212 lines
5.9 KiB
C
212 lines
5.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SH_ELF_H
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#define __ASM_SH_ELF_H
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#include <linux/utsname.h>
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#include <asm/auxvec.h>
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#include <asm/ptrace.h>
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#include <asm/user.h>
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/* ELF header e_flags defines */
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#define EF_SH_PIC 0x100 /* -fpic */
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#define EF_SH_FDPIC 0x8000 /* -mfdpic */
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/* SH (particularly SHcompact) relocation types */
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#define R_SH_NONE 0
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#define R_SH_DIR32 1
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#define R_SH_REL32 2
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#define R_SH_DIR8WPN 3
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#define R_SH_IND12W 4
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#define R_SH_DIR8WPL 5
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#define R_SH_DIR8WPZ 6
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#define R_SH_DIR8BP 7
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#define R_SH_DIR8W 8
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#define R_SH_DIR8L 9
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#define R_SH_SWITCH16 25
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#define R_SH_SWITCH32 26
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#define R_SH_USES 27
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#define R_SH_COUNT 28
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#define R_SH_ALIGN 29
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#define R_SH_CODE 30
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#define R_SH_DATA 31
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#define R_SH_LABEL 32
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#define R_SH_SWITCH8 33
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#define R_SH_GNU_VTINHERIT 34
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#define R_SH_GNU_VTENTRY 35
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#define R_SH_TLS_GD_32 144
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#define R_SH_TLS_LD_32 145
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#define R_SH_TLS_LDO_32 146
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#define R_SH_TLS_IE_32 147
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#define R_SH_TLS_LE_32 148
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#define R_SH_TLS_DTPMOD32 149
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#define R_SH_TLS_DTPOFF32 150
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#define R_SH_TLS_TPOFF32 151
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#define R_SH_GOT32 160
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#define R_SH_PLT32 161
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#define R_SH_COPY 162
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#define R_SH_GLOB_DAT 163
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#define R_SH_JMP_SLOT 164
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#define R_SH_RELATIVE 165
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#define R_SH_GOTOFF 166
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#define R_SH_GOTPC 167
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/* FDPIC relocs */
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#define R_SH_GOT20 201
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#define R_SH_GOTOFF20 202
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#define R_SH_GOTFUNCDESC 203
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#define R_SH_GOTFUNCDESC20 204
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#define R_SH_GOTOFFFUNCDESC 205
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#define R_SH_GOTOFFFUNCDESC20 206
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#define R_SH_FUNCDESC 207
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#define R_SH_FUNCDESC_VALUE 208
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/* SHmedia relocs */
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#define R_SH_IMM_LOW16 246
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#define R_SH_IMM_LOW16_PCREL 247
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#define R_SH_IMM_MEDLOW16 248
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#define R_SH_IMM_MEDLOW16_PCREL 249
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/* Keep this the last entry. */
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#define R_SH_NUM 256
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/*
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* ELF register definitions..
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*/
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typedef unsigned long elf_greg_t;
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#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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typedef struct user_fpu_struct elf_fpregset_t;
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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_CLASS ELFCLASS32
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#ifdef __LITTLE_ENDIAN__
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#define ELF_DATA ELFDATA2LSB
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#else
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#define ELF_DATA ELFDATA2MSB
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#endif
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#define ELF_ARCH EM_SH
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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*/
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#define elf_check_arch(x) ((x)->e_machine == EM_SH)
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#define elf_check_fdpic(x) ((x)->e_flags & EF_SH_FDPIC)
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#define elf_check_const_displacement(x) ((x)->e_flags & EF_SH_PIC)
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/*
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* Enable dump using regset.
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* This covers all of general/DSP/FPU regs.
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*/
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#define CORE_DUMP_USE_REGSET
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#define ELF_FDPIC_CORE_EFLAGS EF_SH_FDPIC
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#define ELF_EXEC_PAGESIZE PAGE_SIZE
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/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
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use of this is to invoke "./ld.so someprog" to test out a new version of
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the loader. We need to make sure that it is out of the way of the program
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that it will "exec", and that there is sufficient room for the brk. */
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#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
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#define ELF_CORE_COPY_REGS(_dest,_regs) \
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memcpy((char *) &_dest, (char *) _regs, \
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sizeof(struct pt_regs));
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/* This yields a mask that user programs can use to figure out what
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instruction set this CPU supports. This could be done in user space,
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but it's not easy, and we've already done it here. */
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#define ELF_HWCAP (boot_cpu_data.flags)
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/* This yields a string that ld.so will use to load implementation
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specific libraries for optimization. This is more specific in
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intent than poking at uname or /proc/cpuinfo.
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For the moment, we have only optimizations for the Intel generations,
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but that could change... */
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#define ELF_PLATFORM (utsname()->machine)
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#define ELF_PLAT_INIT(_r, load_addr) \
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do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
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_r->regs[4]=0; _r->regs[5]=0; _r->regs[6]=0; _r->regs[7]=0; \
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_r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
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_r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \
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_r->sr = SR_FD; } while (0)
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#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, \
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_dynamic_addr) \
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do { \
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_r->regs[0] = 0; \
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_r->regs[1] = 0; \
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_r->regs[2] = 0; \
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_r->regs[3] = 0; \
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_r->regs[4] = 0; \
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_r->regs[5] = 0; \
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_r->regs[6] = 0; \
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_r->regs[7] = 0; \
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_r->regs[8] = _exec_map_addr; \
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_r->regs[9] = _interp_map_addr; \
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_r->regs[10] = _dynamic_addr; \
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_r->regs[11] = 0; \
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_r->regs[12] = 0; \
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_r->regs[13] = 0; \
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_r->regs[14] = 0; \
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_r->sr = SR_FD; \
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} while (0)
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#define SET_PERSONALITY(ex) \
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set_personality(PER_LINUX_32BIT | (current->personality & (~PER_MASK)))
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#ifdef CONFIG_VSYSCALL
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/* vDSO has arch_setup_additional_pages */
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#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
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struct linux_binprm;
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extern int arch_setup_additional_pages(struct linux_binprm *bprm,
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int uses_interp);
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extern unsigned int vdso_enabled;
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extern void __kernel_vsyscall;
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#define VDSO_BASE ((unsigned long)current->mm->context.vdso)
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#define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x))
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#define VSYSCALL_AUX_ENT \
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if (vdso_enabled) \
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NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \
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else \
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NEW_AUX_ENT(AT_IGNORE, 0)
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#else
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#define VSYSCALL_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0)
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#endif /* CONFIG_VSYSCALL */
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#ifdef CONFIG_SH_FPU
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#define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT)
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#else
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#define FPU_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0)
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#endif
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extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
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/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
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#define ARCH_DLINFO \
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do { \
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/* Optional FPU initialization */ \
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FPU_AUX_ENT; \
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\
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/* Optional vsyscall entry */ \
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VSYSCALL_AUX_ENT; \
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\
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/* Cache desc */ \
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NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape); \
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NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape); \
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NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape); \
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} while (0)
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#endif /* __ASM_SH_ELF_H */
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