arm64: ELF definitions
authorCatalin Marinas <catalin.marinas@arm.com>
Mon, 5 Mar 2012 11:49:30 +0000 (11:49 +0000)
committerCatalin Marinas <catalin.marinas@arm.com>
Mon, 17 Sep 2012 12:42:07 +0000 (13:42 +0100)
This patch adds definitions for the ELF format, including personality
personality setting and EXEC_PAGESIZE. The are only two hwcap
definitions for 64-bit applications - HWCAP_FP and HWCAP_ASIMD.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
arch/arm64/include/asm/auxvec.h [new file with mode: 0644]
arch/arm64/include/asm/elf.h [new file with mode: 0644]
arch/arm64/include/asm/hwcap.h [new file with mode: 0644]
arch/arm64/include/asm/param.h [new file with mode: 0644]
arch/arm64/include/asm/shmparam.h [new file with mode: 0644]

diff --git a/arch/arm64/include/asm/auxvec.h b/arch/arm64/include/asm/auxvec.h
new file mode 100644 (file)
index 0000000..22d6d88
--- /dev/null
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2012 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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_AUXVEC_H
+#define __ASM_AUXVEC_H
+
+/* vDSO location */
+#define AT_SYSINFO_EHDR        33
+
+#endif
diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h
new file mode 100644 (file)
index 0000000..cf28464
--- /dev/null
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2012 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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_ELF_H
+#define __ASM_ELF_H
+
+#include <asm/hwcap.h>
+
+/*
+ * ELF register definitions..
+ */
+#include <asm/ptrace.h>
+#include <asm/user.h>
+
+typedef unsigned long elf_greg_t;
+typedef unsigned long elf_freg_t[3];
+
+#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;
+
+#define EM_AARCH64             183
+
+/*
+ * AArch64 static relocation types.
+ */
+
+/* Miscellaneous. */
+#define R_ARM_NONE                     0
+#define R_AARCH64_NONE                 256
+
+/* Data. */
+#define R_AARCH64_ABS64                        257
+#define R_AARCH64_ABS32                        258
+#define R_AARCH64_ABS16                        259
+#define R_AARCH64_PREL64               260
+#define R_AARCH64_PREL32               261
+#define R_AARCH64_PREL16               262
+
+/* Instructions. */
+#define R_AARCH64_MOVW_UABS_G0         263
+#define R_AARCH64_MOVW_UABS_G0_NC      264
+#define R_AARCH64_MOVW_UABS_G1         265
+#define R_AARCH64_MOVW_UABS_G1_NC      266
+#define R_AARCH64_MOVW_UABS_G2         267
+#define R_AARCH64_MOVW_UABS_G2_NC      268
+#define R_AARCH64_MOVW_UABS_G3         269
+
+#define R_AARCH64_MOVW_SABS_G0         270
+#define R_AARCH64_MOVW_SABS_G1         271
+#define R_AARCH64_MOVW_SABS_G2         272
+
+#define R_AARCH64_LD_PREL_LO19         273
+#define R_AARCH64_ADR_PREL_LO21                274
+#define R_AARCH64_ADR_PREL_PG_HI21     275
+#define R_AARCH64_ADR_PREL_PG_HI21_NC  276
+#define R_AARCH64_ADD_ABS_LO12_NC      277
+#define R_AARCH64_LDST8_ABS_LO12_NC    278
+
+#define R_AARCH64_TSTBR14              279
+#define R_AARCH64_CONDBR19             280
+#define R_AARCH64_JUMP26               282
+#define R_AARCH64_CALL26               283
+#define R_AARCH64_LDST16_ABS_LO12_NC   284
+#define R_AARCH64_LDST32_ABS_LO12_NC   285
+#define R_AARCH64_LDST64_ABS_LO12_NC   286
+#define R_AARCH64_LDST128_ABS_LO12_NC  299
+
+#define R_AARCH64_MOVW_PREL_G0         287
+#define R_AARCH64_MOVW_PREL_G0_NC      288
+#define R_AARCH64_MOVW_PREL_G1         289
+#define R_AARCH64_MOVW_PREL_G1_NC      290
+#define R_AARCH64_MOVW_PREL_G2         291
+#define R_AARCH64_MOVW_PREL_G2_NC      292
+#define R_AARCH64_MOVW_PREL_G3         293
+
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS      ELFCLASS64
+#define ELF_DATA       ELFDATA2LSB
+#define ELF_ARCH       EM_AARCH64
+
+#define ELF_PLATFORM_SIZE      16
+#define ELF_PLATFORM           ("aarch64")
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x)              ((x)->e_machine == EM_AARCH64)
+
+#define elf_read_implies_exec(ex,stk)  (stk != EXSTACK_DISABLE_X)
+
+#define CORE_DUMP_USE_REGSET
+#define ELF_EXEC_PAGESIZE      PAGE_SIZE
+
+/*
+ * 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.
+ */
+extern unsigned long randomize_et_dyn(unsigned long base);
+#define ELF_ET_DYN_BASE        (randomize_et_dyn(2 * TASK_SIZE_64 / 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)->regs[0] = 0
+
+#define SET_PERSONALITY(ex)            clear_thread_flag(TIF_32BIT);
+
+#define ARCH_DLINFO                                                    \
+do {                                                                   \
+       NEW_AUX_ENT(AT_SYSINFO_EHDR,                                    \
+                   (elf_addr_t)current->mm->context.vdso);             \
+} while (0)
+
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
+struct linux_binprm;
+extern int arch_setup_additional_pages(struct linux_binprm *bprm,
+                                      int uses_interp);
+
+/* 1GB of VA */
+#ifdef CONFIG_COMPAT
+#define STACK_RND_MASK                 (test_thread_flag(TIF_32BIT) ? \
+                                               0x7ff >> (PAGE_SHIFT - 12) : \
+                                               0x3ffff >> (PAGE_SHIFT - 12))
+#else
+#define STACK_RND_MASK                 (0x3ffff >> (PAGE_SHIFT - 12))
+#endif
+
+struct mm_struct;
+extern unsigned long arch_randomize_brk(struct mm_struct *mm);
+#define arch_randomize_brk arch_randomize_brk
+
+#ifdef CONFIG_COMPAT
+#define EM_ARM                         40
+#define COMPAT_ELF_PLATFORM            ("v8l")
+
+#define COMPAT_ELF_ET_DYN_BASE         (randomize_et_dyn(2 * TASK_SIZE_32 / 3))
+
+/* AArch32 registers. */
+#define COMPAT_ELF_NGREG               18
+typedef unsigned int                   compat_elf_greg_t;
+typedef compat_elf_greg_t              compat_elf_gregset_t[COMPAT_ELF_NGREG];
+
+/* AArch32 EABI. */
+#define EF_ARM_EABI_MASK               0xff000000
+#define compat_elf_check_arch(x)       (((x)->e_machine == EM_ARM) && \
+                                        ((x)->e_flags & EF_ARM_EABI_MASK))
+
+#define compat_start_thread            compat_start_thread
+#define COMPAT_SET_PERSONALITY(ex)     set_thread_flag(TIF_32BIT);
+#define COMPAT_ARCH_DLINFO
+extern int aarch32_setup_vectors_page(struct linux_binprm *bprm,
+                                     int uses_interp);
+#define compat_arch_setup_additional_pages \
+                                       aarch32_setup_vectors_page
+
+#endif /* CONFIG_COMPAT */
+
+#endif
diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h
new file mode 100644 (file)
index 0000000..f8190ba
--- /dev/null
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2012 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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_HWCAP_H
+#define __ASM_HWCAP_H
+
+/*
+ * HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP
+ */
+#define HWCAP_FP               (1 << 0)
+#define HWCAP_ASIMD            (1 << 1)
+
+#define COMPAT_HWCAP_HALF      (1 << 1)
+#define COMPAT_HWCAP_THUMB     (1 << 2)
+#define COMPAT_HWCAP_FAST_MULT (1 << 4)
+#define COMPAT_HWCAP_VFP       (1 << 6)
+#define COMPAT_HWCAP_EDSP      (1 << 7)
+#define COMPAT_HWCAP_NEON      (1 << 12)
+#define COMPAT_HWCAP_VFPv3     (1 << 13)
+#define COMPAT_HWCAP_TLS       (1 << 15)
+#define COMPAT_HWCAP_VFPv4     (1 << 16)
+#define COMPAT_HWCAP_IDIVA     (1 << 17)
+#define COMPAT_HWCAP_IDIVT     (1 << 18)
+#define COMPAT_HWCAP_IDIV      (COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT)
+
+#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
+/*
+ * This yields a mask that user programs can use to figure out what
+ * instruction set this cpu supports.
+ */
+#define ELF_HWCAP              (elf_hwcap)
+#define COMPAT_ELF_HWCAP       (COMPAT_HWCAP_HALF|COMPAT_HWCAP_THUMB|\
+                                COMPAT_HWCAP_FAST_MULT|COMPAT_HWCAP_EDSP|\
+                                COMPAT_HWCAP_TLS|COMPAT_HWCAP_VFP|\
+                                COMPAT_HWCAP_VFPv3|COMPAT_HWCAP_VFPv4|\
+                                COMPAT_HWCAP_NEON|COMPAT_HWCAP_IDIV)
+
+extern unsigned int elf_hwcap;
+#endif
+
+#endif
diff --git a/arch/arm64/include/asm/param.h b/arch/arm64/include/asm/param.h
new file mode 100644 (file)
index 0000000..8e3a281
--- /dev/null
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2012 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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_PARAM_H
+#define __ASM_PARAM_H
+
+#define EXEC_PAGESIZE  65536
+
+#include <asm-generic/param.h>
+
+#endif
diff --git a/arch/arm64/include/asm/shmparam.h b/arch/arm64/include/asm/shmparam.h
new file mode 100644 (file)
index 0000000..4df608a
--- /dev/null
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2012 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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_SHMPARAM_H
+#define __ASM_SHMPARAM_H
+
+/*
+ * For IPC syscalls from compat tasks, we need to use the legacy 16k
+ * alignment value. Since we don't have aliasing D-caches, the rest of
+ * the time we can safely use PAGE_SIZE.
+ */
+#define COMPAT_SHMLBA  0x4000
+
+#include <asm-generic/shmparam.h>
+
+#endif /* __ASM_SHMPARAM_H */