5b3040a48b
Pull tile updates from Chris Metcalf: "These are a smattering of minor changes from Tilera and other folks, mostly in the ptrace area." * git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/tile: set CORE_DUMP_USE_REGSET on tile arch/tile: implement arch_ptrace using user_regset on tile arch/tile: implement user_regset interface on tile arch/tile: clean up tile-specific PTRACE_SETOPTIONS arch/tile: provide PT_FLAGS_COMPAT value in pt_regs tile/PCI: use for_each_pci_dev to simplify the code tilegx: remove __init from pci fixup hook
175 lines
5.2 KiB
C
175 lines
5.2 KiB
C
/*
|
|
* Copyright 2010 Tilera Corporation. All Rights Reserved.
|
|
*
|
|
* 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, version 2.
|
|
*
|
|
* 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, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
#ifndef _ASM_TILE_ELF_H
|
|
#define _ASM_TILE_ELF_H
|
|
|
|
/*
|
|
* ELF register definitions.
|
|
*/
|
|
|
|
#include <arch/chip.h>
|
|
|
|
#include <linux/ptrace.h>
|
|
#include <asm/byteorder.h>
|
|
#include <asm/page.h>
|
|
|
|
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 EM_TILE64 187
|
|
#define EM_TILEPRO 188
|
|
#define EM_TILEGX 191
|
|
|
|
/* Provide a nominal data structure. */
|
|
#define ELF_NFPREG 0
|
|
typedef double elf_fpreg_t;
|
|
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
|
|
|
|
#ifdef __tilegx__
|
|
#define ELF_CLASS ELFCLASS64
|
|
#else
|
|
#define ELF_CLASS ELFCLASS32
|
|
#endif
|
|
#ifdef __BIG_ENDIAN__
|
|
#define ELF_DATA ELFDATA2MSB
|
|
#else
|
|
#define ELF_DATA ELFDATA2LSB
|
|
#endif
|
|
|
|
/*
|
|
* There seems to be a bug in how compat_binfmt_elf.c works: it
|
|
* #undefs ELF_ARCH, but it is then used in binfmt_elf.c for fill_note_info().
|
|
* Hack around this by providing an enum value of ELF_ARCH.
|
|
*/
|
|
enum { ELF_ARCH = CHIP_ELF_TYPE() };
|
|
#define ELF_ARCH ELF_ARCH
|
|
|
|
/*
|
|
* This is used to ensure we don't load something for the wrong architecture.
|
|
*/
|
|
#define elf_check_arch(x) \
|
|
((x)->e_ident[EI_CLASS] == ELF_CLASS && \
|
|
(x)->e_ident[EI_DATA] == ELF_DATA && \
|
|
(x)->e_machine == CHIP_ELF_TYPE())
|
|
|
|
/* The module loader only handles a few relocation types. */
|
|
#ifndef __tilegx__
|
|
#define R_TILE_32 1
|
|
#define R_TILE_JOFFLONG_X1 15
|
|
#define R_TILE_IMM16_X0_LO 25
|
|
#define R_TILE_IMM16_X1_LO 26
|
|
#define R_TILE_IMM16_X0_HA 29
|
|
#define R_TILE_IMM16_X1_HA 30
|
|
#else
|
|
#define R_TILEGX_64 1
|
|
#define R_TILEGX_JUMPOFF_X1 21
|
|
#define R_TILEGX_IMM16_X0_HW0 36
|
|
#define R_TILEGX_IMM16_X1_HW0 37
|
|
#define R_TILEGX_IMM16_X0_HW1 38
|
|
#define R_TILEGX_IMM16_X1_HW1 39
|
|
#define R_TILEGX_IMM16_X0_HW2_LAST 48
|
|
#define R_TILEGX_IMM16_X1_HW2_LAST 49
|
|
#endif
|
|
|
|
/* Use standard page size for core dumps. */
|
|
#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.
|
|
*/
|
|
#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
|
|
|
|
#define ELF_CORE_COPY_REGS(_dest, _regs) \
|
|
memcpy((char *) &_dest, (char *) _regs, \
|
|
sizeof(struct pt_regs));
|
|
|
|
/* No additional FP registers to copy. */
|
|
#define ELF_CORE_COPY_FPREGS(t, fpu) 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.
|
|
*/
|
|
#define ELF_PLATFORM (NULL)
|
|
|
|
extern void elf_plat_init(struct pt_regs *regs, unsigned long load_addr);
|
|
|
|
#define ELF_PLAT_INIT(_r, load_addr) elf_plat_init(_r, load_addr)
|
|
|
|
extern int dump_task_regs(struct task_struct *, elf_gregset_t *);
|
|
#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
|
|
|
|
/* Tilera Linux has no personalities currently, so no need to do anything. */
|
|
#define SET_PERSONALITY(ex) do { } while (0)
|
|
|
|
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
|
|
/* Support auto-mapping of the user interrupt vectors. */
|
|
struct linux_binprm;
|
|
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
|
|
int executable_stack);
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
#define COMPAT_ELF_PLATFORM "tilegx-m32"
|
|
|
|
/*
|
|
* "Compat" binaries have the same machine type, but 32-bit class,
|
|
* since they're not a separate machine type, but just a 32-bit
|
|
* variant of the standard 64-bit architecture.
|
|
*/
|
|
#define compat_elf_check_arch(x) \
|
|
((x)->e_ident[EI_CLASS] == ELFCLASS32 && \
|
|
(x)->e_machine == CHIP_ELF_TYPE())
|
|
|
|
#define compat_start_thread(regs, ip, usp) do { \
|
|
regs->pc = ptr_to_compat_reg((void *)(ip)); \
|
|
regs->sp = ptr_to_compat_reg((void *)(usp)); \
|
|
single_step_execve(); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Use SET_PERSONALITY to indicate compatibility via TS_COMPAT.
|
|
*/
|
|
#undef SET_PERSONALITY
|
|
#define SET_PERSONALITY(ex) \
|
|
do { \
|
|
set_personality(PER_LINUX | (current->personality & (~PER_MASK))); \
|
|
current_thread_info()->status &= ~TS_COMPAT; \
|
|
} while (0)
|
|
#define COMPAT_SET_PERSONALITY(ex) \
|
|
do { \
|
|
set_personality(PER_LINUX | (current->personality & (~PER_MASK))); \
|
|
current_thread_info()->status |= TS_COMPAT; \
|
|
} while (0)
|
|
|
|
#define COMPAT_ELF_ET_DYN_BASE (0xffffffff / 3 * 2)
|
|
|
|
#endif /* CONFIG_COMPAT */
|
|
|
|
#define CORE_DUMP_USE_REGSET
|
|
|
|
#endif /* _ASM_TILE_ELF_H */
|