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* add PIE support for ARMRich Felker2013-07-101-0/+30
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* align stack properly for calling global ctors/dtors on x86[_64]Rich Felker2013-06-034-0/+8
| | | | | | failure to do so was causing crashes on x86_64 when ctors used SSE, which was first observed when ctors called variadic functions due to the SSE prologue code inserted into every variadic function.
* fix regression that made shared libs crash on armRich Felker2013-02-032-0/+4
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* add support for ctors/dtors on arm with modern gccRich Felker2012-12-072-4/+40
| | | | | | | | | | | a while back, gcc switched from using the old _init/_fini fragments method for calling ctors and dtors on arm to the __init_array and __fini_array method. unfortunately, on glibc this depends on ugly hacks involving making libc.so a linker script and pulling parts of libc into the main program binary. so I cheat a little bit, and just write asm to iterate over the init/fini arrays from the _init/_fini asm. the same approach could be used on any arch it's needed on, but for now arm is the only one.
* add missing startfiles for powerpcRich Felker2012-11-232-0/+28
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* PPC port cleaned up, static linking works well now.rofl0r2012-11-132-27/+26
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* import preliminary ppc work by rdp.Richard Pennington2012-11-131-0/+27
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* microblaze portRich Felker2012-09-293-0/+38
| | | | | | based on initial work by rdp, with heavy modifications. some features including threads are untested because qemu app-level emulation seems to be broken and I do not have a proper system image for testing.
* crt1 must align stack pointer on mipsRich Felker2012-08-171-0/+1
| | | | | | it's naturally aligned when entered with the kernel argv array, but if ld.so has been invoked explicitly to run a program, the stack will not be aligned due to having thrown away argv[0].
* align mips _init/_fini functionsRich Felker2012-08-051-0/+2
| | | | | | since .init and .fini are not .text, the toolchain does not seem to align them for code by default. this yields random breakage depending on the object sizes the linker is dealing with.
* initial version of mips (o32) port, based on work by Richard Pennington (rdp)Rich Felker2012-07-113-0/+53
| | | | | | | | | | | | | basically, this version of the code was obtained by starting with rdp's work from his ellcc source tree, adapting it to musl's build system and coding style, auditing the bits headers for discrepencies with kernel definitions or glibc/LSB ABI or large file issues, fixing up incompatibility with the old binutils from aboriginal linux, and adding some new special cases to deal with the oddities of sigaction and pipe syscall interfaces on mips. at present, minimal test programs work, but some interfaces are broken or missing. threaded programs probably will not link.
* fix arm crti/crtn codeRich Felker2012-06-252-0/+4
| | | | | | | lr must be saved because init/fini-section code from the compiler clobbers it. this was not a problem when i tested without gcc's crtbegin/crtend files present, but with them, musl on arm fails to work (infinite loop in _init).
* remove some junk from x86_64 start filesRich Felker2012-05-022-4/+0
| | | | | | | | | looks like nik copied these "extra arguments" from the i386 code. they're not actually arguments there, just 1-byte instructions to make sure the stack is aligned to 16 bytes after all the other arguments are pushed. since each push is 8 bytes on x86_64, they happened to have no effect here, but their presence is confusing and a minor waste of space.
* PIE support for x86_64 (untested)Rich Felker2012-05-021-0/+18
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* consistency cleanup: removed redundant size suffixed from i386 asmRich Felker2012-05-022-22/+22
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* PIE support for i386Rich Felker2012-05-022-0/+24
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* remove attempts to be pie-compatible from i386 crt1.sRich Felker2012-05-021-6/+3
| | | | | | | | | | it does not work; after further consideration, a separate Scrt1.s for pie really is essential. it would be nice if the unified approach worked, but the linker fails to generate the correct PLT entries and instead puts textrels in the main program, which don't work because the kernel maps the text read-only. new Scrt1.s will be committed soon in place of this.
* add support for init/finit (constructors and destructors)Rich Felker2012-02-069-7/+56
| | | | | | | | | | this is mainly in hopes of supporting c++ (not yet possible for other reasons) but will also help applications/libraries which use (and more often, abuse) the gcc __attribute__((__constructor__)) feature in "C" code. x86_64 and arm versions of the new startup asm are untested and may have minor problems.
* initial commit of the arm portRich Felker2011-09-181-0/+13
| | | | | | | | | | | | | this port assumes eabi calling conventions, eabi linux syscall convention, and presence of the kernel helpers at 0xffff0f?0 needed for threads support. otherwise it makes very few assumptions, and the code should work even on armv4 without thumb support, as well as on systems with thumb interworking. the bits headers declare this a little endian system, but as far as i can tell the code should work equally well on big endian. some small details are probably broken; so far, testing has been limited to qemu/aboriginal linux.
* cleanup comment cruft in startup codeRich Felker2011-02-211-1/+0
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* make startup code PIE-compatibleRich Felker2011-02-211-2/+4
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* shave off 2 bytes from crt1.o _startRich Felker2011-02-201-2/+2
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* Port musl to x86-64. One giant commit!Nicholas J. Kain2011-02-151-0/+16
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* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-124-0/+17