aboutsummaryrefslogtreecommitdiff
path: root/arch/mn10300/include/asm/elf.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mn10300/include/asm/elf.h')
-rw-r--r--arch/mn10300/include/asm/elf.h147
1 files changed, 147 insertions, 0 deletions
diff --git a/arch/mn10300/include/asm/elf.h b/arch/mn10300/include/asm/elf.h
new file mode 100644
index 00000000000..bf09f8bb392
--- /dev/null
+++ b/arch/mn10300/include/asm/elf.h
@@ -0,0 +1,147 @@
+/* MN10300 ELF constant and register definitions
+ *
+ * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_ELF_H
+#define _ASM_ELF_H
+
+#include <linux/utsname.h>
+#include <asm/ptrace.h>
+#include <asm/user.h>
+
+/*
+ * AM33 relocations
+ */
+#define R_MN10300_NONE 0 /* No reloc. */
+#define R_MN10300_32 1 /* Direct 32 bit. */
+#define R_MN10300_16 2 /* Direct 16 bit. */
+#define R_MN10300_8 3 /* Direct 8 bit. */
+#define R_MN10300_PCREL32 4 /* PC-relative 32-bit. */
+#define R_MN10300_PCREL16 5 /* PC-relative 16-bit signed. */
+#define R_MN10300_PCREL8 6 /* PC-relative 8-bit signed. */
+#define R_MN10300_24 9 /* Direct 24 bit. */
+#define R_MN10300_RELATIVE 23 /* Adjust by program base. */
+
+/*
+ * ELF register definitions..
+ */
+typedef unsigned long elf_greg_t;
+
+#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+#define ELF_NFPREG 32
+typedef float elf_fpreg_t;
+
+typedef struct {
+ elf_fpreg_t fpregs[ELF_NFPREG];
+ u_int32_t fpcr;
+} elf_fpregset_t;
+
+extern int dump_fpu(struct pt_regs *, 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_CYGNUS_MN10300) || \
+ ((x)->e_machine == EM_MN10300))
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA ELFDATA2LSB
+#define ELF_ARCH EM_MN10300
+
+/*
+ * ELF process initialiser
+ */
+#define ELF_PLAT_INIT(_r, load_addr) \
+do { \
+ struct pt_regs *_ur = current->thread.uregs; \
+ _ur->a3 = 0; _ur->a2 = 0; _ur->d3 = 0; _ur->d2 = 0; \
+ _ur->mcvf = 0; _ur->mcrl = 0; _ur->mcrh = 0; _ur->mdrq = 0; \
+ _ur->e1 = 0; _ur->e0 = 0; _ur->e7 = 0; _ur->e6 = 0; \
+ _ur->e5 = 0; _ur->e4 = 0; _ur->e3 = 0; _ur->e2 = 0; \
+ _ur->lar = 0; _ur->lir = 0; _ur->mdr = 0; \
+ _ur->a1 = 0; _ur->a0 = 0; _ur->d1 = 0; _ur->d0 = 0; \
+} while (0)
+
+#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.
+ * - must clear the VMALLOC area
+ */
+#define ELF_ET_DYN_BASE 0x04000000
+
+/*
+ * regs is struct pt_regs, pr_reg is elf_gregset_t (which is
+ * now struct user_regs, they are different)
+ * - ELF_CORE_COPY_REGS has been guessed, and may be wrong
+ */
+#define ELF_CORE_COPY_REGS(pr_reg, regs) \
+do { \
+ pr_reg[0] = regs->a3; \
+ pr_reg[1] = regs->a2; \
+ pr_reg[2] = regs->d3; \
+ pr_reg[3] = regs->d2; \
+ pr_reg[4] = regs->mcvf; \
+ pr_reg[5] = regs->mcrl; \
+ pr_reg[6] = regs->mcrh; \
+ pr_reg[7] = regs->mdrq; \
+ pr_reg[8] = regs->e1; \
+ pr_reg[9] = regs->e0; \
+ pr_reg[10] = regs->e7; \
+ pr_reg[11] = regs->e6; \
+ pr_reg[12] = regs->e5; \
+ pr_reg[13] = regs->e4; \
+ pr_reg[14] = regs->e3; \
+ pr_reg[15] = regs->e2; \
+ pr_reg[16] = regs->sp; \
+ pr_reg[17] = regs->lar; \
+ pr_reg[18] = regs->lir; \
+ pr_reg[19] = regs->mdr; \
+ pr_reg[20] = regs->a1; \
+ pr_reg[21] = regs->a0; \
+ pr_reg[22] = regs->d1; \
+ pr_reg[23] = regs->d0; \
+ pr_reg[24] = regs->orig_d0; \
+ pr_reg[25] = regs->epsw; \
+ pr_reg[26] = regs->pc; \
+} while (0);
+
+/*
+ * This yields a mask that user programs can use to figure out what
+ * instruction set this CPU supports. This could be done in user space,
+ * but it's not easy, and we've already done it here.
+ */
+#define ELF_HWCAP (0)
+
+/*
+ * 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 the moment, we have only optimizations for the Intel generations,
+ * but that could change...
+ */
+#define ELF_PLATFORM (NULL)
+
+#ifdef __KERNEL__
+#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
+#endif
+
+#endif /* _ASM_ELF_H */