nios2: ELF definitions

This patch adds definitions for the ELF format

Signed-off-by: Ley Foon Tan <lftan@altera.com>

diff --git a/arch/nios2/include/asm/elf.h b/arch/nios2/include/asm/elf.h
new file mode 100644 (file)
index 0000000..b7d655d
--- /dev/null
+++ b/arch/nios2/include/asm/elf.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _ASM_NIOS2_ELF_H
+#define _ASM_NIOS2_ELF_H
+
+#include <uapi/asm/elf.h>
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x) ((x)->e_machine == EM_ALTERA_NIOS2)
+
+#define ELF_PLAT_INIT(_r, load_addr)
+
+#define CORE_DUMP_USE_REGSET
+#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                0xD0000000UL
+
+/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
+   now struct_user_regs, they are different) */
+
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES        1
+struct linux_binprm;
+extern int arch_setup_additional_pages(struct linux_binprm *bprm,
+       int uses_interp);
+#define ELF_CORE_COPY_REGS(pr_reg, regs)                               \
+{ do {                                                                 \
+       /* Bleech. */                                                   \
+       pr_reg[0]  = regs->r8;                                          \
+       pr_reg[1]  = regs->r9;                                          \
+       pr_reg[2]  = regs->r10;                                         \
+       pr_reg[3]  = regs->r11;                                         \
+       pr_reg[4]  = regs->r12;                                         \
+       pr_reg[5]  = regs->r13;                                         \
+       pr_reg[6]  = regs->r14;                                         \
+       pr_reg[7]  = regs->r15;                                         \
+       pr_reg[8]  = regs->r1;                                          \
+       pr_reg[9]  = regs->r2;                                          \
+       pr_reg[10] = regs->r3;                                          \
+       pr_reg[11] = regs->r4;                                          \
+       pr_reg[12] = regs->r5;                                          \
+       pr_reg[13] = regs->r6;                                          \
+       pr_reg[14] = regs->r7;                                          \
+       pr_reg[15] = regs->orig_r2;                                     \
+       pr_reg[16] = regs->ra;                                          \
+       pr_reg[17] = regs->fp;                                          \
+       pr_reg[18] = regs->sp;                                          \
+       pr_reg[19] = regs->gp;                                          \
+       pr_reg[20] = regs->estatus;                                     \
+       pr_reg[21] = regs->ea;                                          \
+       pr_reg[22] = regs->orig_r7;                                     \
+       {                                                               \
+               struct switch_stack *sw = ((struct switch_stack *)regs) - 1; \
+               pr_reg[23] = sw->r16;                                   \
+               pr_reg[24] = sw->r17;                                   \
+               pr_reg[25] = sw->r18;                                   \
+               pr_reg[26] = sw->r19;                                   \
+               pr_reg[27] = sw->r20;                                   \
+               pr_reg[28] = sw->r21;                                   \
+               pr_reg[29] = sw->r22;                                   \
+               pr_reg[30] = sw->r23;                                   \
+               pr_reg[31] = sw->fp;                                    \
+               pr_reg[32] = sw->gp;                                    \
+               pr_reg[33] = sw->ra;                                    \
+       }                                                               \
+} while (0); }
+
+/* This yields a mask that user programs can use to figure out what
+   instruction set this cpu supports.  */
+
+#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.  */
+
+#define ELF_PLATFORM  (NULL)
+
+#endif /* _ASM_NIOS2_ELF_H */

diff --git a/arch/nios2/include/uapi/asm/elf.h b/arch/nios2/include/uapi/asm/elf.h
new file mode 100644 (file)
index 0000000..a5b91ae
--- /dev/null
+++ b/arch/nios2/include/uapi/asm/elf.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#ifndef _UAPI_ASM_NIOS2_ELF_H
+#define _UAPI_ASM_NIOS2_ELF_H
+
+#include <linux/ptrace.h>
+
+/* Relocation types */
+#define R_NIOS2_NONE           0
+#define R_NIOS2_S16            1
+#define R_NIOS2_U16            2
+#define R_NIOS2_PCREL16                3
+#define R_NIOS2_CALL26         4
+#define R_NIOS2_IMM5           5
+#define R_NIOS2_CACHE_OPX      6
+#define R_NIOS2_IMM6           7
+#define R_NIOS2_IMM8           8
+#define R_NIOS2_HI16           9
+#define R_NIOS2_LO16           10
+#define R_NIOS2_HIADJ16                11
+#define R_NIOS2_BFD_RELOC_32   12
+#define R_NIOS2_BFD_RELOC_16   13
+#define R_NIOS2_BFD_RELOC_8    14
+#define R_NIOS2_GPREL          15
+#define R_NIOS2_GNU_VTINHERIT  16
+#define R_NIOS2_GNU_VTENTRY    17
+#define R_NIOS2_UJMP           18
+#define R_NIOS2_CJMP           19
+#define R_NIOS2_CALLR          20
+#define R_NIOS2_ALIGN          21
+/* Keep this the last entry.  */
+#define R_NIOS2_NUM            22
+
+typedef unsigned long elf_greg_t;
+
+#define ELF_NGREG      \
+       ((sizeof(struct pt_regs) + sizeof(struct switch_stack)) /       \
+               sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef unsigned long elf_fpregset_t;
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS      ELFCLASS32
+#define ELF_DATA       ELFDATA2LSB
+#define ELF_ARCH       EM_ALTERA_NIOS2
+
+#endif /* _UAPI_ASM_NIOS2_ELF_H */