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2003-09-23  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/Versions [libc]
	(GLIBC_2.3.3): Add setcontext, getcontext, swapcontext, and
	makecontext.
	* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: Correct change
	for include Altivec support for PPC32.  It was not compatible.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ucontext_i.h: Adjust
	offsets for ucontext_t change.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S: Adjust
	for ucontext_t change.  Add compatibility code.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S: Likewise.
	Patch by Paul Mackerras <paulus@samba.org>.

2003-02-25  Randolph Chung  <tausq@debian.org>

	* sysdeps/hppa/Makefile: Include compat code in build.
	* sysdeps/hppa/libgcc-compat.c: New file.
	* sysdeps/hppa/Dist: Add libgcc-compat.c.
	* sysdeps/hppa/Versions [GLIBC_2.2]: Add __clz_tab.
This commit is contained in:
Ulrich Drepper
2003-09-24 03:22:56 +00:00
parent 16a76cd23c
commit 54ee14b388
17 changed files with 294 additions and 37 deletions
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36
sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
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@ -74,14 +74,40 @@ typedef struct ucontext
struct ucontext *uc_link;
stack_t uc_stack;
#if __WORDSIZE == 32
/* These fields are for backwards compatibility. */
/*
* These fields are set up this way to maximize source and
* binary compatibility with code written for the old
* ucontext_t definition, which didn't include space for the
* registers.
*
* Different versions of the kernel have stored the registers on
* signal delivery at different offsets from the ucontext struct.
* Programs should thus use the uc_mcontext.uc_regs pointer to
* find where the registers are actually stored. The registers
* will be stored within the ucontext_t struct but not necessarily
* at a fixed address. As a side-effect, this lets us achieve
* 16-byte alignment for the register storage space if the
* Altivec registers are to be saved, without requiring 16-byte
* alignment on the whole ucontext_t.
*
* The uc_mcontext.regs field is included for source compatibility
* with programs written against the older ucontext_t definition,
* and its name should therefore not change. The uc_pad field
* is for binary compatibility with programs compiled against the
* old ucontext_t; it ensures that uc_mcontext.regs and uc_sigmask
* are at the same offset as previously.
*/
int uc_pad[7];
mcontext_t *uc_regs;
unsigned int uc_oldsigmask[2];
int uc_pad2;
#endif
union uc_regs_ptr {
struct pt_regs *regs;
mcontext_t *uc_regs;
} uc_mcontext;
sigset_t uc_sigmask;
char uc_reg_space[sizeof(mcontext_t) + 12]; /* last for extensibility */
#else /* 64-bit */
sigset_t uc_sigmask;
mcontext_t uc_mcontext; /* last for extensibility */
#endif
} ucontext_t;
#endif /* sys/ucontext.h */