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This patch changes all cases where the ARM assembler mov pc,rx
instructions are used to ensure that the thumb/arm interwork change of
process more works - in essence mov pc,rx needs to become bx rc.
The ldr pc or ldm rx, {pc} instructions are not changed - this is
fine on ARM >=v5 but will fail to restore thumb mode on ARM v4T,
i.e. this code will not provide support for thumb on ARM v4T.
One mov pc is left in resolve.S, this is fixed in a different patch -
thumb-resolve.patch
The changes are protected by __THUMB_INTERWORK__ - the original
mov instruction will work on newer architectures and is required on
arch v4 (not v4t) and earlier - those which did not support thumb -
so this is safe. See gcc lib1asmfuncs for a more exact test.
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the default
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execution of ldso.
Added new asm for MIPS to be tested.
All arches should retest.
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Begin converting some big ugly macros to inline functions
instead
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hacks. Just check for the elf magic string one byte at a time....
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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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-Erik
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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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-Erik
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