2 * Linker script for gate DSO. The gate pages are an ELF shared object prelinked to its
3 * virtual address, with only one read-only segment and one execute-only segment (both fit
4 * in one page). This script controls its layout.
8 #include <asm/system.h>
12 . = GATE_ADDR + SIZEOF_HEADERS;
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 .dynamic : { *(.dynamic) } :readable :dynamic
24 * This linker script is used both with -r and with -shared. For the layouts to match,
25 * we need to skip more than enough space for the dynamic symbol table et al. If this
26 * amount is insufficient, ld -shared will barf. Just increase it here.
28 . = GATE_ADDR + 0x500;
31 __start_gate_mckinley_e9_patchlist = .;
32 *(.data.patch.mckinley_e9)
33 __end_gate_mckinley_e9_patchlist = .;
35 __start_gate_vtop_patchlist = .;
37 __end_gate_vtop_patchlist = .;
39 __start_gate_fsyscall_patchlist = .;
40 *(.data.patch.fsyscall_table)
41 __end_gate_fsyscall_patchlist = .;
43 __start_gate_brl_fsys_bubble_down_patchlist = .;
44 *(.data.patch.brl_fsys_bubble_down)
45 __end_gate_brl_fsys_bubble_down_patchlist = .;
47 .IA_64.unwind_info : { *(.IA_64.unwind_info*) }
48 .IA_64.unwind : { *(.IA_64.unwind*) } :readable :unwind
49 #ifdef HAVE_BUGGY_SEGREL
50 .text (GATE_ADDR + PAGE_SIZE) : { *(.text) *(.text.*) } :readable
52 . = ALIGN (PERCPU_PAGE_SIZE) + (. & (PERCPU_PAGE_SIZE - 1));
53 .text : { *(.text) *(.text.*) } :epc
58 *(.data .data.* .gnu.linkonce.d.*)
60 *(.bss .bss.* .gnu.linkonce.b.*)
67 * We must supply the ELF program headers explicitly to get just one
68 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
72 readable PT_LOAD FILEHDR PHDRS FLAGS(4); /* PF_R */
73 #ifndef HAVE_BUGGY_SEGREL
74 epc PT_LOAD FILEHDR PHDRS FLAGS(1); /* PF_X */
76 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
77 unwind 0x70000001; /* PT_IA_64_UNWIND, but ld doesn't match the name */
81 * This controls what symbols we export from the DSO.
87 __kernel_syscall_via_break;
88 __kernel_syscall_via_epc;
95 /* The ELF entry point can be used to set the AT_SYSINFO value. */
96 ENTRY(__kernel_syscall_via_epc)