1 files changed, 133 insertions, 0 deletions

diff --git a/include/asm-arm/elf.h b/include/asm-arm/elf.h
new file mode 100644
index 000000000000..cbceacbe5afa
--- /dev/null
+++ b/include/asm-arm/elf.h
@@ -0,0 +1,133 @@
+#ifndef __ASMARM_ELF_H
+#define __ASMARM_ELF_H
+
+#include <linux/config.h>
+
+/*
+ * ELF register definitions..
+ */
+
+#include <asm/ptrace.h>
+#include <asm/user.h>
+#include <asm/procinfo.h>
+
+typedef unsigned long elf_greg_t;
+typedef unsigned long elf_freg_t[3];
+
+#define EM_ARM  40
+#define EF_ARM_APCS26 0x08
+#define EF_ARM_SOFT_FLOAT 0x200
+#define EF_ARM_EABI_MASK 0xFF000000
+
+#define R_ARM_NONE      0
+#define R_ARM_PC24      1
+#define R_ARM_ABS32     2
+
+#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef struct user_fp elf_fpregset_t;
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x) ( ((x)->e_machine == EM_ARM) && (ELF_PROC_OK((x))) )
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS       ELFCLASS32
+#ifdef __ARMEB__
+#define ELF_DATA        ELFDATA2MSB;
+#else
+#define ELF_DATA        ELFDATA2LSB;
+#endif
+#define ELF_ARCH        EM_ARM
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE       4096
+
+/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+   use of this is to invoke "./ld.so someprog" to test out a new version of
+   the loader.  We need to make sure that it is out of the way of the program
+   that it will "exec", and that there is sufficient room for the brk.  */
+
+#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
+
+/* When the program starts, a1 contains a pointer to a function to be 
+   registered with atexit, as per the SVR4 ABI.  A value of 0 means we 
+   have no such handler.  */
+#define ELF_PLAT_INIT(_r, load_addr)    (_r)->ARM_r0 = 0
+
+/* This yields a mask that user programs can use to figure out what
+   instruction set this cpu supports. */
+
+#define ELF_HWCAP       (elf_hwcap)
+
+/* This yields a string that ld.so will use to load implementation
+   specific libraries for optimization.  This is more specific in
+   intent than poking at uname or /proc/cpuinfo. */
+
+/* For now we just provide a fairly general string that describes the
+   processor family.  This could be made more specific later if someone
+   implemented optimisations that require it.  26-bit CPUs give you
+   "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
+   supported).  32-bit CPUs give you "v3[lb]" for anything based on an
+   ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
+   core.  */
+
+#define ELF_PLATFORM_SIZE 8
+extern char elf_platform[];
+#define ELF_PLATFORM    (elf_platform)
+
+#ifdef __KERNEL__
+
+/*
+ * 32-bit code is always OK.  Some cpus can do 26-bit, some can't.
+ */
+#define ELF_PROC_OK(x)  (ELF_THUMB_OK(x) && ELF_26BIT_OK(x))
+
+#define ELF_THUMB_OK(x) \
+        (( (elf_hwcap & HWCAP_THUMB) && ((x)->e_entry & 1) == 1) || \
+         ((x)->e_entry & 3) == 0)
+
+#define ELF_26BIT_OK(x) \
+        (( (elf_hwcap & HWCAP_26BIT) && (x)->e_flags & EF_ARM_APCS26) || \
+          ((x)->e_flags & EF_ARM_APCS26) == 0)
+
+#ifndef CONFIG_IWMMXT
+
+/* Old NetWinder binaries were compiled in such a way that the iBCS
+   heuristic always trips on them.  Until these binaries become uncommon
+   enough not to care, don't trust the `ibcs' flag here.  In any case
+   there is no other ELF system currently supported by iBCS.
+   @@ Could print a warning message to encourage users to upgrade.  */
+#define SET_PERSONALITY(ex,ibcs2) \
+        set_personality(((ex).e_flags&EF_ARM_APCS26 ?PER_LINUX :PER_LINUX_32BIT))
+
+#else
+
+/*
+ * All iWMMXt capable CPUs don't support 26-bit mode.  Yet they can run
+ * legacy binaries which used to contain FPA11 floating point instructions
+ * that have always been emulated by the kernel.  PFA11 and iWMMXt overlap
+ * on coprocessor 1 space though.  We therefore must decide if given task
+ * is allowed to use CP 0 and 1 for iWMMXt, or if they should be blocked
+ * at all times for the prefetch exception handler to catch FPA11 opcodes
+ * and emulate them.  The best indication to discriminate those two cases
+ * is the SOFT_FLOAT flag in the ELF header.
+ */
+
+#define SET_PERSONALITY(ex,ibcs2) \
+do { \
+        set_personality(PER_LINUX_32BIT); \
+        if (((ex).e_flags & EF_ARM_EABI_MASK) || \
+            ((ex).e_flags & EF_ARM_SOFT_FLOAT)) \
+                set_thread_flag(TIF_USING_IWMMXT); \
+} while (0)
+
+#endif
+
+#endif
+
+#endif