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!

1 files changed, 66 insertions, 0 deletions

diff --git a/arch/um/os-Linux/elf_aux.c b/arch/um/os-Linux/elf_aux.c
new file mode 100644
index 000000000000..9aee0b62ebca
--- /dev/null
+++ b/arch/um/os-Linux/elf_aux.c
@@ -0,0 +1,66 @@
+/*
+ *  arch/um/kernel/elf_aux.c
+ *
+ *  Scan the Elf auxiliary vector provided by the host to extract
+ *  information about vsyscall-page, etc.
+ *
+ *  Copyright (C) 2004 Fujitsu Siemens Computers GmbH
+ *  Author: Bodo Stroesser (bodo.stroesser@fujitsu-siemens.com)
+ */
+#include <elf.h>
+#include <stddef.h>
+#include "init.h"
+#include "elf_user.h"
+
+#if ELF_CLASS == ELFCLASS32
+typedef Elf32_auxv_t elf_auxv_t;
+#else
+typedef Elf64_auxv_t elf_auxv_t;
+#endif
+
+char * elf_aux_platform;
+long elf_aux_hwcap;
+
+unsigned long vsyscall_ehdr;
+unsigned long vsyscall_end;
+
+unsigned long __kernel_vsyscall;
+
+__init void scan_elf_aux( char **envp)
+{
+        long page_size = 0;
+        elf_auxv_t * auxv;
+
+        while ( *envp++ != NULL) ;
+
+        for ( auxv = (elf_auxv_t *)envp; auxv->a_type != AT_NULL; auxv++) {
+                switch ( auxv->a_type ) {
+                        case AT_SYSINFO:
+                                __kernel_vsyscall = auxv->a_un.a_val;
+                                break;
+                        case AT_SYSINFO_EHDR:
+                                vsyscall_ehdr = auxv->a_un.a_val;
+                                break;
+                        case AT_HWCAP:
+                                elf_aux_hwcap = auxv->a_un.a_val;
+                                break;
+                        case AT_PLATFORM:
+                                elf_aux_platform = auxv->a_un.a_ptr;
+                                break;
+                        case AT_PAGESZ:
+                                page_size = auxv->a_un.a_val;
+                                break;
+                }
+        }
+        if ( ! __kernel_vsyscall || ! vsyscall_ehdr ||
+             ! elf_aux_hwcap || ! elf_aux_platform ||
+             ! page_size || (vsyscall_ehdr % page_size) ) {
+                __kernel_vsyscall = 0;
+                vsyscall_ehdr = 0;
+                elf_aux_hwcap = 0;
+                elf_aux_platform = "i586";
+        }
+        else {
+                vsyscall_end = vsyscall_ehdr + page_size;
+        }
+}