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Introduce a new arch_defs.h header that includes the corresponding
arch-specific arch_defs_.h file followed by generic arch_defs_.h file.
* linux/arch_defs.h: Rename to linux/arch_defs_.h.
* linux/aarch64/arch_defs.h: Rename to linux/aarch64/arch_defs_.h.
* linux/arm/arch_defs.h: Rename to linux/arm/arch_defs_.h.
* linux/i386/arch_defs.h: Rename to linux/i386/arch_defs_.h.
* linux/m68k/arch_defs.h: Rename to linux/m68k/arch_defs_.h.
* linux/s390/arch_defs.h: Rename to linux/s390/arch_defs_.h.
* linux/s390x/arch_defs.h: Rename to linux/s390x/arch_defs_.h.
* linux/x32/arch_defs.h: Rename to linux/x32/arch_defs_.h.
* linux/x86_64/arch_defs.h: Rename to linux/x86_64/arch_defs_.h.
* arch_defs.h: New file.
* Makefile.am (strace_SOURCES): Add it.
(EXTRA_DIST): Rename linux/*/arch_defs.h to linux/*/arch_defs_.h.
x32 is the only linux architecture where preadv2 and pwritev2 syscalls
take 5 arguments instead of 6.
* io.c (PREADV2_PWRITEV2_FLAGS_ARG_NO): New macro.
(SYS_FUNC(preadv2), SYS_FUNC(pwritev2)): Use it.
* linux/x32/syscallent.h (preadv2, pwritev2): Change nargs to 5.
* NEWS: Mention this fix.
* tests/preadv2-pwritev2.c (main): Fix invocation of preadv2
and pwritev2 syscalls on x32.
x32 syscalls starting with number 512 are compat syscalls that operate
on compat types. Set COMPAT_SYSCALL_TYPES flag to these syscall entries
and make get_syscall_args truncate arguments of syscalls that have this
flag set, to avoid unpleasant alternative of adding multiple
widen_to_ulong invocations to individual syscall parsers.
preadv, pwritev, preadv2, and pwritev2 are exceptions: while these
syscalls operate on compat types, the offset argument has a regular
64-bit type, so the automatic argument truncation cannot be applied.
* defs.h (COMPAT_SYSCALL_TYPES): New macro.
* syscall.c (CST): New macro, defined to COMPAT_SYSCALL_TYPES.
* linux/ia64/syscallent.h: Do not include "../i386/syscallent.h"
unless [CST > 0].
* linux/x32/syscallent.h [512..533, 536..545]: Add CST flag.
* linux/x86_64/get_syscall_args.c (get_syscall_args): Truncate arguments
of compat syscalls to 32-bit values.
* tests/ksysent.c (CST): New macro, defined to 0.
* tests/nsyscalls.c (CST): Likewise.
Why gcc didn't complain about it? It is definitely an index clash.
* linux/x32/syscallent.h: Change initializer indices for empty records from
[327 ... 511] to [329 ... 511].
fadvise_64_64 decoder used before this change prints different sign
of the "len" argument (loff_t vs size_t).
* linux/x32/syscallent.h (fadvise64): Replace SEN(fadvise64_64)
with SEN(fadvise64).
As io_setup syscall allocates some memory using do_mmap_pgoff, and
io_destroy deallocates this memory using vm_munmap, set TRACE_MEMORY
flag for all sysentries of io_setup and io_destroy using the following
oneliner:
sed -ri '/io_setup|io_destroy/ s/0,/TM,/' linux/*/syscallent*.h
* linux/*/syscallent*.h (io_setup, io_destroy): Change sys_flags to TM.
For the reason described in commit v4.10-517-gcfde1e3, a correct
definition of struct stat for x32 personality is necessary to enable
"asm_stat.h" with -mx32 on x86_64.
* linux/x32/asm_stat.h: Rename to ...
* linux/x86_64/asm_stat.h: ... new file.
* Makefile.am (strace_SOURCES): Add it.
* linux/x32/asm_stat.h: New file, include "x86_64/asm_stat.h".
* linux/s390x/arch_regs.c (ARCH_PC_REG): Remove, it is already defined
in just included linux/s390/arch_regs.c.
* linux/x32/arch_regs.c (ARCH_PC_REG): Remove, it is already defined
in just included linux/x86_64/arch_regs.c.
