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c739e191d0
The uc_mcontext.__reserved member of ucontext_t is a user visible API,
that should not be changed, because this is the only way to access cpu
states of various extensions of linux asm/sigcontext.h, it does not
violate namespace rules either, so revert this part of the commit
commit 4fa9b3bfe6
Commit: Joseph Myers <joseph@codesourcery.com>
Fix mcontext_t sigcontext namespace (bug 21457).
(In principle the user can type cast &uc_mcontext to struct sigcontext*
to use the linux sigcontext fields, but that's not the existing practice
since mcontext_t used to be a typedef of struct sigcontext.)
[BZ #22742]
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h (__glibc_reserved1):
Rename to __reserved and add comment.
* sysdeps/unix/sysv/linux/aarch64/ucontext_i.sym (__glibc_reserved1):
Rename to __reserved.
56 lines
1.6 KiB
Plaintext
56 lines
1.6 KiB
Plaintext
#include <inttypes.h>
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#include <signal.h>
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#include <stddef.h>
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#include <sys/ucontext.h>
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#include <asm/sigcontext.h>
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#include "kernel_rt_sigframe.h"
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SIG_BLOCK
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SIG_SETMASK
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_NSIG8 (_NSIG / 8)
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-- Offsets of the fields in the kernel rt_sigframe_t structure.
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#define rt_sigframe(member) offsetof (struct kernel_rt_sigframe, member)
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RT_SIGFRAME_UCONTEXT rt_sigframe (uc)
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RT_SIGFRAME_SIZE sizeof (struct kernel_rt_sigframe)
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FPSIMD_CONTEXT_SIZE sizeof (struct fpsimd_context)
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#define ucontext(member) offsetof (ucontext_t, member)
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#define stack(member) ucontext (uc_stack.member)
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#define mcontext(member) ucontext (uc_mcontext.member)
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UCONTEXT_FLAGS ucontext (uc_flags)
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UCONTEXT_LINK ucontext (uc_link)
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UCONTEXT_STACK ucontext (uc_stack)
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UCONTEXT_MCONTEXT ucontext (uc_mcontext)
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UCONTEXT_SIGMASK ucontext (uc_sigmask)
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UCONTEXT_SIZE sizeof (ucontext_t)
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STACK_SP stack (ss_sp)
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STACK_SIZE stack (ss_size)
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STACK_FLAGS stack (ss_flags)
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oX0 mcontext (regs)
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oSP mcontext (sp)
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oPC mcontext (pc)
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oPSTATE mcontext (pstate)
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oEXTENSION mcontext (__reserved)
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#define fpsimd_context(member) offsetof (struct fpsimd_context, member)
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oHEAD fpsimd_context (head)
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oV0 fpsimd_context (vregs)
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oFPSR fpsimd_context (fpsr)
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oFPCR fpsimd_context (fpcr)
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#define aarch64_ctx(member) offsetof (struct _aarch64_ctx, member)
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oMAGIC aarch64_ctx (magic)
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oSIZE aarch64_ctx (size)
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FPSIMD_MAGIC
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