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warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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See GCC PR47577; TODO: Remove them.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Natanael Copa <natanael.copa@gmail.com>
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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so far
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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constraints
Example: time() doesn't push/pop two registers now, and is smaller:
<__GI_time>:
-57 push %edi
-8b 7c 24 08 mov 0x8(%esp),%edi
-53 push %ebx
-89 fb mov %edi,%ebx
+8b 4c 24 04 mov 0x4(%esp),%ecx
+87 cb xchg %ecx,%ebx
b8 0d 00 00 00 mov $0xd,%eax
cd 80 int $0x80
-5b pop %ebx
-5f pop %edi
+87 cb xchg %ecx,%ebx
c3 ret
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The common define has the same behavior, just formatted differently.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Declare common NCS (non-constant syscall) variants and convert the existing
ports over to this.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Unify all the common syscall defines in syscalls-common.h and scrub all
the duplicated code from relevant ports. This should also make converting
existing ports to INLINE_SYSCALL() much easier as they don't have to get
lost in all the unrelated noise, as well as creating new ports.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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On an i386 platform with no rt_sigsuspend syscall (ie: Linux 2.0), compilation will halt on libc/sysdeps/linux/common/sigsuspend.os with a cryptic error message:
"Error: non-constant expression in ".if" statement"
I've investigated and found that the cause is that a literal '0' is being passed into a block of complex assembler macrology that is only prepared to deal with register names - '%eax', etc.
In turn, that seems to be because of a typo in the GCC register constraints. The constraints for 2 and 3-argument syscalls includes a "C" constraint. To gcc, "C" means an SSE floating point constant -- an unlikely element in a syscall. I suspect the author meant to type "S" (%esi).
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with gcc 4.2. Renaming to make it a bit uncommon name.
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Import INTERNAL_SYSCALL macro for i386 from glibc.
Use above macro in posix_fadvise implementation if an arch defines it.
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applications stop using _syscall#() and use syscall() instead. Cleanup
internal handling of syscall includes to use the correct header file.
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Prepare to kill the UNIFIED_SYSCALL option and instead have it be
a per arch thing that is either enabled or not for that arch.
-Erik
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NOTE!!! This is run by "make -C libc/sysdeps/linux/$(TARGET_ARCH) headers"
in the main Makefile, but I only changed libc/sysdeps/linux/i386/Makefile
as I had no way of testing it for the other archs. Various arch maintainers,
please check and update the corresponding Makefile... or report bugs ;-)...
appropriately. You'll also want to "cvs del" syscall.h and add it to
a .cvsignore in $(ARCH)/bits.
Also added a define to uClibc_config.h, __UCLIBC_USE_UNIFIED_SYSCALL__, and
moved i386 unified syscall stuff out of common and into i386/bits/syscalls.h.
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This will break the build for a bit.
-Erik
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all arches till they add in an libc/sysdeps/linux/<arch>/bits/syscalls.h
file. Sorry about there, there was no other way...
-Erik
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