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Enable real addressing by disabling PIE

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This commit is contained in:
Dave Vasilevsky 2015-07-05 09:19:12 -04:00
parent a89bb77bde
commit 4b5f3bd87b
2 changed files with 17 additions and 0 deletions
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5
BasiliskII/src/Unix/Darwin/lowmem.c
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@ -72,6 +72,11 @@ void pagezero_32(struct mach_header *machhead)
/* change the permissions */
sc_cmd->maxprot = target_uint32(VM_PROT_ALL);
sc_cmd->initprot = target_uint32(VM_PROT_ALL);
#ifdef MH_PIE
/* disable pie in header */
machhead->flags = target_uint32(target_uint32(machhead->flags) & ~MH_PIE);
#endif
}
#if defined(MH_MAGIC_64)

12
SheepShaver/src/Unix/configure.ac
View File

@ -936,6 +936,18 @@ AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_mmap_vm,
fi dnl HAVE_MMAP_VM
dnl Check if we can disable position-independent code
AC_CACHE_CHECK([how to disable position-independent code],
ac_cv_no_pie, [
ac_cv_no_pie='-Wl,-no_pie'
saved_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $ac_cv_no_pie"
AC_TRY_LINK(,,,[ac_cv_no_pie="cannot"])
if [[ "$ac_cv_no_pie" = "cannot" ]]; then
LDFLAGS="$saved_LDFLAGS"
fi
])
dnl Check if we can modify the __PAGEZERO segment for use as Low Memory
AC_CACHE_CHECK([whether __PAGEZERO can be Low Memory area 0x0000-0x3000],
ac_cv_pagezero_hack, [