1 files changed, 193 insertions, 0 deletions

diff --git a/include/asm-i386/elf.h b/include/asm-i386/elf.h
new file mode 100644
index 000000000000..130bdc8c68cf
--- /dev/null
+++ b/include/asm-i386/elf.h
@@ -0,0 +1,193 @@
+#ifndef __ASMi386_ELF_H
+#define __ASMi386_ELF_H
+
+/*
+ * ELF register definitions..
+ */
+
+#include <asm/ptrace.h>
+#include <asm/user.h>
+#include <asm/processor.h>
+#include <asm/system.h>         /* for savesegment */
+
+#include <linux/utsname.h>
+
+#define R_386_NONE      0
+#define R_386_32        1
+#define R_386_PC32      2
+#define R_386_GOT32     3
+#define R_386_PLT32     4
+#define R_386_COPY      5
+#define R_386_GLOB_DAT  6
+#define R_386_JMP_SLOT  7
+#define R_386_RELATIVE  8
+#define R_386_GOTOFF    9
+#define R_386_GOTPC     10
+#define R_386_NUM       11
+
+typedef unsigned long elf_greg_t;
+
+#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef struct user_i387_struct elf_fpregset_t;
+typedef struct user_fxsr_struct elf_fpxregset_t;
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x) \
+        (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS       ELFCLASS32
+#define ELF_DATA        ELFDATA2LSB
+#define ELF_ARCH        EM_386
+
+/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
+   contains a pointer to a function which might be registered using `atexit'.
+   This provides a mean for the dynamic linker to call DT_FINI functions for
+   shared libraries that have been loaded before the code runs.
+
+   A value of 0 tells we have no such handler. 
+
+   We might as well make sure everything else is cleared too (except for %esp),
+   just to make things more deterministic.
+ */
+#define ELF_PLAT_INIT(_r, load_addr)    do { \
+        _r->ebx = 0; _r->ecx = 0; _r->edx = 0; \
+        _r->esi = 0; _r->edi = 0; _r->ebp = 0; \
+        _r->eax = 0; \
+} while (0)
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE       4096
+
+/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+   use of this is to invoke "./ld.so someprog" to test out a new version of
+   the loader.  We need to make sure that it is out of the way of the program
+   that it will "exec", and that there is sufficient room for the brk.  */
+
+#define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
+
+/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
+   now struct_user_regs, they are different) */
+
+#define ELF_CORE_COPY_REGS(pr_reg, regs)                \
+        pr_reg[0] = regs->ebx;                          \
+        pr_reg[1] = regs->ecx;                          \
+        pr_reg[2] = regs->edx;                          \
+        pr_reg[3] = regs->esi;                          \
+        pr_reg[4] = regs->edi;                          \
+        pr_reg[5] = regs->ebp;                          \
+        pr_reg[6] = regs->eax;                          \
+        pr_reg[7] = regs->xds;                          \
+        pr_reg[8] = regs->xes;                          \
+        savesegment(fs,pr_reg[9]);                      \
+        savesegment(gs,pr_reg[10]);                     \
+        pr_reg[11] = regs->orig_eax;                    \
+        pr_reg[12] = regs->eip;                         \
+        pr_reg[13] = regs->xcs;                         \
+        pr_reg[14] = regs->eflags;                      \
+        pr_reg[15] = regs->esp;                         \
+        pr_reg[16] = regs->xss;
+
+/* This yields a mask that user programs can use to figure out what
+   instruction set this CPU supports.  This could be done in user space,
+   but it's not easy, and we've already done it here.  */
+
+#define ELF_HWCAP       (boot_cpu_data.x86_capability[0])
+
+/* This yields a string that ld.so will use to load implementation
+   specific libraries for optimization.  This is more specific in
+   intent than poking at uname or /proc/cpuinfo.
+
+   For the moment, we have only optimizations for the Intel generations,
+   but that could change... */
+
+#define ELF_PLATFORM  (system_utsname.machine)
+
+/*
+ * Architecture-neutral AT_ values in 0-17, leave some room
+ * for more of them, start the x86-specific ones at 32.
+ */
+#define AT_SYSINFO              32
+#define AT_SYSINFO_EHDR         33
+
+#ifdef __KERNEL__
+#define SET_PERSONALITY(ex, ibcs2) do { } while (0)
+
+/*
+ * An executable for which elf_read_implies_exec() returns TRUE will
+ * have the READ_IMPLIES_EXEC personality flag set automatically.
+ */
+#define elf_read_implies_exec(ex, executable_stack)     (executable_stack != EXSTACK_DISABLE_X)
+
+extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
+extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
+extern int dump_task_extended_fpu (struct task_struct *, struct user_fxsr_struct *);
+
+#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
+#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
+#define ELF_CORE_COPY_XFPREGS(tsk, elf_xfpregs) dump_task_extended_fpu(tsk, elf_xfpregs)
+
+#define VSYSCALL_BASE   (__fix_to_virt(FIX_VSYSCALL))
+#define VSYSCALL_EHDR   ((const struct elfhdr *) VSYSCALL_BASE)
+#define VSYSCALL_ENTRY  ((unsigned long) &__kernel_vsyscall)
+extern void __kernel_vsyscall;
+
+#define ARCH_DLINFO                                             \
+do {                                                            \
+                NEW_AUX_ENT(AT_SYSINFO, VSYSCALL_ENTRY);        \
+                NEW_AUX_ENT(AT_SYSINFO_EHDR, VSYSCALL_BASE);    \
+} while (0)
+
+/*
+ * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out
+ * extra segments containing the vsyscall DSO contents.  Dumping its
+ * contents makes post-mortem fully interpretable later without matching up
+ * the same kernel and hardware config to see what PC values meant.
+ * Dumping its extra ELF program headers includes all the other information
+ * a debugger needs to easily find how the vsyscall DSO was being used.
+ */
+#define ELF_CORE_EXTRA_PHDRS            (VSYSCALL_EHDR->e_phnum)
+#define ELF_CORE_WRITE_EXTRA_PHDRS                                            \
+do {                                                                          \
+        const struct elf_phdr *const vsyscall_phdrs =                         \
+                (const struct elf_phdr *) (VSYSCALL_BASE                      \
+                                           + VSYSCALL_EHDR->e_phoff);         \
+        int i;                                                                \
+        Elf32_Off ofs = 0;                                                    \
+        for (i = 0; i < VSYSCALL_EHDR->e_phnum; ++i) {                        \
+                struct elf_phdr phdr = vsyscall_phdrs[i];                     \
+                if (phdr.p_type == PT_LOAD) {                                 \
+                        BUG_ON(ofs != 0);                                     \
+                        ofs = phdr.p_offset = offset;                         \
+                        phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz);              \
+                        phdr.p_filesz = phdr.p_memsz;                         \
+                        offset += phdr.p_filesz;                              \
+                }                                                             \
+                else                                                          \
+                        phdr.p_offset += ofs;                                 \
+                phdr.p_paddr = 0; /* match other core phdrs */                \
+                DUMP_WRITE(&phdr, sizeof(phdr));                              \
+        }                                                                     \
+} while (0)
+#define ELF_CORE_WRITE_EXTRA_DATA                                             \
+do {                                                                          \
+        const struct elf_phdr *const vsyscall_phdrs =                         \
+                (const struct elf_phdr *) (VSYSCALL_BASE                      \
+                                           + VSYSCALL_EHDR->e_phoff);         \
+        int i;                                                                \
+        for (i = 0; i < VSYSCALL_EHDR->e_phnum; ++i) {                        \
+                if (vsyscall_phdrs[i].p_type == PT_LOAD)                      \
+                        DUMP_WRITE((void *) vsyscall_phdrs[i].p_vaddr,        \
+                                   PAGE_ALIGN(vsyscall_phdrs[i].p_memsz));    \
+        }                                                                     \
+} while (0)
+
+#endif
+
+#endif