mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 21:02:19 +00:00
21440cf04a
This adds some preliminary support for the SH-X2 MMU, used by newer SH-4A parts (particularly SH7785). This MMU implements a 'compat' mode with SH-X MMUs and an 'extended' mode for SH-X2 extended features. Extended features include additional page sizes (8kB, 4MB, 64MB), as well as the addition of page execute permissions. The extended mode attributes are placed in a second data array, which requires us to switch to 64-bit PTEs when in X2 mode. With the addition of the exec perms, we also overhaul the mmap prots somewhat, now that it's possible to handle them more intelligently. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
#ifndef __ASM_SH_ELF_H
|
|
#define __ASM_SH_ELF_H
|
|
|
|
#include <asm/auxvec.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/user.h>
|
|
|
|
/* SH relocation types */
|
|
#define R_SH_NONE 0
|
|
#define R_SH_DIR32 1
|
|
#define R_SH_REL32 2
|
|
#define R_SH_DIR8WPN 3
|
|
#define R_SH_IND12W 4
|
|
#define R_SH_DIR8WPL 5
|
|
#define R_SH_DIR8WPZ 6
|
|
#define R_SH_DIR8BP 7
|
|
#define R_SH_DIR8W 8
|
|
#define R_SH_DIR8L 9
|
|
#define R_SH_SWITCH16 25
|
|
#define R_SH_SWITCH32 26
|
|
#define R_SH_USES 27
|
|
#define R_SH_COUNT 28
|
|
#define R_SH_ALIGN 29
|
|
#define R_SH_CODE 30
|
|
#define R_SH_DATA 31
|
|
#define R_SH_LABEL 32
|
|
#define R_SH_SWITCH8 33
|
|
#define R_SH_GNU_VTINHERIT 34
|
|
#define R_SH_GNU_VTENTRY 35
|
|
#define R_SH_TLS_GD_32 144
|
|
#define R_SH_TLS_LD_32 145
|
|
#define R_SH_TLS_LDO_32 146
|
|
#define R_SH_TLS_IE_32 147
|
|
#define R_SH_TLS_LE_32 148
|
|
#define R_SH_TLS_DTPMOD32 149
|
|
#define R_SH_TLS_DTPOFF32 150
|
|
#define R_SH_TLS_TPOFF32 151
|
|
#define R_SH_GOT32 160
|
|
#define R_SH_PLT32 161
|
|
#define R_SH_COPY 162
|
|
#define R_SH_GLOB_DAT 163
|
|
#define R_SH_JMP_SLOT 164
|
|
#define R_SH_RELATIVE 165
|
|
#define R_SH_GOTOFF 166
|
|
#define R_SH_GOTPC 167
|
|
/* Keep this the last entry. */
|
|
#define R_SH_NUM 256
|
|
|
|
/*
|
|
* 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];
|
|
|
|
typedef struct user_fpu_struct 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_SH )
|
|
|
|
/*
|
|
* These are used to set parameters in the core dumps.
|
|
*/
|
|
#define ELF_CLASS ELFCLASS32
|
|
#ifdef __LITTLE_ENDIAN__
|
|
#define ELF_DATA ELFDATA2LSB
|
|
#else
|
|
#define ELF_DATA ELFDATA2MSB
|
|
#endif
|
|
#define ELF_ARCH EM_SH
|
|
|
|
#define USE_ELF_CORE_DUMP
|
|
#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 (2 * TASK_SIZE / 3)
|
|
|
|
|
|
#define ELF_CORE_COPY_REGS(_dest,_regs) \
|
|
memcpy((char *) &_dest, (char *) _regs, \
|
|
sizeof(struct pt_regs));
|
|
|
|
/* 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 (boot_cpu_data.flags)
|
|
|
|
/* 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)
|
|
|
|
#define ELF_PLAT_INIT(_r, load_addr) \
|
|
do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
|
|
_r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
|
|
_r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
|
|
_r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \
|
|
_r->sr = SR_FD; } while (0)
|
|
|
|
#ifdef __KERNEL__
|
|
#define SET_PERSONALITY(ex, ibcs2) set_personality(PER_LINUX_32BIT)
|
|
struct task_struct;
|
|
extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
|
|
extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
|
|
|
|
#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
|
|
#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
|
|
#endif
|
|
|
|
#ifdef CONFIG_VSYSCALL
|
|
/* vDSO has arch_setup_additional_pages */
|
|
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
|
|
struct linux_binprm;
|
|
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
|
|
int executable_stack);
|
|
|
|
extern unsigned int vdso_enabled;
|
|
extern void __kernel_vsyscall;
|
|
|
|
#define VDSO_BASE ((unsigned long)current->mm->context.vdso)
|
|
#define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x))
|
|
|
|
#define ARCH_DLINFO \
|
|
do { \
|
|
if (vdso_enabled) \
|
|
NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \
|
|
} while (0)
|
|
#endif /* CONFIG_VSYSCALL */
|
|
|
|
#endif /* __ASM_SH_ELF_H */
|