projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 | 2 | /* |
| 1a43be74 RM |
3 | * Linker script for gate DSO. The gate pages are an ELF shared object |
| 4 | * prelinked to its virtual address, with only one read-only segment and | |
| 5 | * one execute-only segment (both fit in one page). This script controls | |
| 6 | * its layout. | |
| 1da177e4 LT |
7 | */ |
| 8 | ||
| c140d879 | 9 | #include <asm/page.h> |
| 1da177e4 LT |
10 | |
| 11 | SECTIONS | |
| 12 | { | |
| 1a43be74 RM |
13 | . = GATE_ADDR + SIZEOF_HEADERS; |
| 14 | ||
| 15 | .hash : { *(.hash) } :readable | |
| 16 | .gnu.hash : { *(.gnu.hash) } | |
| 17 | .dynsym : { *(.dynsym) } | |
| 18 | .dynstr : { *(.dynstr) } | |
| 19 | .gnu.version : { *(.gnu.version) } | |
| 20 | .gnu.version_d : { *(.gnu.version_d) } | |
| 21 | .gnu.version_r : { *(.gnu.version_r) } | |
| 22 | ||
| 172c5106 RM |
23 | .note : { *(.note*) } :readable :note |
| 24 | ||
| 1a43be74 RM |
25 | .dynamic : { *(.dynamic) } :readable :dynamic |
| 26 | ||
| 27 | /* | |
| 28 | * This linker script is used both with -r and with -shared. For | |
| 29 | * the layouts to match, we need to skip more than enough space for | |
| 30 | * the dynamic symbol table et al. If this amount is insufficient, | |
| 31 | * ld -shared will barf. Just increase it here. | |
| 32 | */ | |
| 1f0abae8 | 33 | . = GATE_ADDR + 0x600; |
| 1a43be74 | 34 | |
| dafb9320 | 35 | .data..patch : { |
| e55645ec | 36 | __start_gate_mckinley_e9_patchlist = .; |
| dafb9320 | 37 | *(.data..patch.mckinley_e9) |
| e55645ec | 38 | __end_gate_mckinley_e9_patchlist = .; |
| 1a43be74 | 39 | |
| e55645ec | 40 | __start_gate_vtop_patchlist = .; |
| dafb9320 | 41 | *(.data..patch.vtop) |
| e55645ec | 42 | __end_gate_vtop_patchlist = .; |
| 1a43be74 | 43 | |
| e55645ec | 44 | __start_gate_fsyscall_patchlist = .; |
| dafb9320 | 45 | *(.data..patch.fsyscall_table) |
| e55645ec | 46 | __end_gate_fsyscall_patchlist = .; |
| 1a43be74 | 47 | |
| e55645ec | 48 | __start_gate_brl_fsys_bubble_down_patchlist = .; |
| dafb9320 | 49 | *(.data..patch.brl_fsys_bubble_down) |
| e55645ec | 50 | __end_gate_brl_fsys_bubble_down_patchlist = .; |
| 1a43be74 RM |
51 | } :readable |
| 52 | ||
| 53 | .IA_64.unwind_info : { *(.IA_64.unwind_info*) } | |
| 54 | .IA_64.unwind : { *(.IA_64.unwind*) } :readable :unwind | |
| 1da177e4 | 55 | #ifdef HAVE_BUGGY_SEGREL |
| 1a43be74 | 56 | .text (GATE_ADDR + PAGE_SIZE) : { *(.text) *(.text.*) } :readable |
| 1da177e4 | 57 | #else |
| 1a43be74 RM |
58 | . = ALIGN(PERCPU_PAGE_SIZE) + (. & (PERCPU_PAGE_SIZE - 1)); |
| 59 | .text : { *(.text) *(.text.*) } :epc | |
| 1da177e4 LT |
60 | #endif |
| 61 | ||
| 1a43be74 RM |
62 | /DISCARD/ : { |
| 63 | *(.got.plt) *(.got) | |
| 64 | *(.data .data.* .gnu.linkonce.d.*) | |
| 65 | *(.dynbss) | |
| 66 | *(.bss .bss.* .gnu.linkonce.b.*) | |
| 67 | *(__ex_table) | |
| 68 | *(__mca_table) | |
| 69 | } | |
| 1da177e4 LT |
70 | } |
| 71 | ||
| 1a43be74 RM |
72 | /* |
| 73 | * ld does not recognize this name token; use the constant. | |
| 74 | */ | |
| 75 | #define PT_IA_64_UNWIND 0x70000001 | |
| 76 | ||
| 1da177e4 LT |
77 | /* |
| 78 | * We must supply the ELF program headers explicitly to get just one | |
| 79 | * PT_LOAD segment, and set the flags explicitly to make segments read-only. | |
| 80 | */ | |
| 81 | PHDRS | |
| 82 | { | |
| 1a43be74 | 83 | readable PT_LOAD FILEHDR PHDRS FLAGS(4); /* PF_R */ |
| 1da177e4 | 84 | #ifndef HAVE_BUGGY_SEGREL |
| 1a43be74 | 85 | epc PT_LOAD FILEHDR PHDRS FLAGS(1); /* PF_X */ |
| 1da177e4 | 86 | #endif |
| 1a43be74 | 87 | dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ |
| 172c5106 | 88 | note PT_NOTE FLAGS(4); /* PF_R */ |
| 1a43be74 | 89 | unwind PT_IA_64_UNWIND; |
| 1da177e4 LT |
90 | } |
| 91 | ||
| 92 | /* | |
| 93 | * This controls what symbols we export from the DSO. | |
| 94 | */ | |
| 95 | VERSION | |
| 96 | { | |
| 1a43be74 RM |
97 | LINUX_2.5 { |
| 98 | global: | |
| 99 | __kernel_syscall_via_break; | |
| 100 | __kernel_syscall_via_epc; | |
| 101 | __kernel_sigtramp; | |
| 102 | ||
| 103 | local: *; | |
| 104 | }; | |
| 1da177e4 LT |
105 | } |
| 106 | ||
| 107 | /* The ELF entry point can be used to set the AT_SYSINFO value. */ | |
| 108 | ENTRY(__kernel_syscall_via_epc) |