http://sourceware.org/bugzilla/show_bug.cgi?id=12485
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
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CC| |hjl.tools at gmail dot com
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2011-02-28 19:42:19
UTC ---
Here is a proposal for H/W S/W Attribute:
1. Minimum ISAs:
a. Only has EM_386 and EM_X86_64
i. IA32:
1) i386
2) i486
3) Pentium
4) Pentium Pro
5) MMX
6) SSE
7) AVX
ii. EM_X86_64:
1) SSE2
2) AVX
iii. Atom:
1) SSSE3
b. Executables/DSOs compiled for Atom, … won't run on all x86 platforms:
i. Loader can't tell from EM_386/EM_X86_64 to know what ISAs a program
requires.
2. GNU binutils supports build attribute and run-time platform compatibility
data
a. Build attribute:
i. Used by linker to set run-time platform compatibility data
b. Run-time platform compatibility data
i. Used by loader to check platform capabilities required by an
executable file/DSO.
c. Extend to x86:
i. H/W:
1) Required ISAs.
a) Define ISAs tags/attributes
ii. S/W:
1) Stack size
2) Additional libraries:
a) http://sourceware.org/bugzilla/show_bug.cgi?id=12485
iii. Extendable:
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