projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 19f9a34f PM |
1 | /* |
| 2 | * Linker script for vsyscall DSO. The vsyscall page is an ELF shared | |
| 3 | * object prelinked to its virtual address, and with only one read-only | |
| 4 | * segment (that fits in one page). This script controls its layout. | |
| 5 | */ | |
| 6 | #include <asm/asm-offsets.h> | |
| 7 | ||
| 8 | #ifdef CONFIG_CPU_LITTLE_ENDIAN | |
| 9 | OUTPUT_FORMAT("elf32-sh-linux", "elf32-sh-linux", "elf32-sh-linux") | |
| 10 | #else | |
| 11 | OUTPUT_FORMAT("elf32-shbig-linux", "elf32-shbig-linux", "elf32-shbig-linux") | |
| 12 | #endif | |
| 13 | OUTPUT_ARCH(sh) | |
| 14 | ||
| 15 | /* The ELF entry point can be used to set the AT_SYSINFO value. */ | |
| 16 | ENTRY(__kernel_vsyscall); | |
| 17 | ||
| 18 | SECTIONS | |
| 19 | { | |
| c4eecc99 | 20 | . = SIZEOF_HEADERS; |
| 19f9a34f | 21 | |
| c4eecc99 RM |
22 | .hash : { *(.hash) } :text |
| 23 | .gnu.hash : { *(.gnu.hash) } | |
| 24 | .dynsym : { *(.dynsym) } | |
| 25 | .dynstr : { *(.dynstr) } | |
| 26 | .gnu.version : { *(.gnu.version) } | |
| 27 | .gnu.version_d : { *(.gnu.version_d) } | |
| 28 | .gnu.version_r : { *(.gnu.version_r) } | |
| 19f9a34f | 29 | |
| c4eecc99 RM |
30 | /* |
| 31 | * This linker script is used both with -r and with -shared. | |
| 32 | * For the layouts to match, we need to skip more than enough | |
| 33 | * space for the dynamic symbol table et al. If this amount | |
| 34 | * is insufficient, ld -shared will barf. Just increase it here. | |
| 35 | */ | |
| 36 | . = 0x400; | |
| 19f9a34f | 37 | |
| c4eecc99 RM |
38 | .text : { *(.text) } :text =0x90909090 |
| 39 | .note : { *(.note.*) } :text :note | |
| 40 | .eh_frame_hdr : { *(.eh_frame_hdr ) } :text :eh_frame_hdr | |
| f38c5a69 KK |
41 | .eh_frame : { |
| 42 | KEEP (*(.eh_frame)) | |
| 43 | LONG (0) | |
| 44 | } :text | |
| c4eecc99 RM |
45 | .dynamic : { *(.dynamic) } :text :dynamic |
| 46 | .useless : { | |
| 47 | *(.got.plt) *(.got) | |
| 48 | *(.data .data.* .gnu.linkonce.d.*) | |
| 49 | *(.dynbss) | |
| 50 | *(.bss .bss.* .gnu.linkonce.b.*) | |
| 51 | } :text | |
| 19f9a34f PM |
52 | } |
| 53 | ||
| c4eecc99 RM |
54 | /* |
| 55 | * Very old versions of ld do not recognize this name token; use the constant. | |
| 56 | */ | |
| 57 | #define PT_GNU_EH_FRAME 0x6474e550 | |
| 58 | ||
| 19f9a34f PM |
59 | /* |
| 60 | * We must supply the ELF program headers explicitly to get just one | |
| 61 | * PT_LOAD segment, and set the flags explicitly to make segments read-only. | |
| 62 | */ | |
| 63 | PHDRS | |
| 64 | { | |
| c4eecc99 RM |
65 | text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */ |
| 66 | dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ | |
| 67 | note PT_NOTE FLAGS(4); /* PF_R */ | |
| 68 | eh_frame_hdr PT_GNU_EH_FRAME; | |
| 19f9a34f PM |
69 | } |
| 70 | ||
| 71 | /* | |
| 72 | * This controls what symbols we export from the DSO. | |
| 73 | */ | |
| 74 | VERSION | |
| 75 | { | |
| c4eecc99 RM |
76 | LINUX_2.6 { |
| 77 | global: | |
| 78 | __kernel_vsyscall; | |
| 79 | __kernel_sigreturn; | |
| 80 | __kernel_rt_sigreturn; | |
| 19f9a34f | 81 | |
| c4eecc99 RM |
82 | local: *; |
| 83 | }; | |
| 19f9a34f | 84 | } |