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Bug #2413

closed

%ymm* need to be preserved on way through PLT

Added by Rich Lowe over 9 years ago. Updated over 9 years ago.

Status:
Resolved
Priority:
Normal
Category:
lib - userland libraries
Start date:
2012-03-16
Due date:
% Done:

100%

Estimated time:
Difficulty:
Hard
Tags:
Gerrit CR:

Description

On systems supporting AVX, we need to preserve the %ymm registers in elf_rtbndr as we currently do with %xmm, to prevent anything called as part of the journey through the PLT corrupting the upper 128 bits of any arguments passed in those registers.


Related issues

Related to illumos gate - Feature #533: RFE: Need support for Intel x86 "Advanced Vector Extensions" (="AVX") instructionsNew2010-12-16

Actions
Actions #1

Updated by Robert Mustacchi over 9 years ago

  • Assignee set to Robert Mustacchi
  • % Done changed from 0 to 70
Actions #2

Updated by Albert Lee over 9 years ago

  • Status changed from New to Resolved
  • % Done changed from 70 to 100
  • Tags deleted (needs-triage)

Fixed in:
changeset: 13675:a9ae30c28ee4
tag: tip
user: Robert Mustacchi <>
date: Wed Apr 25 00:27:21 2012 -0400
files: usr/src/cmd/sgs/include/rtld.h usr/src/cmd/sgs/rtld/amd64/boot_elf.s usr/src/cmd/sgs/rtld/common/globals.c usr/src/uts/i86pc/os/cpuid.c
description:
2413 %ymm* need to be preserved on way through PLT
Reviewed by: Richard Lowe <>
Reviewed by: Joshua M. Clulow <>
Reviewed by: Hans Rosenfeld <>
Approved by: Albert Lee <>

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