/*
* Get the common code for the sigreturn entry points.
*/
-#include "vsyscall-sigreturn.S"
+#include "vsyscall-sigreturn_32.S"
+++ /dev/null
-/*
- * Common code for the sigreturn entry points on the vsyscall page.
- * So far this code is the same for both int80 and sysenter versions.
- * This file is #include'd by vsyscall-*.S to define them after the
- * vsyscall entry point. The kernel assumes that the addresses of these
- * routines are constant for all vsyscall implementations.
- */
-
-#include <asm/unistd.h>
-#include <asm/asm-offsets.h>
-
-
-/* XXX
- Should these be named "_sigtramp" or something?
-*/
-
- .text
- .org __kernel_vsyscall+32,0x90
- .globl __kernel_sigreturn
- .type __kernel_sigreturn,@function
-__kernel_sigreturn:
-.LSTART_sigreturn:
- popl %eax /* XXX does this mean it needs unwind info? */
- movl $__NR_sigreturn, %eax
- int $0x80
-.LEND_sigreturn:
- .size __kernel_sigreturn,.-.LSTART_sigreturn
-
- .balign 32
- .globl __kernel_rt_sigreturn
- .type __kernel_rt_sigreturn,@function
-__kernel_rt_sigreturn:
-.LSTART_rt_sigreturn:
- movl $__NR_rt_sigreturn, %eax
- int $0x80
-.LEND_rt_sigreturn:
- .size __kernel_rt_sigreturn,.-.LSTART_rt_sigreturn
- .balign 32
- .previous
-
- .section .eh_frame,"a",@progbits
-.LSTARTFRAMEDLSI1:
- .long .LENDCIEDLSI1-.LSTARTCIEDLSI1
-.LSTARTCIEDLSI1:
- .long 0 /* CIE ID */
- .byte 1 /* Version number */
- .string "zRS" /* 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 0 /* DW_CFA_nop */
- .align 4
-.LENDCIEDLSI1:
- .long .LENDFDEDLSI1-.LSTARTFDEDLSI1 /* Length FDE */
-.LSTARTFDEDLSI1:
- .long .LSTARTFDEDLSI1-.LSTARTFRAMEDLSI1 /* CIE pointer */
- /* HACK: The dwarf2 unwind routines will subtract 1 from the
- return address to get an address in the middle of the
- presumed call instruction. Since we didn't get here via
- a call, we need to include the nop before the real start
- to make up for it. */
- .long .LSTART_sigreturn-1-. /* PC-relative start address */
- .long .LEND_sigreturn-.LSTART_sigreturn+1
- .uleb128 0 /* Augmentation */
- /* What follows are the instructions for the table generation.
- We record the locations of each register saved. This is
- complicated by the fact that the "CFA" is always assumed to
- be the value of the stack pointer in the caller. This means
- that we must define the CFA of this body of code to be the
- saved value of the stack pointer in the sigcontext. Which
- also means that there is no fixed relation to the other
- saved registers, which means that we must use DW_CFA_expression
- to compute their addresses. It also means that when we
- adjust the stack with the popl, we have to do it all over again. */
-
-#define do_cfa_expr(offset) \
- .byte 0x0f; /* DW_CFA_def_cfa_expression */ \
- .uleb128 1f-0f; /* length */ \
-0: .byte 0x74; /* DW_OP_breg4 */ \
- .sleb128 offset; /* offset */ \
- .byte 0x06; /* DW_OP_deref */ \
-1:
-
-#define do_expr(regno, offset) \
- .byte 0x10; /* DW_CFA_expression */ \
- .uleb128 regno; /* regno */ \
- .uleb128 1f-0f; /* length */ \
-0: .byte 0x74; /* DW_OP_breg4 */ \
- .sleb128 offset; /* offset */ \
-1:
-
- do_cfa_expr(SIGCONTEXT_esp+4)
- do_expr(0, SIGCONTEXT_eax+4)
- do_expr(1, SIGCONTEXT_ecx+4)
- do_expr(2, SIGCONTEXT_edx+4)
- do_expr(3, SIGCONTEXT_ebx+4)
- do_expr(5, SIGCONTEXT_ebp+4)
- do_expr(6, SIGCONTEXT_esi+4)
- do_expr(7, SIGCONTEXT_edi+4)
- do_expr(8, SIGCONTEXT_eip+4)
-
- .byte 0x42 /* DW_CFA_advance_loc 2 -- nop; popl eax. */
-
- do_cfa_expr(SIGCONTEXT_esp)
- do_expr(0, SIGCONTEXT_eax)
- do_expr(1, SIGCONTEXT_ecx)
- do_expr(2, SIGCONTEXT_edx)
- do_expr(3, SIGCONTEXT_ebx)
- do_expr(5, SIGCONTEXT_ebp)
- do_expr(6, SIGCONTEXT_esi)
- do_expr(7, SIGCONTEXT_edi)
- do_expr(8, SIGCONTEXT_eip)
-
- .align 4
-.LENDFDEDLSI1:
-
- .long .LENDFDEDLSI2-.LSTARTFDEDLSI2 /* Length FDE */
-.LSTARTFDEDLSI2:
- .long .LSTARTFDEDLSI2-.LSTARTFRAMEDLSI1 /* CIE pointer */
- /* HACK: See above wrt unwind library assumptions. */
- .long .LSTART_rt_sigreturn-1-. /* PC-relative start address */
- .long .LEND_rt_sigreturn-.LSTART_rt_sigreturn+1
- .uleb128 0 /* Augmentation */
- /* What follows are the instructions for the table generation.
- We record the locations of each register saved. This is
- slightly less complicated than the above, since we don't
- modify the stack pointer in the process. */
-
- do_cfa_expr(RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_esp)
- do_expr(0, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_eax)
- do_expr(1, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_ecx)
- do_expr(2, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_edx)
- do_expr(3, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_ebx)
- do_expr(5, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_ebp)
- do_expr(6, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_esi)
- do_expr(7, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_edi)
- do_expr(8, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_eip)
-
- .align 4
-.LENDFDEDLSI2:
- .previous
--- /dev/null
+/*
+ * Common code for the sigreturn entry points on the vsyscall page.
+ * So far this code is the same for both int80 and sysenter versions.
+ * This file is #include'd by vsyscall-*.S to define them after the
+ * vsyscall entry point. The kernel assumes that the addresses of these
+ * routines are constant for all vsyscall implementations.
+ */
+
+#include <asm/unistd.h>
+#include <asm/asm-offsets.h>
+
+
+/* XXX
+ Should these be named "_sigtramp" or something?
+*/
+
+ .text
+ .org __kernel_vsyscall+32,0x90
+ .globl __kernel_sigreturn
+ .type __kernel_sigreturn,@function
+__kernel_sigreturn:
+.LSTART_sigreturn:
+ popl %eax /* XXX does this mean it needs unwind info? */
+ movl $__NR_sigreturn, %eax
+ int $0x80
+.LEND_sigreturn:
+ .size __kernel_sigreturn,.-.LSTART_sigreturn
+
+ .balign 32
+ .globl __kernel_rt_sigreturn
+ .type __kernel_rt_sigreturn,@function
+__kernel_rt_sigreturn:
+.LSTART_rt_sigreturn:
+ movl $__NR_rt_sigreturn, %eax
+ int $0x80
+.LEND_rt_sigreturn:
+ .size __kernel_rt_sigreturn,.-.LSTART_rt_sigreturn
+ .balign 32
+ .previous
+
+ .section .eh_frame,"a",@progbits
+.LSTARTFRAMEDLSI1:
+ .long .LENDCIEDLSI1-.LSTARTCIEDLSI1
+.LSTARTCIEDLSI1:
+ .long 0 /* CIE ID */
+ .byte 1 /* Version number */
+ .string "zRS" /* 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 0 /* DW_CFA_nop */
+ .align 4
+.LENDCIEDLSI1:
+ .long .LENDFDEDLSI1-.LSTARTFDEDLSI1 /* Length FDE */
+.LSTARTFDEDLSI1:
+ .long .LSTARTFDEDLSI1-.LSTARTFRAMEDLSI1 /* CIE pointer */
+ /* HACK: The dwarf2 unwind routines will subtract 1 from the
+ return address to get an address in the middle of the
+ presumed call instruction. Since we didn't get here via
+ a call, we need to include the nop before the real start
+ to make up for it. */
+ .long .LSTART_sigreturn-1-. /* PC-relative start address */
+ .long .LEND_sigreturn-.LSTART_sigreturn+1
+ .uleb128 0 /* Augmentation */
+ /* What follows are the instructions for the table generation.
+ We record the locations of each register saved. This is
+ complicated by the fact that the "CFA" is always assumed to
+ be the value of the stack pointer in the caller. This means
+ that we must define the CFA of this body of code to be the
+ saved value of the stack pointer in the sigcontext. Which
+ also means that there is no fixed relation to the other
+ saved registers, which means that we must use DW_CFA_expression
+ to compute their addresses. It also means that when we
+ adjust the stack with the popl, we have to do it all over again. */
+
+#define do_cfa_expr(offset) \
+ .byte 0x0f; /* DW_CFA_def_cfa_expression */ \
+ .uleb128 1f-0f; /* length */ \
+0: .byte 0x74; /* DW_OP_breg4 */ \
+ .sleb128 offset; /* offset */ \
+ .byte 0x06; /* DW_OP_deref */ \
+1:
+
+#define do_expr(regno, offset) \
+ .byte 0x10; /* DW_CFA_expression */ \
+ .uleb128 regno; /* regno */ \
+ .uleb128 1f-0f; /* length */ \
+0: .byte 0x74; /* DW_OP_breg4 */ \
+ .sleb128 offset; /* offset */ \
+1:
+
+ do_cfa_expr(SIGCONTEXT_esp+4)
+ do_expr(0, SIGCONTEXT_eax+4)
+ do_expr(1, SIGCONTEXT_ecx+4)
+ do_expr(2, SIGCONTEXT_edx+4)
+ do_expr(3, SIGCONTEXT_ebx+4)
+ do_expr(5, SIGCONTEXT_ebp+4)
+ do_expr(6, SIGCONTEXT_esi+4)
+ do_expr(7, SIGCONTEXT_edi+4)
+ do_expr(8, SIGCONTEXT_eip+4)
+
+ .byte 0x42 /* DW_CFA_advance_loc 2 -- nop; popl eax. */
+
+ do_cfa_expr(SIGCONTEXT_esp)
+ do_expr(0, SIGCONTEXT_eax)
+ do_expr(1, SIGCONTEXT_ecx)
+ do_expr(2, SIGCONTEXT_edx)
+ do_expr(3, SIGCONTEXT_ebx)
+ do_expr(5, SIGCONTEXT_ebp)
+ do_expr(6, SIGCONTEXT_esi)
+ do_expr(7, SIGCONTEXT_edi)
+ do_expr(8, SIGCONTEXT_eip)
+
+ .align 4
+.LENDFDEDLSI1:
+
+ .long .LENDFDEDLSI2-.LSTARTFDEDLSI2 /* Length FDE */
+.LSTARTFDEDLSI2:
+ .long .LSTARTFDEDLSI2-.LSTARTFRAMEDLSI1 /* CIE pointer */
+ /* HACK: See above wrt unwind library assumptions. */
+ .long .LSTART_rt_sigreturn-1-. /* PC-relative start address */
+ .long .LEND_rt_sigreturn-.LSTART_rt_sigreturn+1
+ .uleb128 0 /* Augmentation */
+ /* What follows are the instructions for the table generation.
+ We record the locations of each register saved. This is
+ slightly less complicated than the above, since we don't
+ modify the stack pointer in the process. */
+
+ do_cfa_expr(RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_esp)
+ do_expr(0, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_eax)
+ do_expr(1, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_ecx)
+ do_expr(2, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_edx)
+ do_expr(3, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_ebx)
+ do_expr(5, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_ebp)
+ do_expr(6, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_esi)
+ do_expr(7, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_edi)
+ do_expr(8, RT_SIGFRAME_sigcontext-4 + SIGCONTEXT_eip)
+
+ .align 4
+.LENDFDEDLSI2:
+ .previous
/*
* Get the common code for the sigreturn entry points.
*/
-#include "vsyscall-sigreturn.S"
+#include "vsyscall-sigreturn_32.S"
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff