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yaml
---
r: 14163
b: refs/heads/master
c: 0c37ec2
h: refs/heads/master
i:
  14161: 93dd0ef
  14159: bffc294
v: v3
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Benjamin Herrenschmidt authored and Paul Mackerras committed Nov 14, 2005
1 parent fab7beb commit 394e713
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Showing 8 changed files with 40 additions and 25 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 50092b233afa96b4c9a4b24ac38199c34e0880cd
refs/heads/master: 0c37ec2aa88bd8a6aaeb284ff5c86f4c6d8e8469
6 changes: 4 additions & 2 deletions trunk/arch/powerpc/kernel/asm-offsets.c
Original file line number Diff line number Diff line change
Expand Up @@ -270,13 +270,15 @@ int main(void)
DEFINE(TVAL64_TV_USEC, offsetof(struct timeval, tv_usec));
DEFINE(TVAL32_TV_SEC, offsetof(struct compat_timeval, tv_sec));
DEFINE(TVAL32_TV_USEC, offsetof(struct compat_timeval, tv_usec));
DEFINE(TSPC64_TV_SEC, offsetof(struct timespec, tv_sec));
DEFINE(TSPC64_TV_NSEC, offsetof(struct timespec, tv_nsec));
DEFINE(TSPC32_TV_SEC, offsetof(struct compat_timespec, tv_sec));
DEFINE(TSPC32_TV_NSEC, offsetof(struct compat_timespec, tv_nsec));
#else
DEFINE(TVAL32_TV_SEC, offsetof(struct timeval, tv_sec));
DEFINE(TVAL32_TV_USEC, offsetof(struct timeval, tv_usec));
DEFINE(TSPEC32_TV_SEC, offsetof(struct timespec, tv_sec));
DEFINE(TSPEC32_TV_NSEC, offsetof(struct timespec, tv_nsec));
DEFINE(TSPC32_TV_SEC, offsetof(struct timespec, tv_sec));
DEFINE(TSPC32_TV_NSEC, offsetof(struct timespec, tv_nsec));
#endif
/* timeval/timezone offsets for use by vdso */
DEFINE(TZONE_TZ_MINWEST, offsetof(struct timezone, tz_minuteswest));
Expand Down
3 changes: 2 additions & 1 deletion trunk/arch/powerpc/kernel/vdso32/datapage.S
Original file line number Diff line number Diff line change
Expand Up @@ -77,8 +77,9 @@ V_FUNCTION_BEGIN(__kernel_get_tbfreq)
mflr r12
.cfi_register lr,r12
bl __get_datapage@local
lwz r3,CFG_TB_TICKS_PER_SEC(r3)
lwz r4,(CFG_TB_TICKS_PER_SEC + 4)(r3)
lwz r3,CFG_TB_TICKS_PER_SEC(r3)
mtlr r12
blr
.cfi_endproc
V_FUNCTION_END(__kernel_get_tbfreq)
12 changes: 8 additions & 4 deletions trunk/arch/powerpc/kernel/vdso32/gettimeofday.S
Original file line number Diff line number Diff line change
Expand Up @@ -83,15 +83,15 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)
/* Check for supported clock IDs */
cmpli cr0,r3,CLOCK_REALTIME
cmpli cr1,r3,CLOCK_MONOTONIC
cror cr0,cr0,cr1
cror cr0*4+eq,cr0*4+eq,cr1*4+eq
bne cr0,99f

mflr r12 /* r12 saves lr */
.cfi_register lr,r12
mr r10,r3 /* r10 saves id */
mr r11,r4 /* r11 saves tp */
bl __get_datapage@local /* get data page */
mr r9, r3 /* datapage ptr in r9 */
mr r9,r3 /* datapage ptr in r9 */
beq cr1,50f /* if monotonic -> jump there */

/*
Expand Down Expand Up @@ -173,10 +173,14 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)
add r4,r4,r7
lis r5,NSEC_PER_SEC@h
ori r5,r5,NSEC_PER_SEC@l
cmpli cr0,r4,r5
cmpl cr0,r4,r5
cmpli cr1,r4,0
blt 1f
subf r4,r5,r4
addi r3,r3,1
1: bge cr1,1f
addi r3,r3,-1
add r4,r4,r5
1: stw r3,TSPC32_TV_SEC(r11)
stw r4,TSPC32_TV_NSEC(r11)

Expand Down Expand Up @@ -210,7 +214,7 @@ V_FUNCTION_BEGIN(__kernel_clock_getres)
/* Check for supported clock IDs */
cmpwi cr0,r3,CLOCK_REALTIME
cmpwi cr1,r3,CLOCK_MONOTONIC
cror cr0,cr0,cr1
cror cr0*4+eq,cr0*4+eq,cr1*4+eq
bne cr0,99f

li r3,0
Expand Down
1 change: 1 addition & 0 deletions trunk/arch/powerpc/kernel/vdso64/datapage.S
Original file line number Diff line number Diff line change
Expand Up @@ -80,5 +80,6 @@ V_FUNCTION_BEGIN(__kernel_get_tbfreq)
bl V_LOCAL_FUNC(__get_datapage)
ld r3,CFG_TB_TICKS_PER_SEC(r3)
mtlr r12
blr
.cfi_endproc
V_FUNCTION_END(__kernel_get_tbfreq)
31 changes: 19 additions & 12 deletions trunk/arch/powerpc/kernel/vdso64/gettimeofday.S
Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
/*

/*
* Userland implementation of gettimeofday() for 64 bits processes in a
* ppc64 kernel for use in the vDSO
*
Expand Down Expand Up @@ -68,7 +69,7 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)
/* Check for supported clock IDs */
cmpwi cr0,r3,CLOCK_REALTIME
cmpwi cr1,r3,CLOCK_MONOTONIC
cror cr0,cr0,cr1
cror cr0*4+eq,cr0*4+eq,cr1*4+eq
bne cr0,99f

mflr r12 /* r12 saves lr */
Expand All @@ -84,16 +85,17 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)

bl V_LOCAL_FUNC(__do_get_xsec) /* get xsec from tb & kernel */

lis r7,0x3b9a /* r7 = 1000000000 = NSEC_PER_SEC */
ori r7,r7,0xca00
lis r7,15 /* r7 = 1000000 = USEC_PER_SEC */
ori r7,r7,16960
rldicl r5,r4,44,20 /* r5 = sec = xsec / XSEC_PER_SEC */
rldicr r6,r5,20,43 /* r6 = sec * XSEC_PER_SEC */
std r5,TSPC64_TV_SEC(r11) /* store sec in tv */
subf r0,r6,r4 /* r0 = xsec = (xsec - r6) */
mulld r0,r0,r7 /* nsec = (xsec * NSEC_PER_SEC) /
mulld r0,r0,r7 /* usec = (xsec * USEC_PER_SEC) /
* XSEC_PER_SEC
*/
rldicl r0,r0,44,20
mulli r0,r0,1000 /* nsec = usec * 1000 */
std r0,TSPC64_TV_NSEC(r11) /* store nsec in tp */

mtlr r12
Expand All @@ -106,15 +108,16 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)

50: bl V_LOCAL_FUNC(__do_get_xsec) /* get xsec from tb & kernel */

lis r7,0x3b9a /* r7 = 1000000000 = NSEC_PER_SEC */
ori r7,r7,0xca00
lis r7,15 /* r7 = 1000000 = USEC_PER_SEC */
ori r7,r7,16960
rldicl r5,r4,44,20 /* r5 = sec = xsec / XSEC_PER_SEC */
rldicr r6,r5,20,43 /* r6 = sec * XSEC_PER_SEC */
subf r0,r6,r4 /* r0 = xsec = (xsec - r6) */
mulld r0,r0,r7 /* nsec = (xsec * NSEC_PER_SEC) /
mulld r0,r0,r7 /* usec = (xsec * USEC_PER_SEC) /
* XSEC_PER_SEC
*/
rldicl r6,r0,44,20
mulli r6,r6,1000 /* nsec = usec * 1000 */

/* now we must fixup using wall to monotonic. We need to snapshot
* that value and do the counter trick again. Fortunately, we still
Expand All @@ -123,8 +126,8 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)
* can be used
*/

lwz r4,WTOM_CLOCK_SEC(r9)
lwz r7,WTOM_CLOCK_NSEC(r9)
lwa r4,WTOM_CLOCK_SEC(r3)
lwa r7,WTOM_CLOCK_NSEC(r3)

/* We now have our result in r4,r7. We create a fake dependency
* on that result and re-check the counter
Expand All @@ -144,10 +147,14 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)
add r7,r7,r6
lis r9,NSEC_PER_SEC@h
ori r9,r9,NSEC_PER_SEC@l
cmpli cr0,r7,r9
cmpl cr0,r7,r9
cmpli cr1,r7,0
blt 1f
subf r7,r9,r7
addi r4,r4,1
1: bge cr1,1f
addi r4,r4,-1
add r7,r7,r9
1: std r4,TSPC64_TV_SEC(r11)
std r7,TSPC64_TV_NSEC(r11)

Expand Down Expand Up @@ -181,7 +188,7 @@ V_FUNCTION_BEGIN(__kernel_clock_getres)
/* Check for supported clock IDs */
cmpwi cr0,r3,CLOCK_REALTIME
cmpwi cr1,r3,CLOCK_MONOTONIC
cror cr0,cr0,cr1
cror cr0*4+eq,cr0*4+eq,cr1*4+eq
bne cr0,99f

li r3,0
Expand Down
8 changes: 4 additions & 4 deletions trunk/arch/powerpc/platforms/powermac/time.c
Original file line number Diff line number Diff line change
Expand Up @@ -102,7 +102,7 @@ static unsigned long from_rtc_time(struct rtc_time *tm)
static unsigned long cuda_get_time(void)
{
struct adb_request req;
unsigned long now;
unsigned int now;

if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
return 0;
Expand All @@ -113,7 +113,7 @@ static unsigned long cuda_get_time(void)
req.reply_len);
now = (req.reply[3] << 24) + (req.reply[4] << 16)
+ (req.reply[5] << 8) + req.reply[6];
return now - RTC_OFFSET;
return ((unsigned long)now) - RTC_OFFSET;
}

#define cuda_get_rtc_time(tm) to_rtc_time(cuda_get_time(), (tm))
Expand Down Expand Up @@ -146,7 +146,7 @@ static int cuda_set_rtc_time(struct rtc_time *tm)
static unsigned long pmu_get_time(void)
{
struct adb_request req;
unsigned long now;
unsigned int now;

if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
return 0;
Expand All @@ -156,7 +156,7 @@ static unsigned long pmu_get_time(void)
req.reply_len);
now = (req.reply[0] << 24) + (req.reply[1] << 16)
+ (req.reply[2] << 8) + req.reply[3];
return now - RTC_OFFSET;
return ((unsigned long)now) - RTC_OFFSET;
}

#define pmu_get_rtc_time(tm) to_rtc_time(pmu_get_time(), (tm))
Expand Down
2 changes: 1 addition & 1 deletion trunk/include/asm-powerpc/vdso_datapage.h
Original file line number Diff line number Diff line change
Expand Up @@ -73,7 +73,7 @@ struct vdso_data {
/* those additional ones don't have to be located anywhere
* special as they were not part of the original systemcfg
*/
__s64 wtom_clock_sec; /* Wall to monotonic clock */
__s32 wtom_clock_sec; /* Wall to monotonic clock */
__s32 wtom_clock_nsec;
__u32 syscall_map_64[SYSCALL_MAP_SIZE]; /* map of syscalls */
__u32 syscall_map_32[SYSCALL_MAP_SIZE]; /* map of syscalls */
Expand Down

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