ia64/xen-unstable

view xenolinux-2.4.21-pre4-sparse/include/asm-xeno/elf.h @ 235:d7d0a23b2e07

bitkeeper revision 1.93 (3e5a4e6bkPheUp3x1uufN2MS3LAB7A)

Latest and Greatest version of XenoLinux based on the Linux-2.4.21-pre4
kernel.
author iap10@labyrinth.cl.cam.ac.uk
date Mon Feb 24 16:55:07 2003 +0000 (2003-02-24)
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1 #ifndef __ASMi386_ELF_H
2 #define __ASMi386_ELF_H
4 /*
5 * ELF register definitions..
6 */
8 #include <asm/ptrace.h>
9 #include <asm/user.h>
11 #include <linux/utsname.h>
13 typedef unsigned long elf_greg_t;
15 #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
16 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
18 typedef struct user_i387_struct elf_fpregset_t;
19 typedef struct user_fxsr_struct elf_fpxregset_t;
21 /*
22 * This is used to ensure we don't load something for the wrong architecture.
23 */
24 #define elf_check_arch(x) \
25 (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
27 /*
28 * These are used to set parameters in the core dumps.
29 */
30 #define ELF_CLASS ELFCLASS32
31 #define ELF_DATA ELFDATA2LSB
32 #define ELF_ARCH EM_386
34 /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
35 contains a pointer to a function which might be registered using `atexit'.
36 This provides a mean for the dynamic linker to call DT_FINI functions for
37 shared libraries that have been loaded before the code runs.
39 A value of 0 tells we have no such handler.
41 We might as well make sure everything else is cleared too (except for %esp),
42 just to make things more deterministic.
43 */
44 #define ELF_PLAT_INIT(_r) do { \
45 _r->ebx = 0; _r->ecx = 0; _r->edx = 0; \
46 _r->esi = 0; _r->edi = 0; _r->ebp = 0; \
47 _r->eax = 0; \
48 } while (0)
50 #define USE_ELF_CORE_DUMP
51 #define ELF_EXEC_PAGESIZE 4096
53 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical
54 use of this is to invoke "./ld.so someprog" to test out a new version of
55 the loader. We need to make sure that it is out of the way of the program
56 that it will "exec", and that there is sufficient room for the brk. */
58 #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
60 /* Wow, the "main" arch needs arch dependent functions too.. :) */
62 /* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
63 now struct_user_regs, they are different) */
65 #define ELF_CORE_COPY_REGS(pr_reg, regs) \
66 pr_reg[0] = regs->ebx; \
67 pr_reg[1] = regs->ecx; \
68 pr_reg[2] = regs->edx; \
69 pr_reg[3] = regs->esi; \
70 pr_reg[4] = regs->edi; \
71 pr_reg[5] = regs->ebp; \
72 pr_reg[6] = regs->eax; \
73 pr_reg[7] = regs->xds; \
74 pr_reg[8] = regs->xes; \
75 /* fake once used fs and gs selectors? */ \
76 pr_reg[9] = regs->xds; /* was fs and __fs */ \
77 pr_reg[10] = regs->xds; /* was gs and __gs */ \
78 pr_reg[11] = regs->orig_eax; \
79 pr_reg[12] = regs->eip; \
80 pr_reg[13] = regs->xcs; \
81 pr_reg[14] = regs->eflags; \
82 pr_reg[15] = regs->esp; \
83 pr_reg[16] = regs->xss;
85 /* This yields a mask that user programs can use to figure out what
86 instruction set this CPU supports. This could be done in user space,
87 but it's not easy, and we've already done it here. */
89 #define ELF_HWCAP (boot_cpu_data.x86_capability[0])
91 /* This yields a string that ld.so will use to load implementation
92 specific libraries for optimization. This is more specific in
93 intent than poking at uname or /proc/cpuinfo.
95 For the moment, we have only optimizations for the Intel generations,
96 but that could change... */
98 #define ELF_PLATFORM (system_utsname.machine)
100 #ifdef __KERNEL__
101 #define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
102 #endif
104 #endif