Have the profiler load the correct registers on x64.

Have the profiler load the correct registers on x64.

This is still not correct, since internally they are kept as an int.
Use our new V8_HOST_ARCH macros for detecting the host processor.

[Lasse Reichstein, 2009-05-06 11:05:27]

LGTM

http://codereview.chromium.org/109025/diff/1/2
File src/platform-linux.cc (right):

http://codereview.chromium.org/109025/diff/1/2#newcode608
Line 608: sample.pc = mcontext.gregs[REG_RIP];
Does the assignment compile, and throw away the upper half of the value
silently? If so, I'd prefer an UNIMPLEMENTED() in front of it with a comment
saying to not remove it unitl sample.pc allows 64 bits.

[Dean McNamee, 2009-05-06 11:07:15]

http://codereview.chromium.org/109025/diff/1/2
File src/platform-linux.cc (right):

http://codereview.chromium.org/109025/diff/1/2#newcode608
Line 608: sample.pc = mcontext.gregs[REG_RIP];
It does compile, but I'll just do UNIMPLEMENTED :\

On 2009/05/06 11:05:27, Lasse Reichstein wrote:
> Does the assignment compile, and throw away the upper half of the value
> silently? If so, I'd prefer an UNIMPLEMENTED() in front of it with a comment
> saying to not remove it unitl sample.pc allows 64 bits.