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166 lines
5.7 KiB
166 lines
5.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __ASM_ALPHA_ELF_H |
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#define __ASM_ALPHA_ELF_H |
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#include <asm/auxvec.h> |
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#include <asm/special_insns.h> |
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/* Special values for the st_other field in the symbol table. */ |
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#define STO_ALPHA_NOPV 0x80 |
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#define STO_ALPHA_STD_GPLOAD 0x88 |
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/* |
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* Alpha ELF relocation types |
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*/ |
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#define R_ALPHA_NONE 0 /* No reloc */ |
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#define R_ALPHA_REFLONG 1 /* Direct 32 bit */ |
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#define R_ALPHA_REFQUAD 2 /* Direct 64 bit */ |
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#define R_ALPHA_GPREL32 3 /* GP relative 32 bit */ |
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#define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */ |
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#define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */ |
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#define R_ALPHA_GPDISP 6 /* Add displacement to GP */ |
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#define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */ |
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#define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */ |
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#define R_ALPHA_SREL16 9 /* PC relative 16 bit */ |
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#define R_ALPHA_SREL32 10 /* PC relative 32 bit */ |
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#define R_ALPHA_SREL64 11 /* PC relative 64 bit */ |
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#define R_ALPHA_GPRELHIGH 17 /* GP relative 32 bit, high 16 bits */ |
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#define R_ALPHA_GPRELLOW 18 /* GP relative 32 bit, low 16 bits */ |
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#define R_ALPHA_GPREL16 19 /* GP relative 16 bit */ |
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#define R_ALPHA_COPY 24 /* Copy symbol at runtime */ |
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#define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */ |
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#define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */ |
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#define R_ALPHA_RELATIVE 27 /* Adjust by program base */ |
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#define R_ALPHA_BRSGP 28 |
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#define R_ALPHA_TLSGD 29 |
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#define R_ALPHA_TLS_LDM 30 |
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#define R_ALPHA_DTPMOD64 31 |
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#define R_ALPHA_GOTDTPREL 32 |
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#define R_ALPHA_DTPREL64 33 |
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#define R_ALPHA_DTPRELHI 34 |
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#define R_ALPHA_DTPRELLO 35 |
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#define R_ALPHA_DTPREL16 36 |
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#define R_ALPHA_GOTTPREL 37 |
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#define R_ALPHA_TPREL64 38 |
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#define R_ALPHA_TPRELHI 39 |
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#define R_ALPHA_TPRELLO 40 |
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#define R_ALPHA_TPREL16 41 |
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#define SHF_ALPHA_GPREL 0x10000000 |
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/* Legal values for e_flags field of Elf64_Ehdr. */ |
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#define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */ |
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/* |
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* ELF register definitions.. |
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*/ |
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/* |
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* The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long. |
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* I have no idea why that is so. For now, we just leave it at 33 |
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* (32 general regs + processor status word). |
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*/ |
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#define ELF_NGREG 33 |
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#define ELF_NFPREG 32 |
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typedef unsigned long elf_greg_t; |
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typedef elf_greg_t elf_gregset_t[ELF_NGREG]; |
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typedef double elf_fpreg_t; |
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typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; |
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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_ALPHA) |
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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 ELFCLASS64 |
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#define ELF_DATA ELFDATA2LSB |
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#define ELF_ARCH EM_ALPHA |
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#define ELF_EXEC_PAGESIZE 8192 |
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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 (TASK_UNMAPPED_BASE + 0x1000000) |
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/* $0 is set by ld.so to a pointer to a function which might be |
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registered using atexit. This provides a mean for the dynamic |
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linker to call DT_FINI functions for shared libraries that have |
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been loaded before the code runs. |
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So that we can use the same startup file with static executables, |
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we start programs with a value of 0 to indicate that there is no |
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such function. */ |
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#define ELF_PLAT_INIT(_r, load_addr) _r->r0 = 0 |
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/* The registers are laid out in pt_regs for PAL and syscall |
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convenience. Re-order them for the linear elf_gregset_t. */ |
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struct pt_regs; |
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struct thread_info; |
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struct task_struct; |
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extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt, |
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struct thread_info *ti); |
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#define ELF_CORE_COPY_REGS(DEST, REGS) \ |
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dump_elf_thread(DEST, REGS, current_thread_info()); |
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/* Similar, but for a thread other than current. */ |
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extern int dump_elf_task(elf_greg_t *dest, struct task_struct *task); |
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#define ELF_CORE_COPY_TASK_REGS(TASK, DEST) \ |
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dump_elf_task(*(DEST), TASK) |
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/* Similar, but for the FP registers. */ |
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extern int dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task); |
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#define ELF_CORE_COPY_FPREGS(TASK, DEST) \ |
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dump_elf_task_fp(*(DEST), TASK) |
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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 is trivial on Alpha, |
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but not so on other machines. */ |
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#define ELF_HWCAP (~amask(-1)) |
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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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#define ELF_PLATFORM \ |
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({ \ |
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enum implver_enum i_ = implver(); \ |
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( i_ == IMPLVER_EV4 ? "ev4" \ |
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: i_ == IMPLVER_EV5 \ |
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? (amask(AMASK_BWX) ? "ev5" : "ev56") \ |
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: amask (AMASK_CIX) ? "ev6" : "ev67"); \ |
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}) |
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#define SET_PERSONALITY(EX) \ |
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set_personality(((EX).e_flags & EF_ALPHA_32BIT) \ |
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? PER_LINUX_32BIT : PER_LINUX) |
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extern int alpha_l1i_cacheshape; |
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extern int alpha_l1d_cacheshape; |
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extern int alpha_l2_cacheshape; |
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extern int alpha_l3_cacheshape; |
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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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NEW_AUX_ENT(AT_L1I_CACHESHAPE, alpha_l1i_cacheshape); \ |
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NEW_AUX_ENT(AT_L1D_CACHESHAPE, alpha_l1d_cacheshape); \ |
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NEW_AUX_ENT(AT_L2_CACHESHAPE, alpha_l2_cacheshape); \ |
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NEW_AUX_ENT(AT_L3_CACHESHAPE, alpha_l3_cacheshape); \ |
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} while (0) |
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#endif /* __ASM_ALPHA_ELF_H */
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