1/* 2 * Linker script for gate DSO. The gate pages are an ELF shared object 3 * prelinked to its virtual address, with only one read-only segment and 4 * one execute-only segment (both fit in one page). This script controls 5 * its layout. 6 */ 7 8#include <asm/page.h> 9 10SECTIONS 11{ 12 . = GATE_ADDR + SIZEOF_HEADERS; 13 14 .hash : { *(.hash) } :readable 15 .gnu.hash : { *(.gnu.hash) } 16 .dynsym : { *(.dynsym) } 17 .dynstr : { *(.dynstr) } 18 .gnu.version : { *(.gnu.version) } 19 .gnu.version_d : { *(.gnu.version_d) } 20 .gnu.version_r : { *(.gnu.version_r) } 21 22 .note : { *(.note*) } :readable :note 23 24 .dynamic : { *(.dynamic) } :readable :dynamic 25 26 /* 27 * This linker script is used both with -r and with -shared. For 28 * the layouts to match, we need to skip more than enough space for 29 * the dynamic symbol table et al. If this amount is insufficient, 30 * ld -shared will barf. Just increase it here. 31 */ 32 . = GATE_ADDR + 0x600; 33 34 .data..patch : { 35 __start_gate_mckinley_e9_patchlist = .; 36 *(.data..patch.mckinley_e9) 37 __end_gate_mckinley_e9_patchlist = .; 38 39 __start_gate_vtop_patchlist = .; 40 *(.data..patch.vtop) 41 __end_gate_vtop_patchlist = .; 42 43 __start_gate_fsyscall_patchlist = .; 44 *(.data..patch.fsyscall_table) 45 __end_gate_fsyscall_patchlist = .; 46 47 __start_gate_brl_fsys_bubble_down_patchlist = .; 48 *(.data..patch.brl_fsys_bubble_down) 49 __end_gate_brl_fsys_bubble_down_patchlist = .; 50 } :readable 51 52 .IA_64.unwind_info : { *(.IA_64.unwind_info*) } 53 .IA_64.unwind : { *(.IA_64.unwind*) } :readable :unwind 54#ifdef HAVE_BUGGY_SEGREL 55 .text (GATE_ADDR + PAGE_SIZE) : { *(.text) *(.text.*) } :readable 56#else 57 . = ALIGN(PERCPU_PAGE_SIZE) + (. & (PERCPU_PAGE_SIZE - 1)); 58 .text : { *(.text) *(.text.*) } :epc 59#endif 60 61 /DISCARD/ : { 62 *(.got.plt) *(.got) 63 *(.data .data.* .gnu.linkonce.d.*) 64 *(.dynbss) 65 *(.bss .bss.* .gnu.linkonce.b.*) 66 *(__ex_table) 67 *(__mca_table) 68 } 69} 70 71/* 72 * ld does not recognize this name token; use the constant. 73 */ 74#define PT_IA_64_UNWIND 0x70000001 75 76/* 77 * We must supply the ELF program headers explicitly to get just one 78 * PT_LOAD segment, and set the flags explicitly to make segments read-only. 79 */ 80PHDRS 81{ 82 readable PT_LOAD FILEHDR PHDRS FLAGS(4); /* PF_R */ 83#ifndef HAVE_BUGGY_SEGREL 84 epc PT_LOAD FILEHDR PHDRS FLAGS(1); /* PF_X */ 85#endif 86 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ 87 note PT_NOTE FLAGS(4); /* PF_R */ 88 unwind PT_IA_64_UNWIND; 89} 90 91/* 92 * This controls what symbols we export from the DSO. 93 */ 94VERSION 95{ 96 LINUX_2.5 { 97 global: 98 __kernel_syscall_via_break; 99 __kernel_syscall_via_epc; 100 __kernel_sigtramp; 101 102 local: *; 103 }; 104} 105 106/* The ELF entry point can be used to set the AT_SYSINFO value. */ 107ENTRY(__kernel_syscall_via_epc) 108