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211 lines
5.9 KiB
211 lines
5.9 KiB
/* 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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