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Fix REAL_ADDRESSING mode on MacOS X, aka move Mach defines to config_macosx.h

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and fix lowmem (BLESS) to handle other-endian binaries.
This commit is contained in:
gbeauche 2007-06-15 22:54:24 +00:00
parent 41df47a596
commit e9c5625ada
4 changed files with 43 additions and 280 deletions
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10
BasiliskII/src/MacOSX/Makefile.in
View File

@ -14,7 +14,6 @@ DEFS = @DEFS@ @DEFINES@ -D_REENTRANT -DAQUA -DFPU_IEEE
LDFLAGS = @LDFLAGS@
LIBS = @LIBS@
MONSRCS = @MONSRCS@
BLESS = @BLESS@
LN_S = ln -s
## Compilers selection (XXX hackery for 10.2 cross-compilation...)
@ -116,6 +115,8 @@ APP_APP = $(APP).app
TARGET_ARCHES = @TARGET_ARCHES@
PROGS = $(foreach arch, $(TARGET_ARCHES), $(APP).$(arch))
BLESS = $(OBJ_DIR)/lowmem
## Rules
.PHONY: modules install installdirs uninstall mostlyclean clean distclean depend dep
.SUFFIXES:
@ -159,7 +160,12 @@ $(foreach arch,$(TARGET_ARCHES),$(eval $(call PROGS_template,$(arch))))
links: $(UNIXSRCS)
$(OBJ_DIR)/$(APP): $(OBJ_DIR) $(GEN_DIR) $(OBJS)
$(BLESS): $(OBJ_DIR) $(OBJ_DIR)/lowmem.o
$(HOST_CC) -o $@ $(OBJ_DIR)/lowmem.o
$(OBJ_DIR)/lowmem.o: ../Unix/Darwin/lowmem.c
$(HOST_CC) -o $@ -c $<
$(OBJ_DIR)/$(APP): $(OBJ_DIR) $(GEN_DIR) $(OBJS) $(BLESS)
$(CXX) -o $@ $(LDFLAGS) $(OBJS) $(LIBS)
$(BLESS) $@

15
BasiliskII/src/MacOSX/config_macosx.h
View File

@ -60,3 +60,18 @@
does it the other way around. This macro should not be defined if the
ordering is the same as for multi-word integers. */
/* #undef HOST_FLOAT_WORDS_BIG_ENDIAN */
/* Define if your system supports Mach exceptions. */
#define HAVE_MACH_EXCEPTIONS 1
/* Define to 1 if you have the <mach/mach.h> header file. */
#define HAVE_MACH_MACH_H 1
/* Define to 1 if you have the `mach_task_self' function. */
#define HAVE_MACH_TASK_SELF 1
/* Define if your system has a working vm_allocate()-based memory allocator. */
#define HAVE_MACH_VM 1
/* Define if the __PAGEZERO Mach-O Low Memory Globals hack works. */
#define PAGEZERO_HACK 1

277
BasiliskII/src/MacOSX/configure.in
View File

@ -219,8 +219,6 @@ dnl Checks for library functions.
AC_CHECK_FUNCS(strdup strerror cfmakeraw)
AC_CHECK_FUNCS(clock_gettime timer_create)
AC_CHECK_FUNCS(sigaction signal)
AC_CHECK_FUNCS(mmap mprotect munmap)
AC_CHECK_FUNCS(vm_allocate vm_deallocate vm_protect)
AC_CHECK_FUNCS(poll inet_aton)
dnl Darwin seems to define mach_task_self() instead of task_self().
@ -410,188 +408,6 @@ AC_CACHE_CHECK([whether TUN/TAP is supported],
AC_TRANSLATE_DEFINE(ENABLE_TUNTAP, "$ac_cv_tun_tap_support",
[Define if your system supports TUN/TAP devices.])
dnl Various checks if the system supports vm_allocate() and the like functions.
have_mach_vm=no
if [[ "x$ac_cv_func_vm_allocate" = "xyes" -a "x$ac_cv_func_vm_deallocate" = "xyes" -a \
"x$ac_cv_func_vm_protect" = "xyes" ]]; then
have_mach_vm=yes
fi
AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
[Define if your system has a working vm_allocate()-based memory allocator.])
dnl Check that vm_allocate(), vm_protect() work
if [[ "x$have_mach_vm" = "xyes" ]]; then
AC_CACHE_CHECK([whether vm_protect works],
ac_cv_vm_protect_works, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
ac_cv_vm_protect_works=yes
dnl First the tests that should segfault
for test_def in NONE_READ NONE_WRITE READ_WRITE; do
AC_TRY_RUN([
#define CONFIGURE_TEST_VM_MAP
#define TEST_VM_PROT_$test_def
#include "../Unix/vm_alloc.cpp"
], ac_cv_vm_protect_works=no, rm -f core,
dnl When cross-compiling, do not assume anything
ac_cv_vm_protect_works="guessing no"
)
done
AC_TRY_RUN([
#define CONFIGURE_TEST_VM_MAP
#define TEST_VM_PROT_RDWR_WRITE
#include "../Unix/vm_alloc.cpp"
], , ac_cv_vm_protect_works=no,
dnl When cross-compiling, do not assume anything
ac_cv_vm_protect_works="guessing no"
)
AC_LANG_RESTORE
]
)
dnl Remove support for vm_allocate() if vm_protect() does not work
if [[ "x$have_mach_vm" = "xyes" ]]; then
case $ac_cv_vm_protect_works in
*yes) have_mach_vm=yes;;
*no) have_mach_vm=no;;
esac
fi
AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
[Define if your system has a working vm_allocate()-based memory allocator.])
fi dnl HAVE_MACH_VM
dnl Various checks if the system supports mmap() and the like functions.
dnl ... and Mach memory allocators are not supported
have_mmap_vm=no
if [[ "x$ac_cv_func_mmap" = "xyes" -a "x$ac_cv_func_munmap" = "xyes" -a \
"x$ac_cv_func_mprotect" = "xyes" ]]; then
if [[ "x$have_mach_vm" = "xno" ]]; then
have_mmap_vm=yes
fi
fi
AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, "$have_mmap_vm",
[Define if your system has a working mmap()-based memory allocator.])
dnl Check that mmap() and associated functions work.
if [[ "x$have_mmap_vm" = "xyes" ]]; then
dnl Check if we have a working anonymous mmap()
AC_CACHE_CHECK([whether mmap supports MAP_ANON],
ac_cv_mmap_anon, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_RUN([
#define HAVE_MMAP_ANON
#define CONFIGURE_TEST_VM_MAP
#define TEST_VM_MMAP_ANON
#include "../Unix/vm_alloc.cpp"
], ac_cv_mmap_anon=yes, ac_cv_mmap_anon=no,
dnl When cross-compiling, do not assume anything.
ac_cv_mmap_anon="guessing no"
)
AC_LANG_RESTORE
]
)
AC_TRANSLATE_DEFINE(HAVE_MMAP_ANON, "$ac_cv_mmap_anon",
[Define if <sys/mman.h> defines MAP_ANON and mmap()'ing with MAP_ANON works.])
AC_CACHE_CHECK([whether mmap supports MAP_ANONYMOUS],
ac_cv_mmap_anonymous, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_RUN([
#define HAVE_MMAP_ANONYMOUS
#define CONFIGURE_TEST_VM_MAP
#define TEST_VM_MMAP_ANON
#include "../Unix/vm_alloc.cpp"
], ac_cv_mmap_anonymous=yes, ac_cv_mmap_anonymous=no,
dnl When cross-compiling, do not assume anything.
ac_cv_mmap_anonymous="guessing no"
)
AC_LANG_RESTORE
]
)
AC_TRANSLATE_DEFINE(HAVE_MMAP_ANONYMOUS, "$ac_cv_mmap_anonymous",
[Define if <sys/mman.h> defines MAP_ANONYMOUS and mmap()'ing with MAP_ANONYMOUS works.])
AC_CACHE_CHECK([whether mprotect works],
ac_cv_mprotect_works, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
ac_cv_mprotect_works=yes
dnl First the tests that should segfault
for test_def in NONE_READ NONE_WRITE READ_WRITE; do
AC_TRY_RUN([
#define CONFIGURE_TEST_VM_MAP
#define TEST_VM_PROT_$test_def
#include "../Unix/vm_alloc.cpp"
], ac_cv_mprotect_works=no, rm -f core,
dnl When cross-compiling, do not assume anything
ac_cv_mprotect_works="guessing no"
)
done
AC_TRY_RUN([
#define CONFIGURE_TEST_VM_MAP
#define TEST_VM_PROT_RDWR_WRITE
#include "../Unix/vm_alloc.cpp"
], , ac_cv_mprotect_works=no,
dnl When cross-compiling, do not assume anything
ac_cv_mprotect_works="guessing no"
)
AC_LANG_RESTORE
]
)
dnl Remove support for mmap() if mprotect() does not work
if [[ "x$have_mmap_vm" = "xyes" ]]; then
case $ac_cv_mprotect_works in
*yes) have_mmap_vm=yes;;
*no) have_mmap_vm=no;;
esac
fi
AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_mmap_vm,
[Define if your system has a working mmap()-based memory allocator.])
fi dnl HAVE_MMAP_VM
dnl Check if we can modify the __PAGEZERO segment for use as Low Memory
AC_CACHE_CHECK([whether __PAGEZERO can be Low Memory area 0x0000-0x2000],
ac_cv_pagezero_hack, [
ac_cv_pagezero_hack=no
if AC_TRY_COMMAND([Darwin/testlmem.sh 0x2000]); then
ac_cv_pagezero_hack=yes
dnl might as well skip the test for mmap-able low memory
ac_cv_can_map_lm=no
fi
])
AC_TRANSLATE_DEFINE(PAGEZERO_HACK, "$ac_cv_pagezero_hack",
[Define if the __PAGEZERO Mach-O Low Memory Globals hack works on this system.])
dnl Check if we can mmap 0x2000 bytes from 0x0000
AC_CACHE_CHECK([whether we can map Low Memory area 0x0000-0x2000],
ac_cv_can_map_lm, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_RUN([
#include "../Unix/vm_alloc.cpp"
int main(void) { /* returns 0 if we could map the lowmem globals */
volatile char * lm = 0;
if (vm_init() < 0) exit(1);
if (vm_acquire_fixed(0, 0x2000) < 0) exit(1);
lm[0] = 'z';
if (vm_release((char *)lm, 0x2000) < 0) exit(1);
vm_exit(); exit(0);
}
], ac_cv_can_map_lm=yes, ac_cv_can_map_lm=no,
dnl When cross-compiling, do not assume anything.
ac_cv_can_map_lm="guessing no"
)
AC_LANG_RESTORE
]
)
dnl Check signal handlers need to be reinstalled
AC_CACHE_CHECK([whether signal handlers need to be reinstalled],
ac_cv_signal_need_reinstall, [
@ -653,87 +469,13 @@ AC_CACHE_CHECK([whether sigaction handlers need to be reinstalled],
AC_TRANSLATE_DEFINE(SIGACTION_NEED_REINSTALL, "$ac_cv_sigaction_need_reinstall",
[Define if your system requires sigactions to be reinstalled.])
dnl Check if Mach exceptions supported.
AC_CACHE_CHECK([whether your system supports Mach exceptions],
ac_cv_have_mach_exceptions, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_RUN([
#define HAVE_MACH_EXCEPTIONS 1
#define CONFIGURE_TEST_SIGSEGV_RECOVERY
#include "../Unix/vm_alloc.cpp"
#include "../Unix/sigsegv.cpp"
], [
sigsegv_recovery=mach
ac_cv_have_mach_exceptions=yes
],
ac_cv_have_mach_exceptions=no,
dnl When cross-compiling, do not assume anything.
ac_cv_have_mach_exceptions=no
)
AC_LANG_RESTORE
]
)
AC_TRANSLATE_DEFINE(HAVE_MACH_EXCEPTIONS, "$ac_cv_have_mach_exceptions",
[Define if your system supports Mach exceptions.])
dnl Otherwise, check if extended signals are supported.
if [[ -z "$sigsegv_recovery" ]]; then
AC_CACHE_CHECK([whether your system supports extended signal handlers],
ac_cv_have_extended_signals, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_RUN([
#define HAVE_SIGINFO_T 1
#define CONFIGURE_TEST_SIGSEGV_RECOVERY
#include "../Unix/vm_alloc.cpp"
#include "../Unix/sigsegv.cpp"
], [
sigsegv_recovery=siginfo
ac_cv_have_extended_signals=yes
],
ac_cv_have_extended_signals=no,
dnl When cross-compiling, do not assume anything.
ac_cv_have_extended_signals=no
)
AC_LANG_RESTORE
]
)
AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals",
[Define if your system support extended signals.])
fi
dnl Otherwise, check for subterfuges.
if [[ -z "$sigsegv_recovery" ]]; then
AC_CACHE_CHECK([whether we then have a subterfuge for your system],
ac_cv_have_sigcontext_hack, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_RUN([
#define HAVE_SIGCONTEXT_SUBTERFUGE 1
#define CONFIGURE_TEST_SIGSEGV_RECOVERY
#include "../Unix/vm_alloc.cpp"
#include "../Unix/sigsegv.cpp"
], [
sigsegv_recovery=sigcontext
ac_cv_have_sigcontext_hack=yes
],
ac_cv_have_sigcontext_hack=no,
dnl When cross-compiling, do not assume anything.
ac_cv_have_sigcontext_hack=no
)
AC_LANG_RESTORE
])
AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, "$ac_cv_have_sigcontext_hack",
[Define if we know a hack to replace siginfo_t->si_addr member.])
fi
dnl Check if we can ignore the fault (instruction skipping in SIGSEGV handler)
AC_CACHE_CHECK([whether we can skip instruction in SIGSEGV handler],
ac_cv_have_skip_instruction, [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_RUN([
#include "config_macosx.h"
#define HAVE_SIGSEGV_SKIP_INSTRUCTION 1
#define CONFIGURE_TEST_SIGSEGV_RECOVERY
#include "../Unix/vm_alloc.cpp"
@ -748,11 +490,8 @@ AC_CACHE_CHECK([whether we can skip instruction in SIGSEGV handler],
AC_TRANSLATE_DEFINE(HAVE_SIGSEGV_SKIP_INSTRUCTION, "$ac_cv_have_skip_instruction",
[Define if we can ignore the fault (instruction skipping in SIGSEGV handler).])
dnl Can we do Video on SEGV Signals ?
CAN_VOSF=no
if [[ -n "$sigsegv_recovery" ]]; then
CAN_VOSF=yes
fi
dnl We can do Video on SEGV Signals
CAN_VOSF=yes
dnl A dummy program that returns always true
AC_PATH_PROG([BLESS], "true")
@ -796,10 +535,6 @@ AC_MSG_CHECKING([for the addressing mode to use])
for am in $ADDRESSING_TEST_ORDER; do
case $am in
real)
dnl Requires ability to mmap() Low Memory globals
if [[ "x$ac_cv_can_map_lm$ac_cv_pagezero_hack" = "xnono" ]]; then
continue
fi
dnl Requires VOSF screen updates
if [[ "x$CAN_VOSF" = "xno" ]]; then
continue
@ -809,10 +544,7 @@ AC_MSG_CHECKING([for the addressing mode to use])
WANT_VOSF=yes dnl we can use VOSF and we need it actually
DEFINES="$DEFINES -DREAL_ADDRESSING"
AC_DEFINE(REAL_ADDRESSING, 1, [Emulated memory is memory mapped to actual address.])
if [[ "x$ac_cv_pagezero_hack" = "xyes" ]]; then
BLESS=Darwin/lowmem
LDFLAGS="$LDFLAGS -pagezero_size 0x2000"
fi
LDFLAGS="$LDFLAGS -pagezero_size 0x2000"
break
;;
direct)
@ -1056,7 +788,6 @@ echo mon debugger support ................... : $WANT_MON
echo Build JIT compiler ..................... : $WANT_JIT
echo Build JIT with debug code .............. : $WANT_JIT_DEBUG
echo Addressing mode ........................ : $ADDRESSING_MODE
echo Bad memory access recovery type ........ : $sigsegv_recovery
echo Mac OS X development environment ....... : $IDE
echo
echo "Configuration done. Now type \"make\" (or \"make ide\")."

21
BasiliskII/src/Unix/Darwin/lowmem.c
View File

@ -32,6 +32,15 @@
static const char progname[] = "lowmem";
static int do_swap = 0;
static uint32_t target_uint32(uint32_t value)
{
if (do_swap)
value = NXSwapInt(value);
return value;
}
/*
* Under Mach there is very little assumed about the memory map of object
* files. It is the job of the loader to create the initial memory map of an
@ -89,13 +98,15 @@ main(int argc, const char *argv[])
* we do not care about that.
*/
machhead = (void *)addr;
if (machhead->magic != MH_MAGIC) {
if (machhead->magic == MH_CIGAM)
do_swap = 1;
if (target_uint32(machhead->magic) != MH_MAGIC) {
(void)fprintf(stderr, "%s: %s does not appear to be a Mach-O object file\n",
progname, argv[1]);
exit(1);
}
if (machhead->filetype != MH_EXECUTE) {
if (target_uint32(machhead->filetype) != MH_EXECUTE) {
(void)fprintf(stderr, "%s: %s does not appear to be an executable file\n",
progname, argv[1]);
exit(1);
@ -108,7 +119,7 @@ main(int argc, const char *argv[])
}
sc_cmd = (void *)&machhead[1];
if (sc_cmd->cmd != LC_SEGMENT){
if (target_uint32(sc_cmd->cmd) != LC_SEGMENT){
(void)fprintf(stderr, "%s: load segment not first command in %s\n",
progname, argv[1]);
exit(1);
@ -122,8 +133,8 @@ main(int argc, const char *argv[])
}
/* change the permissions */
sc_cmd->maxprot = VM_PROT_ALL;
sc_cmd->initprot = VM_PROT_ALL;
sc_cmd->maxprot = target_uint32(VM_PROT_ALL);
sc_cmd->initprot = target_uint32(VM_PROT_ALL);
/*
* We do not make __PAGEZERO 8K in this program because then