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Linux/arch/x86/um/asm/elf.h

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  1 /*
  2  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  3  * Licensed under the GPL
  4  */
  5 #ifndef __UM_ELF_X86_H
  6 #define __UM_ELF_X86_H
  7 
  8 #include <asm/user.h>
  9 #include <skas.h>
 10 
 11 #ifdef CONFIG_X86_32
 12 
 13 #define R_386_NONE      0
 14 #define R_386_32        1
 15 #define R_386_PC32      2
 16 #define R_386_GOT32     3
 17 #define R_386_PLT32     4
 18 #define R_386_COPY      5
 19 #define R_386_GLOB_DAT  6
 20 #define R_386_JMP_SLOT  7
 21 #define R_386_RELATIVE  8
 22 #define R_386_GOTOFF    9
 23 #define R_386_GOTPC     10
 24 #define R_386_NUM       11
 25 
 26 /*
 27  * This is used to ensure we don't load something for the wrong architecture.
 28  */
 29 #define elf_check_arch(x) \
 30         (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
 31 
 32 #define ELF_CLASS       ELFCLASS32
 33 #define ELF_DATA        ELFDATA2LSB
 34 #define ELF_ARCH        EM_386
 35 
 36 #define ELF_PLAT_INIT(regs, load_addr) do { \
 37         PT_REGS_BX(regs) = 0; \
 38         PT_REGS_CX(regs) = 0; \
 39         PT_REGS_DX(regs) = 0; \
 40         PT_REGS_SI(regs) = 0; \
 41         PT_REGS_DI(regs) = 0; \
 42         PT_REGS_BP(regs) = 0; \
 43         PT_REGS_AX(regs) = 0; \
 44 } while (0)
 45 
 46 /* Shamelessly stolen from include/asm-i386/elf.h */
 47 
 48 #define ELF_CORE_COPY_REGS(pr_reg, regs) do {   \
 49         pr_reg[0] = PT_REGS_BX(regs);           \
 50         pr_reg[1] = PT_REGS_CX(regs);           \
 51         pr_reg[2] = PT_REGS_DX(regs);           \
 52         pr_reg[3] = PT_REGS_SI(regs);           \
 53         pr_reg[4] = PT_REGS_DI(regs);           \
 54         pr_reg[5] = PT_REGS_BP(regs);           \
 55         pr_reg[6] = PT_REGS_AX(regs);           \
 56         pr_reg[7] = PT_REGS_DS(regs);           \
 57         pr_reg[8] = PT_REGS_ES(regs);           \
 58         /* fake once used fs and gs selectors? */       \
 59         pr_reg[9] = PT_REGS_DS(regs);           \
 60         pr_reg[10] = PT_REGS_DS(regs);          \
 61         pr_reg[11] = PT_REGS_SYSCALL_NR(regs);  \
 62         pr_reg[12] = PT_REGS_IP(regs);          \
 63         pr_reg[13] = PT_REGS_CS(regs);          \
 64         pr_reg[14] = PT_REGS_EFLAGS(regs);      \
 65         pr_reg[15] = PT_REGS_SP(regs);          \
 66         pr_reg[16] = PT_REGS_SS(regs);          \
 67 } while (0);
 68 
 69 extern char * elf_aux_platform;
 70 #define ELF_PLATFORM (elf_aux_platform)
 71 
 72 extern unsigned long vsyscall_ehdr;
 73 extern unsigned long vsyscall_end;
 74 extern unsigned long __kernel_vsyscall;
 75 
 76 /*
 77  * This is the range that is readable by user mode, and things
 78  * acting like user mode such as get_user_pages.
 79  */
 80 #define FIXADDR_USER_START      vsyscall_ehdr
 81 #define FIXADDR_USER_END        vsyscall_end
 82 
 83 
 84 /*
 85  * Architecture-neutral AT_ values in 0-17, leave some room
 86  * for more of them, start the x86-specific ones at 32.
 87  */
 88 #define AT_SYSINFO              32
 89 #define AT_SYSINFO_EHDR         33
 90 
 91 #define ARCH_DLINFO                                             \
 92 do {                                                            \
 93         if ( vsyscall_ehdr ) {                                  \
 94                 NEW_AUX_ENT(AT_SYSINFO, __kernel_vsyscall);     \
 95                 NEW_AUX_ENT(AT_SYSINFO_EHDR, vsyscall_ehdr);    \
 96         }                                                       \
 97 } while (0)
 98 
 99 #else
100 
101 /* x86-64 relocation types, taken from asm-x86_64/elf.h */
102 #define R_X86_64_NONE           0       /* No reloc */
103 #define R_X86_64_64             1       /* Direct 64 bit  */
104 #define R_X86_64_PC32           2       /* PC relative 32 bit signed */
105 #define R_X86_64_GOT32          3       /* 32 bit GOT entry */
106 #define R_X86_64_PLT32          4       /* 32 bit PLT address */
107 #define R_X86_64_COPY           5       /* Copy symbol at runtime */
108 #define R_X86_64_GLOB_DAT       6       /* Create GOT entry */
109 #define R_X86_64_JUMP_SLOT      7       /* Create PLT entry */
110 #define R_X86_64_RELATIVE       8       /* Adjust by program base */
111 #define R_X86_64_GOTPCREL       9       /* 32 bit signed pc relative
112                                            offset to GOT */
113 #define R_X86_64_32             10      /* Direct 32 bit zero extended */
114 #define R_X86_64_32S            11      /* Direct 32 bit sign extended */
115 #define R_X86_64_16             12      /* Direct 16 bit zero extended */
116 #define R_X86_64_PC16           13      /* 16 bit sign extended pc relative */
117 #define R_X86_64_8              14      /* Direct 8 bit sign extended  */
118 #define R_X86_64_PC8            15      /* 8 bit sign extended pc relative */
119 
120 #define R_X86_64_NUM            16
121 
122 /*
123  * This is used to ensure we don't load something for the wrong architecture.
124  */
125 #define elf_check_arch(x) \
126         ((x)->e_machine == EM_X86_64)
127 
128 #define ELF_CLASS       ELFCLASS64
129 #define ELF_DATA        ELFDATA2LSB
130 #define ELF_ARCH        EM_X86_64
131 
132 #define ELF_PLAT_INIT(regs, load_addr)    do { \
133         PT_REGS_BX(regs) = 0; \
134         PT_REGS_CX(regs) = 0; \
135         PT_REGS_DX(regs) = 0; \
136         PT_REGS_SI(regs) = 0; \
137         PT_REGS_DI(regs) = 0; \
138         PT_REGS_BP(regs) = 0; \
139         PT_REGS_AX(regs) = 0; \
140         PT_REGS_R8(regs) = 0; \
141         PT_REGS_R9(regs) = 0; \
142         PT_REGS_R10(regs) = 0; \
143         PT_REGS_R11(regs) = 0; \
144         PT_REGS_R12(regs) = 0; \
145         PT_REGS_R13(regs) = 0; \
146         PT_REGS_R14(regs) = 0; \
147         PT_REGS_R15(regs) = 0; \
148 } while (0)
149 
150 #define ELF_CORE_COPY_REGS(pr_reg, _regs)               \
151         (pr_reg)[0] = (_regs)->regs.gp[0];                      \
152         (pr_reg)[1] = (_regs)->regs.gp[1];                      \
153         (pr_reg)[2] = (_regs)->regs.gp[2];                      \
154         (pr_reg)[3] = (_regs)->regs.gp[3];                      \
155         (pr_reg)[4] = (_regs)->regs.gp[4];                      \
156         (pr_reg)[5] = (_regs)->regs.gp[5];                      \
157         (pr_reg)[6] = (_regs)->regs.gp[6];                      \
158         (pr_reg)[7] = (_regs)->regs.gp[7];                      \
159         (pr_reg)[8] = (_regs)->regs.gp[8];                      \
160         (pr_reg)[9] = (_regs)->regs.gp[9];                      \
161         (pr_reg)[10] = (_regs)->regs.gp[10];                    \
162         (pr_reg)[11] = (_regs)->regs.gp[11];                    \
163         (pr_reg)[12] = (_regs)->regs.gp[12];                    \
164         (pr_reg)[13] = (_regs)->regs.gp[13];                    \
165         (pr_reg)[14] = (_regs)->regs.gp[14];                    \
166         (pr_reg)[15] = (_regs)->regs.gp[15];                    \
167         (pr_reg)[16] = (_regs)->regs.gp[16];                    \
168         (pr_reg)[17] = (_regs)->regs.gp[17];                    \
169         (pr_reg)[18] = (_regs)->regs.gp[18];                    \
170         (pr_reg)[19] = (_regs)->regs.gp[19];                    \
171         (pr_reg)[20] = (_regs)->regs.gp[20];                    \
172         (pr_reg)[21] = current->thread.arch.fs;                 \
173         (pr_reg)[22] = 0;                                       \
174         (pr_reg)[23] = 0;                                       \
175         (pr_reg)[24] = 0;                                       \
176         (pr_reg)[25] = 0;                                       \
177         (pr_reg)[26] = 0;
178 
179 #define ELF_PLATFORM "x86_64"
180 
181 /* No user-accessible fixmap addresses, i.e. vsyscall */
182 #define FIXADDR_USER_START      0
183 #define FIXADDR_USER_END        0
184 
185 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
186 struct linux_binprm;
187 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
188         int uses_interp);
189 
190 extern unsigned long um_vdso_addr;
191 #define AT_SYSINFO_EHDR 33
192 #define ARCH_DLINFO     NEW_AUX_ENT(AT_SYSINFO_EHDR, um_vdso_addr)
193 
194 #endif
195 
196 typedef unsigned long elf_greg_t;
197 
198 #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
199 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
200 
201 typedef struct user_i387_struct elf_fpregset_t;
202 
203 struct task_struct;
204 
205 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
206 
207 #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
208 
209 #define ELF_EXEC_PAGESIZE 4096
210 
211 #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
212 
213 extern long elf_aux_hwcap;
214 #define ELF_HWCAP (elf_aux_hwcap)
215 
216 #define SET_PERSONALITY(ex) do ; while(0)
217 
218 #endif
219 

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