robin.thoni/ipxe - git rthoni.com

Michael Brown 1df3b53051 [build] Prevent use of MMX and SSE registers The existence of MMX and SSE is required by the System V x86_64 ABI and so is assumed by gcc, but these registers are not preserved by our own interrupt handlers and are unlikely to be preserved by other context switch handlers in a boot firmware environment. Explicitly prevent gcc from using MMX or SSE registers to avoid potential problems due to silent register corruption. We must remove the %xmm0-%xmm5 clobbers from the x86_64 version of hv_call() since otherwise gcc will complain about unknown register names. Theoretically, we should probably add code to explicitly preserve the %xmm0-%xmm5 registers across a hypercall, in order to guarantee to external code that these registers remain unchanged. In practice this is difficult since SSE registers are disabled by default: for background information see commits 71560d1 ("[librm] Preserve FPU, MMX and SSE state across calls to virt_call()") and dd9a14d ("[librm] Conditionalize the workaround for the Tivoli VMM's SSE garbling"). Signed-off-by: Michael Brown <mcb30@ipxe.org>		6 년 전
contrib	[coverity] Add Coverity user model	7 년 전
src	[build] Prevent use of MMX and SSE registers	6 년 전
.travis.yml	[travis] Integrate with Coverity Scan	7 년 전
COPYING	[legal] Update GPLv2 licence text	10 년 전
COPYING.GPLv2	[legal] Update GPLv2 licence text	10 년 전
COPYING.UBDL	[legal] Add support for the Unmodified Binary Distribution Licence	10 년 전
README	[doc] Re-add README file	14 년 전

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org