bionic/libc/kernel/common/linux/jiffies.h
Elliott Hughes 40596aa005 Make cpp.py less braindead.
The old code ignored operator precedence (!), despite having two tables
of operator precedence. The code's still pretty awful, but I've cleaned
it up enough to fix this, the most important bug.

This patch lets us correctly clean the uapi unistd.h, stat.h, and swab.h files,
and also fixes the mess we were already making of various old kernel
header files. I've added a bunch more tests, fixed the existing tests that
the existing script was already failing (!), and changed the script so that
the tests are run every time the script is run.

We can probably remove some of the old kernel header files that we were
parsing incorrectly, but we can worry about that later.

Bug: 11253477
Change-Id: Ie66c65b3a7ae13b4e98ed8038a6a534f06eae0e5
2013-11-06 12:04:48 -08:00

131 lines
5.7 KiB
C

/****************************************************************************
****************************************************************************
***
*** This header was automatically generated from a Linux kernel header
*** of the same name, to make information necessary for userspace to
*** call into the kernel available to libc. It contains only constants,
*** structures, and macros generated from the original header, and thus,
*** contains no copyrightable information.
***
*** To edit the content of this header, modify the corresponding
*** source file (e.g. under external/kernel-headers/original/) then
*** run bionic/libc/kernel/tools/update_all.py
***
*** Any manual change here will be lost the next time this script will
*** be run. You've been warned!
***
****************************************************************************
****************************************************************************/
#ifndef _LINUX_JIFFIES_H
#define _LINUX_JIFFIES_H
#include <linux/calc64.h>
#include <linux/kernel.h>
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#include <linux/types.h>
#include <linux/time.h>
#include <linux/timex.h>
#include <asm/param.h>
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#if HZ >= 12 && HZ < 24
#define SHIFT_HZ 4
#elif HZ >= 24 && HZ < 48
#define SHIFT_HZ 5
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#elif HZ >= 48 && HZ < 96
#define SHIFT_HZ 6
#elif HZ >= 96 && HZ < 192
#define SHIFT_HZ 7
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#elif HZ >= 192 && HZ < 384
#define SHIFT_HZ 8
#elif HZ >= 384 && HZ < 768
#define SHIFT_HZ 9
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#elif HZ >= 768 && HZ < 1536
#define SHIFT_HZ 10
#else
#error You lose.
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#endif
#define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ)
#define LATCH_HPET ((HPET_TICK_RATE + HZ/2) / HZ)
#define SH_DIV(NOM,DEN,LSH) ( (((NOM) / (DEN)) << (LSH)) + ((((NOM) % (DEN)) << (LSH)) + (DEN) / 2) / (DEN))
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#define ACTHZ (SH_DIV (CLOCK_TICK_RATE, LATCH, 8))
#define ACTHZ_HPET (SH_DIV (HPET_TICK_RATE, LATCH_HPET, 8))
#define TICK_NSEC (SH_DIV (1000000UL * 1000, ACTHZ, 8))
#define TICK_NSEC_HPET (SH_DIV(1000000UL * 1000, ACTHZ_HPET, 8))
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#define TICK_USEC ((1000000UL + USER_HZ/2) / USER_HZ)
#define TICK_USEC_TO_NSEC(TUSEC) (SH_DIV (TUSEC * USER_HZ * 1000, ACTHZ, 8))
#define __jiffy_data __attribute__((section(".data")))
#if BITS_PER_LONG < 64
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#else
#endif
#define time_after(a,b) (typecheck(unsigned long, a) && typecheck(unsigned long, b) && ((long)(b) - (long)(a) < 0))
#define time_before(a,b) time_after(b,a)
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#define time_after_eq(a,b) (typecheck(unsigned long, a) && typecheck(unsigned long, b) && ((long)(a) - (long)(b) >= 0))
#define time_before_eq(a,b) time_after_eq(b,a)
#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))
#define MAX_JIFFY_OFFSET ((~0UL >> 1)-1)
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#define SEC_JIFFIE_SC (31 - SHIFT_HZ)
#if !((NSEC_PER_SEC << 2) / TICK_NSEC << SEC_JIFFIE_SC - 2 & 0x80000000)
#undef SEC_JIFFIE_SC
#define SEC_JIFFIE_SC (32 - SHIFT_HZ)
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#endif
#define NSEC_JIFFIE_SC (SEC_JIFFIE_SC + 29)
#define USEC_JIFFIE_SC (SEC_JIFFIE_SC + 19)
#define SEC_CONVERSION ((unsigned long)((((u64)NSEC_PER_SEC << SEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC))
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#define NSEC_CONVERSION ((unsigned long)((((u64)1 << NSEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC))
#define USEC_CONVERSION ((unsigned long)((((u64)NSEC_PER_USEC << USEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC))
#define USEC_ROUND (u64)(((u64)1 << USEC_JIFFIE_SC) - 1)
#if BITS_PER_LONG < 64
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#define MAX_SEC_IN_JIFFIES (long)((u64)((u64)MAX_JIFFY_OFFSET * TICK_NSEC) / NSEC_PER_SEC)
#else
#define MAX_SEC_IN_JIFFIES (SH_DIV((MAX_JIFFY_OFFSET >> SEC_JIFFIE_SC) * TICK_NSEC, NSEC_PER_SEC, 1) - 1)
#endif
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)
#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC)
#else
#endif
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#if HZ <= USEC_PER_SEC && !(USEC_PER_SEC % HZ)
#elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC)
#else
#endif
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)
#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC)
#else
#endif
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#if HZ <= USEC_PER_SEC && !(USEC_PER_SEC % HZ)
#elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC)
#else
#endif
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#if TICK_NSEC % NSEC_PER_SEC / USER_HZ == 0
#else
#endif
#if HZ % USER_HZ == 0
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#else
#endif
#if TICK_NSEC % NSEC_PER_SEC / USER_HZ == 0
#else
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#endif
#if NSEC_PER_SEC % USER_HZ == 0
#elif (USER_HZ % 512) == 0
#else
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#endif
#endif