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Relocate MacOS X executable to 0x78048000 akin to linker scripts on Linux

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arches. This probably already worked in the past but I have just verified
that Basilisk II works with up to 1 GB of Mac RAM in DIRECT_ADDRESSING or
REAL_ADDRESSING mode.

BTW, a quick Speedometer 4 CPU performance test showed a +15% speed increase
in real addressing mode vs. direct addressing. x86 arches don't benefit much
from that mode since they support complex address modes already (beyond plain
load/store).

TODO: check on MacOS X for Intel so that to reduce the test to darwin*:*)
This commit is contained in:
gbeauche 2006-03-14 21:18:44 +00:00
parent fa84cf9a51
commit 7ee9cb43dc
1 changed files with 1 additions and 0 deletions
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BasiliskII/src/Unix/configure.ac
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@ -1100,6 +1100,7 @@ dnl Check for linker script support
case $target_os:$target_cpu in
linux*:i?86) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-i386.ld";;
linux*:x86_64) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-x86_64.ld";;
darwin*:powerpc)LINKER_SCRIPT_FLAGS="-Wl,-seg1addr,0x78048000";;
esac
if [[ -n "$LINKER_SCRIPT_FLAGS" ]]; then
AC_CACHE_CHECK([whether linker script is usable],