svn commit: r350270 - stable/12/sys/powerpc/powerpc

[Justin Hibbits]

Author: jhibbits
Date: Wed Jul 24 02:48:29 2019
New Revision: 350270
URL: https://svnweb.freebsd.org/changeset/base/350270

Log:
  MFC r349874
  
  powerpc: Clamp 32-bit binaries to 32-bit MAXUSER
  
  sv_maxuser specifies the maximum addressable space for user space.  Presently
  this is all 64-bits worth, which is impossible for a 32-bit process.
  
  This bug has existed since the initial import of powerpc64 in 2010.

Modified:
  stable/12/sys/powerpc/powerpc/elf32_machdep.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/powerpc/powerpc/elf32_machdep.c
==============================================================================
--- stable/12/sys/powerpc/powerpc/elf32_machdep.c	Wed Jul 24 02:37:39 2019	(r350269)
+++ stable/12/sys/powerpc/powerpc/elf32_machdep.c	Wed Jul 24 02:48:29 2019	(r350270)
@@ -98,7 +98,7 @@ struct sysentvec elf32_freebsd_sysvec = {
 	.sv_minuser	= VM_MIN_ADDRESS,
 	.sv_stackprot	= VM_PROT_ALL,
 #ifdef __powerpc64__
-	.sv_maxuser	= VM_MAXUSER_ADDRESS,
+	.sv_maxuser	= VM_MAXUSER_ADDRESS32,
 	.sv_usrstack	= FREEBSD32_USRSTACK,
 	.sv_psstrings	= FREEBSD32_PS_STRINGS,
 	.sv_copyout_strings = freebsd32_copyout_strings,