/* * Linker script for gate DSO. The gate pages are an ELF shared object * prelinked to its virtual address, with only one read-only segment and * one execute-only segment (both fit in one page). This script controls * its layout. */ #include #include "paravirt_patchlist.h" SECTIONS { . = GATE_ADDR + SIZEOF_HEADERS; .hash : { *(.hash) } :readable .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } .gnu.version_d : { *(.gnu.version_d) } .gnu.version_r : { *(.gnu.version_r) } .note : { *(.note*) } :readable :note .dynamic : { *(.dynamic) } :readable :dynamic /* * This linker script is used both with -r and with -shared. For * the layouts to match, we need to skip more than enough space for * the dynamic symbol table et al. If this amount is insufficient, * ld -shared will barf. Just increase it here. */ . = GATE_ADDR + 0x600; .data.patch : { __paravirt_start_gate_mckinley_e9_patchlist = .; *(.data.patch.mckinley_e9) __paravirt_end_gate_mckinley_e9_patchlist = .; __paravirt_start_gate_vtop_patchlist = .; *(.data.patch.vtop) __paravirt_end_gate_vtop_patchlist = .; __paravirt_start_gate_fsyscall_patchlist = .; *(.data.patch.fsyscall_table) __paravirt_end_gate_fsyscall_patchlist = .; __paravirt_start_gate_brl_fsys_bubble_down_patchlist = .; *(.data.patch.brl_fsys_bubble_down) __paravirt_end_gate_brl_fsys_bubble_down_patchlist = .; } :readable .IA_64.unwind_info : { *(.IA_64.unwind_info*) } .IA_64.unwind : { *(.IA_64.unwind*) } :readable :unwind #ifdef HAVE_BUGGY_SEGREL .text (GATE_ADDR + PAGE_SIZE) : { *(.text) *(.text.*) } :readable #else . = ALIGN(PERCPU_PAGE_SIZE) + (. & (PERCPU_PAGE_SIZE - 1)); .text : { *(.text) *(.text.*) } :epc #endif /DISCARD/ : { *(.got.plt) *(.got) *(.data .data.* .gnu.linkonce.d.*) *(.dynbss) *(.bss .bss.* .gnu.linkonce.b.*) *(__ex_table) *(__mca_table) } } /* * ld does not recognize this name token; use the constant. */ #define PT_IA_64_UNWIND 0x70000001 /* * We must supply the ELF program headers explicitly to get just one * PT_LOAD segment, and set the flags explicitly to make segments read-only. */ PHDRS { readable PT_LOAD FILEHDR PHDRS FLAGS(4); /* PF_R */ #ifndef HAVE_BUGGY_SEGREL epc PT_LOAD FILEHDR PHDRS FLAGS(1); /* PF_X */ #endif dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ note PT_NOTE FLAGS(4); /* PF_R */ unwind PT_IA_64_UNWIND; } /* * This controls what symbols we export from the DSO. */ VERSION { LINUX_2.5 { global: __kernel_syscall_via_break; __kernel_syscall_via_epc; __kernel_sigtramp; local: *; }; } /* The ELF entry point can be used to set the AT_SYSINFO value. */ ENTRY(__kernel_syscall_via_epc)