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Make SH ucontext always match current kernels.
As discussed in the thread starting at <https://sourceware.org/ml/libc-alpha/2015-06/msg00657.html>, there are various problems with the sigcontext / mcontext / ucontext structures on SH. The soft-float SH4 case in fact does not build at present, with errors processing sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.sym with gen-as-const.awk ("error: 'mcontext_t {aka struct <anonymous>}' has no member named 'fpregs'"). Linux 4.8 (commit bbe6c77857c38f4acbdc4fc70399515226d1859a) moved to always using the same sigcontext structure on SH, with room for floating-point registers whether or not present on the processor. This patch makes the glibc header match. Tested (compilation only) for sh4-linux-gnu hard float, and in conjunction with other fixes for soft float. * sysdeps/unix/sysv/linux/sh/sys/ucontext.h [__SH4__ || __SH4A__]: Make code unconditional. [!(__SH4__ || __SH4A__)]: Remove conditional code.
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@ -1,3 +1,9 @@
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2016-11-15 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/unix/sysv/linux/sh/sys/ucontext.h [__SH4__ || __SH4A__]:
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Make code unconditional.
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[!(__SH4__ || __SH4A__)]: Remove conditional code.
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2016-11-15 Rical Jasan <ricaljasan@pacific.net>
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* manual/sysinfo.texi (S_APPEND): Delete.
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@ -76,7 +76,6 @@ enum
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};
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#endif
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#if (defined(__SH4__) || defined(__SH4A__))
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typedef int freg_t;
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/* Number of FPU registers. */
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@ -102,20 +101,6 @@ typedef struct
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unsigned int fpul;
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unsigned int ownedfp;
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} mcontext_t;
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#else
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/* Context to describe whole processor state. */
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typedef struct
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{
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unsigned int oldmask;
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gregset_t gregs;
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unsigned int pc;
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unsigned int pr;
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unsigned int sr;
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unsigned int gbr;
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unsigned int mach;
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unsigned int macl;
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} mcontext_t;
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#endif /* __SH_FPU_ANY__ */
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/* Userlevel context. */
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typedef struct ucontext
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