diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/s390/kernel/vdso64/clock_gettime.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/s390/kernel/vdso64/clock_gettime.S | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/ANDROID_3.4.5/arch/s390/kernel/vdso64/clock_gettime.S b/ANDROID_3.4.5/arch/s390/kernel/vdso64/clock_gettime.S deleted file mode 100644 index d46c95ed..00000000 --- a/ANDROID_3.4.5/arch/s390/kernel/vdso64/clock_gettime.S +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Userland implementation of clock_gettime() for 64 bits processes in a - * s390 kernel for use in the vDSO - * - * Copyright IBM Corp. 2008 - * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License (version 2 only) - * as published by the Free Software Foundation. - */ -#include <asm/vdso.h> -#include <asm/asm-offsets.h> -#include <asm/unistd.h> - - .text - .align 4 - .globl __kernel_clock_gettime - .type __kernel_clock_gettime,@function -__kernel_clock_gettime: - .cfi_startproc - larl %r5,_vdso_data - cghi %r2,__CLOCK_REALTIME - je 4f - cghi %r2,-2 /* CLOCK_THREAD_CPUTIME_ID for this thread */ - je 9f - cghi %r2,__CLOCK_MONOTONIC - jne 12f - - /* CLOCK_MONOTONIC */ - ltgr %r3,%r3 - jz 3f /* tp == NULL */ -0: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */ - tmll %r4,0x0001 /* pending update ? loop */ - jnz 0b - stck 48(%r15) /* Store TOD clock */ - lg %r1,48(%r15) - sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ - msgf %r1,__VDSO_NTP_MULT(%r5) /* * NTP adjustment */ - srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */ - alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime */ - lg %r0,__VDSO_XTIME_SEC(%r5) - alg %r1,__VDSO_WTOM_NSEC(%r5) /* + wall_to_monotonic */ - alg %r0,__VDSO_WTOM_SEC(%r5) - clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */ - jne 0b - larl %r5,13f -1: clg %r1,0(%r5) - jl 2f - slg %r1,0(%r5) - aghi %r0,1 - j 1b -2: stg %r0,0(%r3) /* store tp->tv_sec */ - stg %r1,8(%r3) /* store tp->tv_nsec */ -3: lghi %r2,0 - br %r14 - - /* CLOCK_REALTIME */ -4: ltr %r3,%r3 /* tp == NULL */ - jz 8f -5: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */ - tmll %r4,0x0001 /* pending update ? loop */ - jnz 5b - stck 48(%r15) /* Store TOD clock */ - lg %r1,48(%r15) - sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ - msgf %r1,__VDSO_NTP_MULT(%r5) /* * NTP adjustment */ - srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */ - alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime */ - lg %r0,__VDSO_XTIME_SEC(%r5) - clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */ - jne 5b - larl %r5,13f -6: clg %r1,0(%r5) - jl 7f - slg %r1,0(%r5) - aghi %r0,1 - j 6b -7: stg %r0,0(%r3) /* store tp->tv_sec */ - stg %r1,8(%r3) /* store tp->tv_nsec */ -8: lghi %r2,0 - br %r14 - - /* CLOCK_THREAD_CPUTIME_ID for this thread */ -9: icm %r0,15,__VDSO_ECTG_OK(%r5) - jz 12f - ear %r2,%a4 - llilh %r4,0x0100 - sar %a4,%r4 - lghi %r4,0 - epsw %r5,0 - sacf 512 /* Magic ectg instruction */ - .insn ssf,0xc80100000000,__VDSO_ECTG_BASE(4),__VDSO_ECTG_USER(4),4 - tml %r5,0x4000 - jo 11f - tml %r5,0x8000 - jno 10f - sacf 256 - j 11f -10: sacf 0 -11: sar %a4,%r2 - algr %r1,%r0 /* r1 = cputime as TOD value */ - mghi %r1,1000 /* convert to nanoseconds */ - srlg %r1,%r1,12 /* r1 = cputime in nanosec */ - lgr %r4,%r1 - larl %r5,13f - srlg %r1,%r1,9 /* divide by 1000000000 */ - mlg %r0,8(%r5) - srlg %r0,%r0,11 /* r0 = tv_sec */ - stg %r0,0(%r3) - msg %r0,0(%r5) /* calculate tv_nsec */ - slgr %r4,%r0 /* r4 = tv_nsec */ - stg %r4,8(%r3) - lghi %r2,0 - br %r14 - - /* Fallback to system call */ -12: lghi %r1,__NR_clock_gettime - svc 0 - br %r14 - -13: .quad 1000000000 -14: .quad 19342813113834067 - .cfi_endproc - .size __kernel_clock_gettime,.-__kernel_clock_gettime |