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Add strlcpy() function and implementation, and use configure to detect
if strlcpy() is natively available on the system.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Change the "noreturn" macro to "no_return", to avoid problems with
system header files which use __attribute__((noreturn)) rather than
__attribute__((__noreturn__)) as is appropriate for system headers.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Add a new macro for a non-returning function.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Add copyright headers to the *.c/*.h files in the main directory. For
files where I'm sure enough that we have all the approvals, I have
given them the 2-BSD license, the others have been given the "LGPL for
now" license header. Most of them can probably be changed after
auditing.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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OpenWatcom 1.8 has a C99 mode, which implements _Bool and
<stdbool.h>. Unfortunately the implementation is broken, and doesn't
let _Bool be implicitly converted to integer (as required by the C99
spec). Detect this case in autoconf.
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offsetof() is a C99 construct; provided here as an ersatz for older
systems.
container_of() is a nonstandard but highly useful construct, which
allows data structure control items like tree structures to be
embedded in larger data structures without the penalty of extra
pointers and allocations.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Put the appropriate machinery in place to be able to use the "inline"
and "restrict" keywords with appropriate semantics.
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Introduce the likely() and unlikely() macros, as used in Linux.
They are compiler-dependent hints that a particular boolean expression
is likely to be true or false, respectively.
Currently only implemented for gcc.
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Use autoconf to detect littleendian word order, and use
WORDS_LITTLEENDIAN instead of X86_MEMORY when we don't require
unaligned memory accesses to be permitted.
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OpenWatcom, and possibly other compilers from the DOS universe,
defines __386__ rather than __i386__.
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Address data is always int64_t even if the size itself is smaller;
this was broken on bigendian hosts (still need testing!)
Create simple "write sized object" macros.
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Some platforms apparently feel -std=c99, which defines
__STRICT_ANSI__, should also hide a bunch of function prototypes.
This rather sucks. At least try to deal with it.
MinGW and DJGPP both have this problem, in particular.
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If MinGW is detected, undefine __STRICT_ANSI__ in compiler.h instead.
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NASM currently doesn't compile with a C++ compiler, but the error
messages are sometimes useful. Define macros necessary for
<inttypes.h> to work with a C++ compiler.
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Both C and C++ have "bool", "true" and "false" in lower case; C
requires <stdbool.h> for this, in C++ it is an inherent type built
into the compiler. Use those instead of the old macros; emulate with
a simple typedef enum if unavailable.
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Concentrate compiler dependencies to compiler.h; make sure compiler.h
is included first in every .c file (since some prototypes may depend
on the presence of feature request macros.)
Actually use the conditional inclusion of various functions (totally
broken in previous releases.)
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To deal with fools^Wpeople trying to keep really old systems alive,
create a proper framework for substitution functions, and make it
possible to deal with the lack of snprintf/vsnprintf in particular.
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Some versions of MSVC have snprintf() and vsnprintf() only with a
leading underscore. Handle that a bit more cleanly.
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Apparently configure was generating config.h, and nothing ever actually
included it. Include it in nasm.h as well as compiler.h, and in
rdoff/rdlar.h which uses these macros.
There appears to be no use of HAVE_* macros in any file that doesn't
have nasm.h included; in fact, so far the only use has been in
rdoff/rdlar.h.
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Move anything compiler-specific to "compiler.h".
There was an unguarded use of __attribute__(()) in outmacho.c; also
require gcc 4+ for __builtin_ctlz(). Speed up the open-coded version, too.
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