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(svn r3673) -Codechange: [OSX] changed the makefile to autodetect if it compiles on G5 and then adds flags to optimise for G5

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This will not interfere with crosscompiling or universal binaries
This commit is contained in:
bjarni 2006-02-25 18:11:11 +00:00
parent fb301cced7
commit 8e7c2555fe
3 changed files with 42 additions and 0 deletions
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3
Makefile
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@ -345,6 +345,9 @@ endif
ifdef OSX
# these compilerflags makes the app run as fast as possible without making the app unstable. It works on G3 or newer
BASECFLAGS += -O3 -funroll-loops -fsched-interblock -falign-loops=16 -falign-jumps=16 -falign-functions=16 -falign-jumps-max-skip=15 -falign-loops-max-skip=15 -mdynamic-no-pic
ifdef IS_G5
BASECFLAGS += -mtune=970 -mcpu=970 -mpowerpc-gpopt
endif
else
ifdef MORPHOS
BASECFLAGS += -I/gg/os-include -O2 -noixemul -fstrict-aliasing -fexpensive-optimizations

29
os/macosx/G5_detector.c Normal file
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@ -0,0 +1,29 @@
/* $Id:$ */
#include <mach/mach.h>
#include <mach/mach_host.h>
#include <mach/host_info.h>
#include <mach/machine.h>
#include <stdio.h>
#ifndef CPU_SUBTYPE_POWERPC_970
#define CPU_SUBTYPE_POWERPC_970 ((cpu_subtype_t) 100)
#endif
// this function is a lightly modified version of some code from Apple's developer homepage to detect G5 CPUs at runtime
main()
{
host_basic_info_data_t hostInfo;
mach_msg_type_number_t infoCount;
boolean_t is_G5;
infoCount = HOST_BASIC_INFO_COUNT;
host_info(mach_host_self(), HOST_BASIC_INFO,
(host_info_t)&hostInfo, &infoCount);
is_G5 = ((hostInfo.cpu_type == CPU_TYPE_POWERPC) &&
(hostInfo.cpu_subtype == CPU_SUBTYPE_POWERPC_970));
if (is_G5)
printf("1");
}

10
os/macosx/Makefile.setup
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@ -16,6 +16,16 @@ $(warning Compiling a release build, that is not a universal binary)
endif
endif
ifndef FAT_BINARY
ifndef JAGUAR
ifeq ($(shell uname), Darwin)
# it's a hardware mac, not crosscompiling
$(Q)$(CC_HOST) os/macosx/G5_detector.c -o os/macosx/G5_detector
IS_G5:=$(shell os/macosx/G5_detector)
endif
endif
endif
ifdef FAT_BINARY
ifndef STATIC
$(warning Compiling a universal binary, that is not static. Adding static flag)