Merge with /shiny/git/linux-2.6/.git

2 files changed, 78 insertions, 0 deletions

diff --git a/arch/um/include/sysdep-i386/ptrace_user.h b/arch/um/include/sysdep-i386/ptrace_user.h
index eca8066e7a4..899aa4b2a78 100644
--- a/arch/um/include/sysdep-i386/ptrace_user.h
+++ b/arch/um/include/sysdep-i386/ptrace_user.h
@@ -20,11 +20,24 @@
 #define PT_SYSCALL_ARG3_OFFSET PT_OFFSET(EDX)
 #define PT_SYSCALL_ARG4_OFFSET PT_OFFSET(ESI)
 #define PT_SYSCALL_ARG5_OFFSET PT_OFFSET(EDI)
+#define PT_SYSCALL_ARG6_OFFSET PT_OFFSET(EBP)
 
 #define PT_SYSCALL_RET_OFFSET PT_OFFSET(EAX)
 
+#define REGS_SYSCALL_NR EAX /* This is used before a system call */
+#define REGS_SYSCALL_ARG1 EBX
+#define REGS_SYSCALL_ARG2 ECX
+#define REGS_SYSCALL_ARG3 EDX
+#define REGS_SYSCALL_ARG4 ESI
+#define REGS_SYSCALL_ARG5 EDI
+#define REGS_SYSCALL_ARG6 EBP
+
+#define REGS_IP_INDEX EIP
+#define REGS_SP_INDEX UESP
+
 #define PT_IP_OFFSET PT_OFFSET(EIP)
 #define PT_IP(regs) ((regs)[EIP])
+#define PT_SP_OFFSET PT_OFFSET(UESP)
 #define PT_SP(regs) ((regs)[UESP])
 
 #ifndef FRAME_SIZE
diff --git a/arch/um/include/sysdep-i386/stub.h b/arch/um/include/sysdep-i386/stub.h
new file mode 100644
index 00000000000..d3699fe1c61
--- /dev/null
+++ b/arch/um/include/sysdep-i386/stub.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __SYSDEP_STUB_H
+#define __SYSDEP_STUB_H
+
+#include <asm/ptrace.h>
+#include <asm/unistd.h>
+
+extern void stub_segv_handler(int sig);
+extern void stub_clone_handler(void);
+
+#define STUB_SYSCALL_RET EAX
+#define STUB_MMAP_NR __NR_mmap2
+#define MMAP_OFFSET(o) ((o) >> PAGE_SHIFT)
+
+static inline long stub_syscall2(long syscall, long arg1, long arg2)
+{
+	long ret;
+
+	__asm__("movl %0, %%ecx; " : : "g" (arg2) : "%ecx");
+	__asm__("movl %0, %%ebx; " : : "g" (arg1) : "%ebx");
+	__asm__("movl %0, %%eax; " : : "g" (syscall) : "%eax");
+	__asm__("int $0x80;" : : : "%eax");
+	__asm__ __volatile__("movl %%eax, %0; " : "=g" (ret) :);
+	return(ret);
+}
+
+static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3)
+{
+	__asm__("movl %0, %%edx; " : : "g" (arg3) : "%edx");
+	return(stub_syscall2(syscall, arg1, arg2));
+}
+
+static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3,
+				 long arg4)
+{
+	__asm__("movl %0, %%esi; " : : "g" (arg4) : "%esi");
+	return(stub_syscall3(syscall, arg1, arg2, arg3));
+}
+
+static inline long stub_syscall6(long syscall, long arg1, long arg2, long arg3,
+				 long arg4, long arg5, long arg6)
+{
+	long ret;
+	__asm__("movl %0, %%eax; " : : "g" (syscall) : "%eax");
+	__asm__("movl %0, %%ebx; " : : "g" (arg1) : "%ebx");
+	__asm__("movl %0, %%ecx; " : : "g" (arg2) : "%ecx");
+	__asm__("movl %0, %%edx; " : : "g" (arg3) : "%edx");
+	__asm__("movl %0, %%esi; " : : "g" (arg4) : "%esi");
+	__asm__("movl %0, %%edi; " : : "g" (arg5) : "%edi");
+	__asm__ __volatile__("pushl %%ebp ; movl %1, %%ebp; "
+		"int $0x80; popl %%ebp ; "
+		"movl %%eax, %0; " : "=g" (ret) : "g" (arg6) : "%eax");
+	return(ret);
+}
+
+static inline void trap_myself(void)
+{
+	__asm("int3");
+}
+
+#endif