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author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2016-06-20 15:03:52 +0300 |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-06-28 10:32:34 +0300 |
commit | a4d9b97cc3c215a2dd6e841ee203db7b7e73b3c9 (patch) | |
tree | fae001b35644b0096cc48aec9c875e3f617a7193 /drivers/s390 | |
parent | 7b4ff87cbf3d2530d6362bb08cc61635894f596c (diff) | |
download | linux-a4d9b97cc3c215a2dd6e841ee203db7b7e73b3c9.tar.xz |
s390/cio: use basic blocks for i/o inline assemblies
Use only simple inline assemblies which consist of a single basic
block if the register asm construct is being used.
Otherwise gcc would generate broken code if the compiler option
--sanitize-coverage=trace-pc would be used.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r-- | drivers/s390/cio/ioasm.c | 91 |
1 files changed, 82 insertions, 9 deletions
diff --git a/drivers/s390/cio/ioasm.c b/drivers/s390/cio/ioasm.c index 98984818618f..8225da619014 100644 --- a/drivers/s390/cio/ioasm.c +++ b/drivers/s390/cio/ioasm.c @@ -12,7 +12,7 @@ #include "orb.h" #include "cio.h" -int stsch(struct subchannel_id schid, struct schib *addr) +static inline int __stsch(struct subchannel_id schid, struct schib *addr) { register struct subchannel_id reg1 asm ("1") = schid; int ccode = -EIO; @@ -26,13 +26,21 @@ int stsch(struct subchannel_id schid, struct schib *addr) : "+d" (ccode), "=m" (*addr) : "d" (reg1), "a" (addr) : "cc"); + return ccode; +} + +int stsch(struct subchannel_id schid, struct schib *addr) +{ + int ccode; + + ccode = __stsch(schid, addr); trace_s390_cio_stsch(schid, addr, ccode); return ccode; } EXPORT_SYMBOL(stsch); -int msch(struct subchannel_id schid, struct schib *addr) +static inline int __msch(struct subchannel_id schid, struct schib *addr) { register struct subchannel_id reg1 asm ("1") = schid; int ccode = -EIO; @@ -46,12 +54,20 @@ int msch(struct subchannel_id schid, struct schib *addr) : "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc"); + return ccode; +} + +int msch(struct subchannel_id schid, struct schib *addr) +{ + int ccode; + + ccode = __msch(schid, addr); trace_s390_cio_msch(schid, addr, ccode); return ccode; } -int tsch(struct subchannel_id schid, struct irb *addr) +static inline int __tsch(struct subchannel_id schid, struct irb *addr) { register struct subchannel_id reg1 asm ("1") = schid; int ccode; @@ -63,12 +79,20 @@ int tsch(struct subchannel_id schid, struct irb *addr) : "=d" (ccode), "=m" (*addr) : "d" (reg1), "a" (addr) : "cc"); + return ccode; +} + +int tsch(struct subchannel_id schid, struct irb *addr) +{ + int ccode; + + ccode = __tsch(schid, addr); trace_s390_cio_tsch(schid, addr, ccode); return ccode; } -int ssch(struct subchannel_id schid, union orb *addr) +static inline int __ssch(struct subchannel_id schid, union orb *addr) { register struct subchannel_id reg1 asm("1") = schid; int ccode = -EIO; @@ -82,13 +106,21 @@ int ssch(struct subchannel_id schid, union orb *addr) : "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc", "memory"); + return ccode; +} + +int ssch(struct subchannel_id schid, union orb *addr) +{ + int ccode; + + ccode = __ssch(schid, addr); trace_s390_cio_ssch(schid, addr, ccode); return ccode; } EXPORT_SYMBOL(ssch); -int csch(struct subchannel_id schid) +static inline int __csch(struct subchannel_id schid) { register struct subchannel_id reg1 asm("1") = schid; int ccode; @@ -100,6 +132,14 @@ int csch(struct subchannel_id schid) : "=d" (ccode) : "d" (reg1) : "cc"); + return ccode; +} + +int csch(struct subchannel_id schid) +{ + int ccode; + + ccode = __csch(schid); trace_s390_cio_csch(schid, ccode); return ccode; @@ -140,7 +180,7 @@ int chsc(void *chsc_area) } EXPORT_SYMBOL(chsc); -int rchp(struct chp_id chpid) +static inline int __rchp(struct chp_id chpid) { register struct chp_id reg1 asm ("1") = chpid; int ccode; @@ -151,12 +191,20 @@ int rchp(struct chp_id chpid) " ipm %0\n" " srl %0,28" : "=d" (ccode) : "d" (reg1) : "cc"); + return ccode; +} + +int rchp(struct chp_id chpid) +{ + int ccode; + + ccode = __rchp(chpid); trace_s390_cio_rchp(chpid, ccode); return ccode; } -int rsch(struct subchannel_id schid) +static inline int __rsch(struct subchannel_id schid) { register struct subchannel_id reg1 asm("1") = schid; int ccode; @@ -168,12 +216,21 @@ int rsch(struct subchannel_id schid) : "=d" (ccode) : "d" (reg1) : "cc", "memory"); + + return ccode; +} + +int rsch(struct subchannel_id schid) +{ + int ccode; + + ccode = __rsch(schid); trace_s390_cio_rsch(schid, ccode); return ccode; } -int hsch(struct subchannel_id schid) +static inline int __hsch(struct subchannel_id schid) { register struct subchannel_id reg1 asm("1") = schid; int ccode; @@ -185,12 +242,20 @@ int hsch(struct subchannel_id schid) : "=d" (ccode) : "d" (reg1) : "cc"); + return ccode; +} + +int hsch(struct subchannel_id schid) +{ + int ccode; + + ccode = __hsch(schid); trace_s390_cio_hsch(schid, ccode); return ccode; } -int xsch(struct subchannel_id schid) +static inline int __xsch(struct subchannel_id schid) { register struct subchannel_id reg1 asm("1") = schid; int ccode; @@ -202,6 +267,14 @@ int xsch(struct subchannel_id schid) : "=d" (ccode) : "d" (reg1) : "cc"); + return ccode; +} + +int xsch(struct subchannel_id schid) +{ + int ccode; + + ccode = __xsch(schid); trace_s390_cio_xsch(schid, ccode); return ccode; |