From 24f5b95bb91a6edac5dfdc7ddcbd6cabe0b30430 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 11 Oct 2007 11:12:30 +0200 Subject: i386: prepare shared kernel/vsyscall-int80.S Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- arch/i386/kernel/Makefile | 6 ++-- arch/i386/kernel/vsyscall-int80.S | 53 ------------------------------------ arch/i386/kernel/vsyscall-int80_32.S | 53 ++++++++++++++++++++++++++++++++++++ arch/i386/kernel/vsyscall_32.S | 4 +-- 4 files changed, 58 insertions(+), 58 deletions(-) delete mode 100644 arch/i386/kernel/vsyscall-int80.S create mode 100644 arch/i386/kernel/vsyscall-int80_32.S diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile index 38d2b46..84297d4 100644 --- a/arch/i386/kernel/Makefile +++ b/arch/i386/kernel/Makefile @@ -50,7 +50,7 @@ obj-$(CONFIG_SCx200) += scx200.o # vsyscall_32.o contains the vsyscall DSO images as __initdata. # We must build both images before we can assemble it. # Note: kbuild does not track this dependency due to usage of .incbin -$(obj)/vsyscall_32.o: $(obj)/vsyscall-int80.so $(obj)/vsyscall-sysenter.so +$(obj)/vsyscall_32.o: $(obj)/vsyscall-int80_32.so $(obj)/vsyscall-sysenter.so targets += $(foreach F,int80 sysenter,vsyscall-$F.o vsyscall-$F.so) targets += vsyscall-note.o vsyscall_32.lds @@ -64,9 +64,9 @@ export CPPFLAGS_vsyscall_32.lds += -P -C -U$(ARCH) vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 \ $(call ld-option, -Wl$(comma)--hash-style=sysv) SYSCFLAGS_vsyscall-sysenter.so = $(vsyscall-flags) -SYSCFLAGS_vsyscall-int80.so = $(vsyscall-flags) +SYSCFLAGS_vsyscall-int80_32.so = $(vsyscall-flags) -$(obj)/vsyscall-int80.so $(obj)/vsyscall-sysenter.so: \ +$(obj)/vsyscall-int80_32.so $(obj)/vsyscall-sysenter.so: \ $(obj)/vsyscall-%.so: $(src)/vsyscall_32.lds \ $(obj)/vsyscall-%.o $(obj)/vsyscall-note.o FORCE $(call if_changed,syscall) diff --git a/arch/i386/kernel/vsyscall-int80.S b/arch/i386/kernel/vsyscall-int80.S deleted file mode 100644 index 530d052..0000000 --- a/arch/i386/kernel/vsyscall-int80.S +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Code for the vsyscall page. This version uses the old int $0x80 method. - * - * NOTE: - * 1) __kernel_vsyscall _must_ be first in this page. - * 2) there are alignment constraints on this stub, see vsyscall-sigreturn.S - * for details. - */ - - .text - .globl __kernel_vsyscall - .type __kernel_vsyscall,@function -__kernel_vsyscall: -.LSTART_vsyscall: - int $0x80 - ret -.LEND_vsyscall: - .size __kernel_vsyscall,.-.LSTART_vsyscall - .previous - - .section .eh_frame,"a",@progbits -.LSTARTFRAMEDLSI: - .long .LENDCIEDLSI-.LSTARTCIEDLSI -.LSTARTCIEDLSI: - .long 0 /* CIE ID */ - .byte 1 /* Version number */ - .string "zR" /* NUL-terminated augmentation string */ - .uleb128 1 /* Code alignment factor */ - .sleb128 -4 /* Data alignment factor */ - .byte 8 /* Return address register column */ - .uleb128 1 /* Augmentation value length */ - .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */ - .byte 0x0c /* DW_CFA_def_cfa */ - .uleb128 4 - .uleb128 4 - .byte 0x88 /* DW_CFA_offset, column 0x8 */ - .uleb128 1 - .align 4 -.LENDCIEDLSI: - .long .LENDFDEDLSI-.LSTARTFDEDLSI /* Length FDE */ -.LSTARTFDEDLSI: - .long .LSTARTFDEDLSI-.LSTARTFRAMEDLSI /* CIE pointer */ - .long .LSTART_vsyscall-. /* PC-relative start address */ - .long .LEND_vsyscall-.LSTART_vsyscall - .uleb128 0 - .align 4 -.LENDFDEDLSI: - .previous - -/* - * Get the common code for the sigreturn entry points. - */ -#include "vsyscall-sigreturn.S" diff --git a/arch/i386/kernel/vsyscall-int80_32.S b/arch/i386/kernel/vsyscall-int80_32.S new file mode 100644 index 0000000..530d052 --- /dev/null +++ b/arch/i386/kernel/vsyscall-int80_32.S @@ -0,0 +1,53 @@ +/* + * Code for the vsyscall page. This version uses the old int $0x80 method. + * + * NOTE: + * 1) __kernel_vsyscall _must_ be first in this page. + * 2) there are alignment constraints on this stub, see vsyscall-sigreturn.S + * for details. + */ + + .text + .globl __kernel_vsyscall + .type __kernel_vsyscall,@function +__kernel_vsyscall: +.LSTART_vsyscall: + int $0x80 + ret +.LEND_vsyscall: + .size __kernel_vsyscall,.-.LSTART_vsyscall + .previous + + .section .eh_frame,"a",@progbits +.LSTARTFRAMEDLSI: + .long .LENDCIEDLSI-.LSTARTCIEDLSI +.LSTARTCIEDLSI: + .long 0 /* CIE ID */ + .byte 1 /* Version number */ + .string "zR" /* NUL-terminated augmentation string */ + .uleb128 1 /* Code alignment factor */ + .sleb128 -4 /* Data alignment factor */ + .byte 8 /* Return address register column */ + .uleb128 1 /* Augmentation value length */ + .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */ + .byte 0x0c /* DW_CFA_def_cfa */ + .uleb128 4 + .uleb128 4 + .byte 0x88 /* DW_CFA_offset, column 0x8 */ + .uleb128 1 + .align 4 +.LENDCIEDLSI: + .long .LENDFDEDLSI-.LSTARTFDEDLSI /* Length FDE */ +.LSTARTFDEDLSI: + .long .LSTARTFDEDLSI-.LSTARTFRAMEDLSI /* CIE pointer */ + .long .LSTART_vsyscall-. /* PC-relative start address */ + .long .LEND_vsyscall-.LSTART_vsyscall + .uleb128 0 + .align 4 +.LENDFDEDLSI: + .previous + +/* + * Get the common code for the sigreturn entry points. + */ +#include "vsyscall-sigreturn.S" diff --git a/arch/i386/kernel/vsyscall_32.S b/arch/i386/kernel/vsyscall_32.S index b403890..0330744 100644 --- a/arch/i386/kernel/vsyscall_32.S +++ b/arch/i386/kernel/vsyscall_32.S @@ -4,12 +4,12 @@ __INITDATA .globl vsyscall_int80_start, vsyscall_int80_end vsyscall_int80_start: - .incbin "arch/i386/kernel/vsyscall-int80.so" + .incbin "arch/i386/kernel/vsyscall-int80_32.so" vsyscall_int80_end: .globl vsyscall_sysenter_start, vsyscall_sysenter_end vsyscall_sysenter_start: - .incbin "arch/i386/kernel/vsyscall-sysenter.so" + .incbin "arch/i386/kernel/vsyscall-sysenter_32.so" vsyscall_sysenter_end: __FINIT -- cgit v1.1