR(&r->skas))
+
+#define UPT_FAULT_WRITE(r) \
+	CHOOSE_MODE(SC_FAULT_WRITE(UPT_SC(r)), REGS_FAULT_WRITE(&r->skas))
+
+#define UPT_TRAP(r) __CHOOSE_MODE(SC_TRAP_TYPE(UPT_SC(r)), REGS_TRAP(&r->skas))
+#define UPT_ERR(r) __CHOOSE_MODE(SC_FAULT_TYPE(UPT_SC(r)), REGS_ERR(&r->skas))
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/include/sysdep-x86_64/ptrace_user.h b/arch/um/include/sysdep-x86_64/ptrace_user.h
new file mode 100644
index 00000000000..31729973fb1
--- /dev/null
+++ b/arch/um/include/sysdep-x86_64/ptrace_user.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2003 PathScale, Inc.
+ *
+ * Licensed under the GPL
+ */
+
+#ifndef __SYSDEP_X86_64_PTRACE_USER_H__
+#define __SYSDEP_X86_64_PTRACE_USER_H__
+
+#define __FRAME_OFFSETS
+#include <sys/ptrace.h>
+#include <linux/ptrace.h>
+#include <asm/ptrace.h>
+#undef __FRAME_OFFSETS
+
+#define PT_INDEX(off) ((off) / sizeof(unsigned long))
+
+#define PT_SYSCALL_NR(regs) ((regs)[PT_INDEX(ORIG_RAX)])
+#define PT_SYSCALL_NR_OFFSET (ORIG_RAX)
+
+#define PT_SYSCALL_ARG1(regs) (((unsigned long *) (regs))[PT_INDEX(RDI)])
+#define PT_SYSCALL_ARG1_OFFSET (RDI)
+
+#define PT_SYSCALL_ARG2(regs) (((unsigned long *) (regs))[PT_INDEX(RSI)])
+#define PT_SYSCALL_ARG2_OFFSET (RSI)
+
+#define PT_SYSCALL_ARG3(regs) (((unsigned long *) (regs))[PT_INDEX(RDX)])
+#define PT_SYSCALL_ARG3_OFFSET (RDX)
+
+#define PT_SYSCALL_ARG4(regs) (((unsigned long *) (regs))[PT_INDEX(RCX)])
+#define PT_SYSCALL_ARG4_OFFSET (RCX)
+
+#define PT_SYSCALL_ARG5(regs) (((unsigned long *) (regs))[PT_INDEX(R8)])
+#define PT_SYSCALL_ARG5_OFFSET (R8)
+
+#define PT_SYSCALL_ARG6(regs) (((unsigned long *) (regs))[PT_INDEX(R9)])
+#define PT_SYSCALL_ARG6_OFFSET (R9)
+
+#define PT_SYSCALL_RET_OFFSET (RAX)
+
+#define PT_IP_OFFSET (RIP)
+#define PT_IP(regs) ((regs)[PT_INDEX(RIP)])
+
+#define PT_SP_OFFSET (RSP)
+#define PT_SP(regs) ((regs)[PT_INDEX(RSP)])
+
+#define PT_ORIG_RAX_OFFSET (ORIG_RAX)
+#define PT_ORIG_RAX(regs) ((regs)[PT_INDEX(ORIG_RAX)])
+
+/* x86_64 FC3 doesn't define this in /usr/include/linux/ptrace.h even though
+ * it's defined in the kernel's include/linux/ptrace.h. Additionally, use the
+ * 2.4 name and value for 2.4 host compatibility.
+ */
+#ifndef PTRACE_OLDSETOPTIONS
+#define PTRACE_OLDSETOPTIONS 21
+#endif
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/include/sysdep-x86_64/sigcontext.h b/arch/um/include/sysdep-x86_64/sigcontext.h
new file mode 100644
index 00000000000..1e38a54ff4c
--- /dev/null
+++ b/arch/um/include/sysdep-x86_64/sigcontext.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2003 PathScale, Inc.
+ *
+ * Licensed under the GPL
+ */
+
+#ifndef __SYSDEP_X86_64_SIGCONTEXT_H
+#define __SYSDEP_X86_64_SIGCONTEXT_H
+
+#include <sysdep/sc.h>
+
+#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
+
+#define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
+#define SC_SET_SYSCALL_RETURN(sc, result) SC_RAX(sc) = (result)
+
+#define SC_FAULT_ADDR(sc) SC_CR2(sc)
+#define SC_FAULT_TYPE(sc) SC_ERR(sc)
+
+#define FAULT_WRITE(err) ((err) & 2)
+
+#define SC_FAULT_WRITE(sc) FAULT_WRITE(SC_FAULT_TYPE(sc))
+
+#define SC_TRAP_TYPE(sc) SC_TRAPNO(sc)
+
+/* ptrace expects that, at the start of a system call, %eax contains
+ * -ENOSYS, so this makes it so.
+ */
+
+#define SC_START_SYSCALL(sc) do SC_RAX(sc) = -ENOSYS; while(0)
+
+#define SEGV_IS_FIXABLE(trap) ((trap) == 14)
+#define SC_SEGV_IS_FIXABLE(sc) SEGV_IS_FIXABLE(SC_TRAP_TYPE(sc))
+
+extern unsigned long *sc_sigmask(void *sc_ptr);
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
+
diff --git a/arch/um/include/sysdep-x86_64/signal.h b/arch/um/include/sysdep-x86_64/signal.h
new file mode 100644
index 00000000000..e5e52756fab
--- /dev/null
+++ b/arch/um/include/sysdep-x86_64/signal.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2004 PathScale, Inc
+ * Licensed under the GPL
+ */
+
+#ifndef __X86_64_SIGNAL_H_
+#define __X86_64_SIGNAL_H_
+
+#define ARCH_GET_SIGCONTEXT(sc, sig_addr) \
+	do { \
+		struct ucontext *__uc; \
+		asm("movq %%rdx, %0" : "=r" (__uc)); \
+		sc = (struct sigcontext *) &__uc->uc_mcontext; \
+	} while(0)
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/include/sysdep-x86_64/syscalls.h b/arch/um/include/sysdep-x86_64/syscalls.h
new file mode 100644
index 00000000000..b187a4157ff
--- /dev/null
+++ b/arch/um/include/sysdep-x86_64/syscalls.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2003 PathScale, Inc.
+ *
+ * Licensed under the GPL
+ */
+
+#ifndef __SYSDEP_X86_64_SYSCALLS_H__
+#define __SYSDEP_X86_64_SYSCALLS_H__
+
+#include <linux/msg.h>
+#include <linux/shm.h>
+
+typedef long syscall_handler_t(void);
+
+extern syscall_handler_t *ia32_sys_call_table[];
+
+#define EXECUTE_SYSCALL(syscall, regs) \
+	(((long (*)(long, long, long, long, long, long)) \
+	  (*sys_call_table[syscall]))(UPT_SYSCALL_ARG1(&regs->regs), \
+		 		      UPT_SYSCALL_ARG2(&regs->regs), \
+				      UPT_SYSCALL_ARG3(&regs->regs), \
+				      UPT_SYSCALL_ARG4(&regs->regs), \
+				      UPT_SYSCALL_ARG5(&regs->regs), \
+				      UPT_SYSCALL_ARG6(&regs->regs)))
+
+extern long old_mmap(unsigned long addr, unsigned long len,
+		     unsigned long prot, unsigned long flags,
+		     unsigned long fd, unsigned long pgoff);
+extern syscall_handler_t wrap_sys_shmat;
+extern syscall_handler_t sys_modify_ldt;
+extern syscall_handler_t sys_arch_prctl;
+
+#define ARCH_SYSCALLS \
+	[ __NR_mmap ] = (syscall_handler_t *) old_mmap, \
+	[ __NR_select ] = (syscall_handler_t *) sys_select, \
+	[ __NR_mincore ] = (syscall_handler_t *) sys_mincore, \
+	[ __NR_madvise ] = (syscall_handler_t *) sys_madvise, \
+	[ __NR_shmget ] = (syscall_handler_t *) sys_shmget, \
+	[ __NR_shmat ] = (syscall_handler_t *) wrap_sys_shmat, \
+	[ __NR_shmctl ] = (syscall_handler_t *) sys_shmctl, \
+	[ __NR_semop ] = (syscall_handler_t *) sys_semop, \
+	[ __NR_semget ] = (syscall_handler_t *) sys_semget, \
+	[ __NR_semctl ] = (syscall_handler_t *) sys_semctl, \
+	[ __NR_shmdt ] = (syscall_handler_t *) sys_shmdt, \
+	[ __NR_msgget ] = (syscall_handler_t *) sys_msgget, \
+	[ __NR_msgsnd ] = (syscall_handler_t *) sys_msgsnd, \
+	[ __NR_msgrcv ] = (syscall_handler_t *) sys_msgrcv, \
+	[ __NR_msgctl ] = (syscall_handler_t *) sys_msgctl, \
+	[ __NR_pivot_root ] = (syscall_handler_t *) sys_pivot_root, \
+	[ __NR_tuxcall ] = (syscall_handler_t *) sys_ni_syscall, \
+	[ __NR_security ] = (syscall_handler_t *) sys_ni_syscall, \
+	[ __NR_epoll_ctl_old ] = (syscall_handler_t *) sys_ni_syscall, \
+	[ __NR_epoll_wait_old ] = (syscall_handler_t *) sys_ni_syscall, \
+	[ __NR_modify_ldt ] = (syscall_handler_t *) sys_modify_ldt, \
+	[ __NR_arch_prctl ] = (syscall_handler_t *) sys_arch_prctl, \
+	[ __NR_socket ] = (syscall_handler_t *) sys_socket, \
+	[ __NR_connect ] = (syscall_handler_t *) sys_connect, \
+	[ __NR_accept ] = (syscall_handler_t *) sys_accept, \
+	[ __NR_recvfrom ] = (syscall_handler_t *) sys_recvfrom, \
+	[ __NR_recvmsg ] = (syscall_handler_t *) sys_recvmsg, \
+	[ __NR_sendmsg ] = (syscall_handler_t *) sys_sendmsg, \
+	[ __NR_bind ] = (syscall_handler_t *) sys_bind, \
+	[ __NR_listen ] = (syscall_handler_t *) sys_listen, \
+	[ __NR_getsockname ] = (syscall_handler_t *) sys_getsockname, \
+	[ __NR_getpeername ] = (syscall_handler_t *) sys_getpeername, \
+	[ __NR_socketpair ] = (syscall_handler_t *) sys_socketpair, \
+	[ __NR_sendto ] = (syscall_handler_t *) sys_sendto, \
+	[ __NR_shutdown ] = (syscall_handler_t *) sys_shutdown, \
+	[ __NR_setsockopt ] = (syscall_handler_t *) sys_setsockopt, \
+	[ __NR_getsockopt ] = (syscall_handler_t *) sys_getsockopt, \
+	[ __NR_iopl ] = (syscall_handler_t *) sys_ni_syscall, \
+	[ __NR_set_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \
+	[ __NR_get_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \
+	[ __NR_semtimedop ] = (syscall_handler_t *) sys_semtimedop, \
+	[ 251 ] = (syscall_handler_t *) sys_ni_syscall,
+
+#define LAST_ARCH_SYSCALL 251
+#define NR_syscalls 1024
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */