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Handle _dl_skip_args in the asm part of the dynamic linker startup,
to skip the ldso arguments, so we can keep this symbol hidden as other archs do.
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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There's no need to export this symbol, so mark them all hidden.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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They expand into the same code, but using the ELF_xxx()/ElfW() macros
makes it much easier to spot similarities between code bases.
Acked-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Acked-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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ldso/ldso/avr32/dl-startup.h: remove superfluous definition of START() macro.
ldso/ldso/*/dl-startup.h: fix a typo in comment
text data bss dec hex filename
- 16752 244 92 17088 42c0 lib/ld-uClibc.so
+ 16709 240 92 17041 4291 lib/ld-uClibc.so
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Pass via r4 the rtld finalizer
_dl_fini to the user application. This will be the 6^ arg of
__uClibc_main and will be registered with 'atexit'.
In this way the dynamic linker will be able to call destructors
defined within the loaded DSOs.
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Add missing 7th arg "stack_end".
add comment of undocumented usage of r4.
fix comment of expected __uClibc_main() prototype.
Signed-off-by: Yoshii Takashi <yoshii.takashi@renesas.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
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I experiencied some problems while trying to debug the ld.so (sh4)
in debug mode. I found that the _start code was not placed into any
PT_LOAD segment causing a SIGSEV.
I solved this issue explicitely placing the _start code into
the .text section (see attached patch).
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the default
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This makes sh and sh64 get more in line with what the other
architectures are doing. Also fixes up some build failures.
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where possible. This will also make ldso smaller.
However the patch touches all archs and I have only tested PPC and x86.
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execution of ldso.
Added new asm for MIPS to be tested.
All arches should retest.
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I finally tracked down the problem with SH4 shared library loading -
in file ldso/ldso/sh/dl-startup.h, the line
#define DL_BOOT(X) static void __attribute_used__ _dl_boot2 (X)
should be
#define DL_BOOT(X) static void* __attribute_used__ _dl_boot2 (X)
otherwise the application code will never be called and _dl_boot will
just return causing a segmentation fault.
Carl
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Begin converting some big ugly macros to inline functions
instead
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to be arch specific to work properly.
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to make it easier to treat it specially while not bothering the
rest of the code with the same constraints.
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"depreciated multi-line string literals" warnings
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how uClibc handles _init and _fini, allowing shared lib constructors and
destructors to initialize things in the correct sequence. Stefan ported the SH
architecture. I then ported x86, arm, and mips. x86 and arm are working fine,
but I don't think I quite got things correct for mips.
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shared library support. This also adds some cleaner error
handling, which I (Erik) then ported over to x86 and arm.
In addition Stefan added the following fixes:
- in hash.c was the lvalue handling of global library functions wrong.
To fix this I had to change the prototype of _dl_find_hash. (==> TIS and
ELF spec. Vers. 1.2)
- in ldso.c was the order of the .init sections calls wrong. Before we call
the initialization code of a library we have to check that all dependend
libraries are already initialized. This can easily made by calling it in the
revers loading order. For this I added a previous pointer chain.
- in ldso.c the ELF magics wasn't checked fo PPC, MIPS and SH architecture
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