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- #include <_lfs_64.h>
- #define _ERRNO_H
- #include <bits/errno.h>
- #include <sys/syscall.h>
- #include <bits/arm_asm.h>
- #include <bits/arm_bx.h>
- #ifdef __NR_mmap2
- .text
- .global mmap64
- .type mmap64,%function
- .align 2
- #ifdef __ARM_EABI__
- #if defined(THUMB1_ONLY)
- .thumb_func
- mmap64:
- #ifdef __ARMEB__
- # define LOW_OFFSET 12 + 8 + 4
- # define HIGH_OFFSET 12 + 8 + 0
- #else
- # define LOW_OFFSET 12 + 8 + 0
- # define HIGH_OFFSET 12 + 8 + 4
- #endif
- push {r4, r5, r6}
- ldr r6, [sp, $LOW_OFFSET]
- ldr r5, [sp, $HIGH_OFFSET]
- lsl r4, r6, #20
- bne .Linval
- lsr r4, r5, #12
- bne .Linval
-
- lsr r6, r6, #12
- lsl r5, r5, #20
- orr r5, r5, r6
- ldr r4, [sp, #8]
- DO_CALL (mmap2)
- ldr r1, =0xfffff000
- cmp r0, r1
- bcs .Lerror
- bx lr
- .Linval:
- ldr r0, =-EINVAL
- pop {r4, r5, r6}
- .Lerror:
- push {r3, lr}
- bl __syscall_error
- POP_RET
- .pool
- #else
- mmap64:
- #ifdef __ARMEB__
- # define LOW_OFFSET 8 + 4
- # define HIGH_OFFSET 4 + 8 + 0
- #else
- # define LOW_OFFSET 8 + 0
- # define HIGH_OFFSET 4 + 8 + 4
- #endif
- ldr ip, [sp, $LOW_OFFSET]
- str r5, [sp, #-4]!
- ldr r5, [sp, $HIGH_OFFSET]
- str r4, [sp, #-4]!
- movs r4, ip, lsl $20
- mov ip, ip, lsr $12
- IT(t, eq)
- moveqs r4, r5, lsr $12
- bne .Linval
- ldr r4, [sp, $8]
- orr r5, ip, r5, lsl $20
- DO_CALL (mmap2)
- cmn r0, $4096
- ldmfd sp!, {r4, r5}
- IT(t, cc)
- BXC(cc, lr)
- b __syscall_error
- .Linval:
- mov r0, $-EINVAL
- ldmfd sp!, {r4, r5}
- b __syscall_error
- #endif
- #else
- mmap64:
- stmfd sp!, {r4, r5, lr}
- ldr r5, [sp, $16]
- ldr r4, [sp, $12]
- movs ip, r5, lsl $20
- bne .Linval
- ldr ip, [sp, $20]
- mov r5, r5, lsr $12
- orr r5, r5, ip, lsl $20
- movs ip, ip, lsr $12
- bne .Linval
- mov ip, r0
- DO_CALL (mmap2)
- cmn r0, $4096
- ldmccfd sp!, {r4, r5, pc}
- cmn r0, $ENOSYS
- ldmnefd sp!, {r4, r5, lr}
- bne __error
-
- ldr r5, [sp, $20]
- mov r0, ip
- teq r5, $0
- ldmeqfd sp!, {r4, r5, lr}
- beq HIDDEN_JUMPTARGET(mmap)
- .Linval:
- mov r0, $-EINVAL
- ldmfd sp!, {r4, r5, lr}
- b __error
- __error:
- b __syscall_error
- #endif
- .size mmap64,.-mmap64
- #endif
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