diff options
author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-10-06 19:53:53 +0400 |
---|---|---|
committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-10-09 11:14:13 +0400 |
commit | 8070361799ae1e3f4ef347bd10f0a508ac10acfb (patch) | |
tree | 9846c0633cd28a86dc62eca55a4268fed513fcfd /arch/s390/include/uapi | |
parent | 42f4dd613fe808676126472bbe1283e452201148 (diff) | |
download | linux-8070361799ae1e3f4ef347bd10f0a508ac10acfb.tar.xz |
s390: add support for vector extension
The vector extension introduces 32 128-bit vector registers and a set of
instruction to operate on the vector registers.
The kernel can control the use of vector registers for the problem state
program with a bit in control register 0. Once enabled for a process the
kernel needs to retain the content of the vector registers on context
switch. The signal frame is extended to include the vector registers.
Two new register sets NT_S390_VXRS_LOW and NT_S390_VXRS_HIGH are added
to the regset interface for the debugger and core dumps.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/uapi')
-rw-r--r-- | arch/s390/include/uapi/asm/sigcontext.h | 20 | ||||
-rw-r--r-- | arch/s390/include/uapi/asm/types.h | 4 | ||||
-rw-r--r-- | arch/s390/include/uapi/asm/ucontext.h | 15 |
3 files changed, 30 insertions, 9 deletions
diff --git a/arch/s390/include/uapi/asm/sigcontext.h b/arch/s390/include/uapi/asm/sigcontext.h index b30de9c01bbe..5f0b8d7ddb0b 100644 --- a/arch/s390/include/uapi/asm/sigcontext.h +++ b/arch/s390/include/uapi/asm/sigcontext.h @@ -7,10 +7,14 @@ #define _ASM_S390_SIGCONTEXT_H #include <linux/compiler.h> +#include <linux/types.h> -#define __NUM_GPRS 16 -#define __NUM_FPRS 16 -#define __NUM_ACRS 16 +#define __NUM_GPRS 16 +#define __NUM_FPRS 16 +#define __NUM_ACRS 16 +#define __NUM_VXRS 32 +#define __NUM_VXRS_LOW 16 +#define __NUM_VXRS_HIGH 16 #ifndef __s390x__ @@ -59,6 +63,16 @@ typedef struct _s390_fp_regs fpregs; } _sigregs; +typedef struct +{ +#ifndef __s390x__ + unsigned long gprs_high[__NUM_GPRS]; +#endif + unsigned long long vxrs_low[__NUM_VXRS_LOW]; + __vector128 vxrs_high[__NUM_VXRS_HIGH]; + unsigned char __reserved[128]; +} _sigregs_ext; + struct sigcontext { unsigned long oldmask[_SIGCONTEXT_NSIG_WORDS]; diff --git a/arch/s390/include/uapi/asm/types.h b/arch/s390/include/uapi/asm/types.h index 038f2b9178a4..3c3951e3415b 100644 --- a/arch/s390/include/uapi/asm/types.h +++ b/arch/s390/include/uapi/asm/types.h @@ -17,6 +17,10 @@ typedef unsigned long addr_t; typedef __signed__ long saddr_t; +typedef struct { + __u32 u[4]; +} __vector128; + #endif /* __ASSEMBLY__ */ #endif /* _UAPI_S390_TYPES_H */ diff --git a/arch/s390/include/uapi/asm/ucontext.h b/arch/s390/include/uapi/asm/ucontext.h index 3e077b2a4705..64a69aa5dde0 100644 --- a/arch/s390/include/uapi/asm/ucontext.h +++ b/arch/s390/include/uapi/asm/ucontext.h @@ -7,10 +7,15 @@ #ifndef _ASM_S390_UCONTEXT_H #define _ASM_S390_UCONTEXT_H -#define UC_EXTENDED 0x00000001 - -#ifndef __s390x__ +#define UC_GPRS_HIGH 1 /* uc_mcontext_ext has valid high gprs */ +#define UC_VXRS 2 /* uc_mcontext_ext has valid vector regs */ +/* + * The struct ucontext_extended describes how the registers are stored + * on a rt signal frame. Please note that the structure is not fixed, + * if new CPU registers are added to the user state the size of the + * struct ucontext_extended will increase. + */ struct ucontext_extended { unsigned long uc_flags; struct ucontext *uc_link; @@ -19,11 +24,9 @@ struct ucontext_extended { sigset_t uc_sigmask; /* Allow for uc_sigmask growth. Glibc uses a 1024-bit sigset_t. */ unsigned char __unused[128 - sizeof(sigset_t)]; - unsigned long uc_gprs_high[16]; + _sigregs_ext uc_mcontext_ext; }; -#endif - struct ucontext { unsigned long uc_flags; struct ucontext *uc_link; |