On 03/31/2010 03:13 PM, Мартин Бохниг wrote:
To avoid ambiguity: The problem is, that as far as I know the
platform-specific versions of libc are still closed src binary-only
releases. Otherwise we could of course just look at ON how they
implemented the platform-specific libc-versions.
I guess you don't exactly need source code to find out which function
uses which instruction - it's right there in the library; after all,
processor-specific functions are written in assembler anyway
(http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc_psr/sun4u-opl/common/memcpy.s
is an example)
$ nm /platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1 | grep memcpy
[27] | 1032| 1596|FUNC |GLOB |0 |8 |_memcpy
...
$ dis -F memcpy /platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1
disassembly for /platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1
memcpy()
memcpy: 8a 10 00 08 mov %o0, %g5
memcpy+0x4: 80 a2 a0 11 cmp %o2, 0x11
memcpy+0x8: 08 48 00 68 bleu,pt %icc, +0x1a0
<memcpy+0x1a8>
...
$ nm /platform/SUNW,Sun-Fire-T200/lib/libc_psr.so.1 | grep str
<nothing>
(so no string functions are T200-specific, I'm guessing)
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