Darwin patch (initial patch by Pierre d'Herbemont)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@980 c046a42c-6fe2-441c-8c8c-71466251a162

Darwin patch (initial patch by Pierre d'Herbemont)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@980 c046a42c-6fe2-441c-8c8c-71466251a162
bellard
1 parent 1d43a717
Showing 14 changed files with 185 additions and 106 deletions
Makefile
Makefile.target
configure
cpu-all.h
cpu-exec.c
dyngen-exec.h
exec.c
linux-user/elfload.c
linux-user/main.c
linux-user/mmap.c
oss.c
target-i386/exec.h
target-i386/op.c
vl.c
 include config-host.mak
 CFLAGS=-Wall -O2 -g
+ifdef CONFIG_DARWIN
+CFLAGS+= -mdynamic-no-pic
+endif
 ifdef CONFIG_WIN32
 CFLAGS+=-fpack-struct 
 endif
@@ -100,6 +100,7 @@ LDFLAGS+=-Wl,-T,$(SRC_PATH)/amd64.ld
 endif
 ifeq ($(ARCH),ppc)
+CFLAGS+= -D__powerpc__
 OP_CFLAGS=$(CFLAGS)
 LDFLAGS+=-Wl,-T,$(SRC_PATH)/ppc.ld
 endif
@@ -152,6 +153,10 @@ ifeq ($(HAVE_GCC3_OPTIONS),yes)
 OP_CFLAGS+=-fno-reorder-blocks -fno-optimize-sibling-calls
 endif
+ifeq ($(CONFIG_DARWIN),yes)
+OP_CFLAGS+= -mdynamic-no-pic
+endif
+
 #########################################################
 DEFINES+=-D_GNU_SOURCE
@@ -267,9 +272,11 @@ endif
 ifndef CONFIG_SOFTMMU
 VL_LDFLAGS+=-Wl,-T,$(SRC_PATH)/i386-vl.ld 
 endif
+ifndef CONFIG_DARWIN
 ifndef CONFIG_WIN32
 VL_LIBS=-lutil
 endif
+endif
 $(QEMU_SYSTEM): $(VL_OBJS) libqemu.a
 	$(CC) $(VL_LDFLAGS) -o $@ $^ $(LIBS) $(SDL_LIBS) $(VL_LIBS)
@@ -88,12 +88,18 @@ bsd=&quot;yes&quot;
 OpenBSD)
 bsd="yes"
 ;;
+Darwin)
+bsd="yes"
+darwin="yes"
+;;
 *) ;;
 esac
 if [ "$bsd" = "yes" ] ; then
-  make="gmake"
-  target_list="i386-softmmu"
+  if [ ! "$darwin" = "yes" ] ; then
+    make="gmake"
+  fi
+  target_list="i386-softmmu ppc-softmmu"
 fi
 # find source path
@@ -391,6 +397,10 @@ if test &quot;$mingw32&quot; = &quot;yes&quot; ; then
 elif test -f "/usr/include/byteswap.h" ; then
   echo "#define HAVE_BYTESWAP_H 1" >> $config_h
 fi
+if test "$darwin" = "yes" ; then
+  echo "CONFIG_DARWIN=yes" >> $config_mak
+  echo "#define CONFIG_DARWIN 1" >> $config_h
+fi
 if test "$gdbstub" = "yes" ; then
   echo "CONFIG_GDBSTUB=yes" >> $config_mak
   echo "#define CONFIG_GDBSTUB 1" >> $config_h
@@ -417,10 +427,13 @@ echo &quot;\&quot;&quot; &gt;&gt; $config_h
 echo "SRC_PATH=$source_path" >> $config_mak
 echo "TARGET_DIRS=$target_list" >> $config_mak
+# XXX: suppress that
 if [ "$bsd" = "yes" ] ; then
   echo "#define O_LARGEFILE 0" >> $config_h
   echo "#define lseek64 lseek" >> $config_h
+  echo "#define mkstemp64 mkstemp" >> $config_h
   echo "#define ftruncate64 ftruncate" >> $config_h
+  echo "#define off64_t off_t" >> $config_h
   echo "#define MAP_ANONYMOUS MAP_ANON" >> $config_h
   echo "#define _BSD 1" >> $config_h
 fi
@@ -538,12 +538,12 @@ static inline void stfq_raw(void *ptr, double v)
 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)
-extern unsigned long real_host_page_size;
-extern unsigned long host_page_bits;
-extern unsigned long host_page_size;
-extern unsigned long host_page_mask;
+extern unsigned long qemu_real_host_page_size;
+extern unsigned long qemu_host_page_bits;
+extern unsigned long qemu_host_page_size;
+extern unsigned long qemu_host_page_mask;
-#define HOST_PAGE_ALIGN(addr) (((addr) + host_page_size - 1) & host_page_mask)
+#define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask)
 /* same as PROT_xxx */
 #define PAGE_READ      0x0001
@@ -852,24 +852,72 @@ int cpu_signal_handler(int host_signum, struct siginfo *info,
                              &uc->uc_sigmask, puc);
 }
-#elif defined(__powerpc)
+#elif defined(__powerpc__)
-int cpu_signal_handler(int host_signum, struct siginfo *info, 
+/***********************************************************************
+ * signal context platform-specific definitions
+ * From Wine
+ */
+#ifdef linux
+/* All Registers access - only for local access */
+# define REG_sig(reg_name, context)		((context)->uc_mcontext.regs->reg_name)
+/* Gpr Registers access  */
+# define GPR_sig(reg_num, context)		REG_sig(gpr[reg_num], context)
+# define IAR_sig(context)			REG_sig(nip, context)	/* Program counter */
+# define MSR_sig(context)			REG_sig(msr, context)   /* Machine State Register (Supervisor) */
+# define CTR_sig(context)			REG_sig(ctr, context)   /* Count register */
+# define XER_sig(context)			REG_sig(xer, context) /* User's integer exception register */
+# define LR_sig(context)			REG_sig(link, context) /* Link register */
+# define CR_sig(context)			REG_sig(ccr, context) /* Condition register */
+/* Float Registers access  */
+# define FLOAT_sig(reg_num, context)		(((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num])
+# define FPSCR_sig(context)			(*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4)))
+/* Exception Registers access */
+# define DAR_sig(context)			REG_sig(dar, context)
+# define DSISR_sig(context)			REG_sig(dsisr, context)
+# define TRAP_sig(context)			REG_sig(trap, context)
+#endif /* linux */
+
+#ifdef __APPLE__
+# include <sys/ucontext.h>
+typedef struct ucontext SIGCONTEXT;
+/* All Registers access - only for local access */
+# define REG_sig(reg_name, context)		((context)->uc_mcontext->ss.reg_name)
+# define FLOATREG_sig(reg_name, context)	((context)->uc_mcontext->fs.reg_name)
+# define EXCEPREG_sig(reg_name, context)	((context)->uc_mcontext->es.reg_name)
+# define VECREG_sig(reg_name, context)		((context)->uc_mcontext->vs.reg_name)
+/* Gpr Registers access */
+# define GPR_sig(reg_num, context)		REG_sig(r##reg_num, context)
+# define IAR_sig(context)			REG_sig(srr0, context)	/* Program counter */
+# define MSR_sig(context)			REG_sig(srr1, context)  /* Machine State Register (Supervisor) */
+# define CTR_sig(context)			REG_sig(ctr, context)
+# define XER_sig(context)			REG_sig(xer, context) /* Link register */
+# define LR_sig(context)			REG_sig(lr, context)  /* User's integer exception register */
+# define CR_sig(context)			REG_sig(cr, context)  /* Condition register */
+/* Float Registers access */
+# define FLOAT_sig(reg_num, context)		FLOATREG_sig(fpregs[reg_num], context)
+# define FPSCR_sig(context)			((double)FLOATREG_sig(fpscr, context))
+/* Exception Registers access */
+# define DAR_sig(context)			EXCEPREG_sig(dar, context)     /* Fault registers for coredump */
+# define DSISR_sig(context)			EXCEPREG_sig(dsisr, context)
+# define TRAP_sig(context)			EXCEPREG_sig(exception, context) /* number of powerpc exception taken */
+#endif /* __APPLE__ */
+
+int cpu_signal_handler(int host_signum, siginfo *info, 
                        void *puc)
 {
     struct ucontext *uc = puc;
-    struct pt_regs *regs = uc->uc_mcontext.regs;
     unsigned long pc;
     int is_write;
-    pc = regs->nip;
+    pc = IAR_sig(uc);
     is_write = 0;
 #if 0
     /* ppc 4xx case */
-    if (regs->dsisr & 0x00800000)
+    if (DSISR_sig(uc) & 0x00800000)
         is_write = 1;
 #else
-    if (regs->trap != 0x400 && (regs->dsisr & 0x02000000))
+    if (TRAP_sig(uc) != 0x400 && (DSISR_sig(uc) & 0x02000000))
         is_write = 1;
 #endif
     return handle_cpu_signal(pc, (unsigned long)info->si_addr, 
@@ -59,8 +59,14 @@ extern int fprintf(FILE *, const char *, ...);
 extern int printf(const char *, ...);
 #undef NULL
 #define NULL 0
-#ifdef _BSD
+#if defined(_BSD) && !defined(__APPLE__)
 #include <ieeefp.h>
+
+#define FE_TONEAREST   FP_RN
+#define FE_DOWNWARD    FP_RM
+#define FE_UPWARD      FP_RP
+#define FE_TOWARDZERO  FP_RZ
+#define fesetround(x)  fpsetround(x)
 #else
 #include <fenv.h>
 #endif
@@ -100,10 +100,10 @@ typedef struct VirtPageDesc {
 static void io_mem_init(void);
-unsigned long real_host_page_size;
-unsigned long host_page_bits;
-unsigned long host_page_size;
-unsigned long host_page_mask;
+unsigned long qemu_real_host_page_size;
+unsigned long qemu_host_page_bits;
+unsigned long qemu_host_page_size;
+unsigned long qemu_host_page_mask;
 /* XXX: for system emulation, it could just be an array */
 static PageDesc *l1_map[L1_SIZE];
@@ -127,21 +127,21 @@ int loglevel;
 static void page_init(void)
 {
-    /* NOTE: we can always suppose that host_page_size >=
+    /* NOTE: we can always suppose that qemu_host_page_size >=
        TARGET_PAGE_SIZE */
 #ifdef _WIN32
-    real_host_page_size = 4096;
+    qemu_real_host_page_size = 4096;
 #else
-    real_host_page_size = getpagesize();
+    qemu_real_host_page_size = getpagesize();
 #endif
-    if (host_page_size == 0)
-        host_page_size = real_host_page_size;
-    if (host_page_size < TARGET_PAGE_SIZE)
-        host_page_size = TARGET_PAGE_SIZE;
-    host_page_bits = 0;
-    while ((1 << host_page_bits) < host_page_size)
-        host_page_bits++;
-    host_page_mask = ~(host_page_size - 1);
+    if (qemu_host_page_size == 0)
+        qemu_host_page_size = qemu_real_host_page_size;
+    if (qemu_host_page_size < TARGET_PAGE_SIZE)
+        qemu_host_page_size = TARGET_PAGE_SIZE;
+    qemu_host_page_bits = 0;
+    while ((1 << qemu_host_page_bits) < qemu_host_page_size)
+        qemu_host_page_bits++;
+    qemu_host_page_mask = ~(qemu_host_page_size - 1);
 #if !defined(CONFIG_USER_ONLY)
     virt_valid_tag = 1;
 #endif
@@ -831,12 +831,12 @@ static inline void tb_alloc_page(TranslationBlock *tb,
         /* force the host page as non writable (writes will have a
            page fault + mprotect overhead) */
-        host_start = page_addr & host_page_mask;
-        host_end = host_start + host_page_size;
+        host_start = page_addr & qemu_host_page_mask;
+        host_end = host_start + qemu_host_page_size;
         prot = 0;
         for(addr = host_start; addr < host_end; addr += TARGET_PAGE_SIZE)
             prot |= page_get_flags(addr);
-        mprotect((void *)host_start, host_page_size, 
+        mprotect((void *)host_start, qemu_host_page_size, 
                  (prot & PAGE_BITS) & ~PAGE_WRITE);
 #ifdef DEBUG_TB_INVALIDATE
         printf("protecting code page: 0x%08lx\n", 
@@ -1737,12 +1737,12 @@ int page_unprotect(unsigned long address, unsigned long pc, void *puc)
     PageDesc *p, *p1;
     unsigned long host_start, host_end, addr;
-    host_start = address & host_page_mask;
+    host_start = address & qemu_host_page_mask;
     page_index = host_start >> TARGET_PAGE_BITS;
     p1 = page_find(page_index);
     if (!p1)
         return 0;
-    host_end = host_start + host_page_size;
+    host_end = host_start + qemu_host_page_size;
     p = p1;
     prot = 0;
     for(addr = host_start;addr < host_end; addr += TARGET_PAGE_SIZE) {
@@ -1754,7 +1754,7 @@ int page_unprotect(unsigned long address, unsigned long pc, void *puc)
     if (prot & PAGE_WRITE_ORG) {
         pindex = (address - host_start) >> TARGET_PAGE_BITS;
         if (!(p1[pindex].flags & PAGE_WRITE)) {
-            mprotect((void *)host_start, host_page_size, 
+            mprotect((void *)host_start, qemu_host_page_size, 
                      (prot & PAGE_BITS) | PAGE_WRITE);
             p1[pindex].flags |= PAGE_WRITE;
             /* and since the content will be modified, we must invalidate
@@ -13,6 +13,16 @@
 #include "qemu.h"
 #include "disas.h"
+/* this flag is uneffective under linux too, should be deleted */
+#ifndef MAP_DENYWRITE
+#define MAP_DENYWRITE 0
+#endif
+
+/* should probably go in elf.h */
+#ifndef ELIBBAD
+#define ELIBBAD 80
+#endif
+
 #ifdef TARGET_I386
 #define ELF_START_MMAP 0x80000000
@@ -332,7 +342,7 @@ static void * get_free_page(void)
     /* User-space version of kernel get_free_page.  Returns a page-aligned
      * page-sized chunk of memory.
      */
-    retval = (void *)target_mmap(0, host_page_size, PROT_READ|PROT_WRITE, 
+    retval = (void *)target_mmap(0, qemu_host_page_size, PROT_READ|PROT_WRITE, 
                                  MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
     if((long)retval == -1) {
@@ -346,7 +356,7 @@ static void * get_free_page(void)
 static void free_page(void * pageaddr)
 {
-    target_munmap((unsigned long)pageaddr, host_page_size);
+    target_munmap((unsigned long)pageaddr, qemu_host_page_size);
 }
 /*
@@ -502,7 +512,7 @@ unsigned long setup_arg_pages(unsigned long p, struct linux_binprm * bprm,
     if (size < MAX_ARG_PAGES*TARGET_PAGE_SIZE)
         size = MAX_ARG_PAGES*TARGET_PAGE_SIZE;
     error = target_mmap(0, 
-                        size + host_page_size,
+                        size + qemu_host_page_size,
                         PROT_READ | PROT_WRITE,
                         MAP_PRIVATE | MAP_ANONYMOUS,
                         -1, 0);
@@ -511,7 +521,7 @@ unsigned long setup_arg_pages(unsigned long p, struct linux_binprm * bprm,
         exit(-1);
     }
     /* we reserve one extra page at the top of the stack as guard */
-    target_mprotect(error + size, host_page_size, PROT_NONE);
+    target_mprotect(error + size, qemu_host_page_size, PROT_NONE);
     stack_base = error + size - MAX_ARG_PAGES*TARGET_PAGE_SIZE;
     p += stack_base;
@@ -562,10 +572,10 @@ static void padzero(unsigned long elf_bss)
            of the file may not be mapped. A better fix would be to
            patch target_mmap(), but it is more complicated as the file
            size must be known */
-        if (real_host_page_size < host_page_size) {
+        if (qemu_real_host_page_size < qemu_host_page_size) {
             unsigned long end_addr, end_addr1;
-            end_addr1 = (elf_bss + real_host_page_size - 1) & 
-                ~(real_host_page_size - 1);
+            end_addr1 = (elf_bss + qemu_real_host_page_size - 1) & 
+                ~(qemu_real_host_page_size - 1);
             end_addr = HOST_PAGE_ALIGN(elf_bss);
             if (end_addr1 < end_addr) {
                 mmap((void *)end_addr1, end_addr - end_addr1,
@@ -574,9 +584,9 @@ static void padzero(unsigned long elf_bss)
             }
         }
-        nbyte = elf_bss & (host_page_size-1);
+        nbyte = elf_bss & (qemu_host_page_size-1);
         if (nbyte) {
-	    nbyte = host_page_size - nbyte;
+	    nbyte = qemu_host_page_size - nbyte;
 	    fpnt = (char *) elf_bss;
 	    do {
 		*fpnt++ = 0;
@@ -811,7 +821,7 @@ static unsigned long load_elf_interp(struct elfhdr * interp_elf_ex,
 	 * bss page.
 	 */
 	padzero(elf_bss);
-	elf_bss = TARGET_ELF_PAGESTART(elf_bss + host_page_size - 1); /* What we have mapped so far */
+	elf_bss = TARGET_ELF_PAGESTART(elf_bss + qemu_host_page_size - 1); /* What we have mapped so far */
 	/* Map the last of the bss segment */
 	if (last_bss > elf_bss) {
@@ -1252,7 +1262,7 @@ static int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * r
 	       and some applications "depend" upon this behavior.
 	       Since we do not have the power to recompile these, we
 	       emulate the SVr4 behavior.  Sigh.  */
-	    mapped_addr = target_mmap(0, host_page_size, PROT_READ | PROT_EXEC,
+	    mapped_addr = target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
                                       MAP_FIXED | MAP_PRIVATE, -1, 0);
     }
@@ -28,6 +28,11 @@
 #define DEBUG_LOGFILE "/tmp/qemu.log"
+#ifdef __APPLE__
+#include <crt_externs.h>
+# define environ  (*_NSGetEnviron())
+#endif
+
 static const char *interp_prefix = CONFIG_QEMU_PREFIX;
 #if defined(__i386__) && !defined(CONFIG_STATIC)
@@ -977,9 +982,9 @@ int main(int argc, char **argv)
         } else if (!strcmp(r, "L")) {
             interp_prefix = argv[optind++];
         } else if (!strcmp(r, "p")) {
-            host_page_size = atoi(argv[optind++]);
-            if (host_page_size == 0 ||
-                (host_page_size & (host_page_size - 1)) != 0) {
+            qemu_host_page_size = atoi(argv[optind++]);
+            if (qemu_host_page_size == 0 ||
+                (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
                 fprintf(stderr, "page size must be a power of two\n");
                 exit(1);
             }
@@ -1006,8 +1011,8 @@ int main(int argc, char **argv)
     /* Scan interp_prefix dir for replacement files. */
     init_paths(interp_prefix);
-    /* NOTE: we need to init the CPU at this stage to get the
-       host_page_size */
+    /* NOTE: we need to init the CPU at this stage to get
+       qemu_host_page_size */
     env = cpu_init();
     if (elf_exec(filename, argv+optind, environ, regs, info) != 0) {
@@ -53,7 +53,7 @@ int target_mprotect(unsigned long start, unsigned long len, int prot)
     if (len == 0)
         return 0;
-    host_start = start & host_page_mask;
+    host_start = start & qemu_host_page_mask;
     host_end = HOST_PAGE_ALIGN(end);
     if (start > host_start) {
         /* handle host page containing start */
@@ -61,27 +61,27 @@ int target_mprotect(unsigned long start, unsigned long len, int prot)
         for(addr = host_start; addr < start; addr += TARGET_PAGE_SIZE) {
             prot1 |= page_get_flags(addr);
         }
-        if (host_end == host_start + host_page_size) {
+        if (host_end == host_start + qemu_host_page_size) {
             for(addr = end; addr < host_end; addr += TARGET_PAGE_SIZE) {
                 prot1 |= page_get_flags(addr);
             }
             end = host_end;
         }
-        ret = mprotect((void *)host_start, host_page_size, prot1 & PAGE_BITS);
+        ret = mprotect((void *)host_start, qemu_host_page_size, prot1 & PAGE_BITS);
         if (ret != 0)
             return ret;
-        host_start += host_page_size;
+        host_start += qemu_host_page_size;
     }
     if (end < host_end) {
         prot1 = prot;
         for(addr = end; addr < host_end; addr += TARGET_PAGE_SIZE) {
             prot1 |= page_get_flags(addr);
         }
-        ret = mprotect((void *)(host_end - host_page_size), host_page_size, 
+        ret = mprotect((void *)(host_end - qemu_host_page_size), qemu_host_page_size, 
                        prot1 & PAGE_BITS);
         if (ret != 0)
             return ret;
-        host_end -= host_page_size;
+        host_end -= qemu_host_page_size;
     }
     /* handle the pages in the middle */
@@ -102,7 +102,7 @@ int mmap_frag(unsigned long host_start,
     unsigned long host_end, ret, addr;
     int prot1, prot_new;
-    host_end = host_start + host_page_size;
+    host_end = host_start + qemu_host_page_size;
     /* get the protection of the target pages outside the mapping */
     prot1 = 0;
@@ -113,7 +113,7 @@ int mmap_frag(unsigned long host_start,
     if (prot1 == 0) {
         /* no page was there, so we allocate one */
-        ret = (long)mmap((void *)host_start, host_page_size, prot, 
+        ret = (long)mmap((void *)host_start, qemu_host_page_size, prot, 
                          flags | MAP_ANONYMOUS, -1, 0);
         if (ret == -1)
             return ret;
@@ -130,18 +130,18 @@ int mmap_frag(unsigned long host_start,
         /* adjust protection to be able to read */
         if (!(prot1 & PROT_WRITE))
-            mprotect((void *)host_start, host_page_size, prot1 | PROT_WRITE);
+            mprotect((void *)host_start, qemu_host_page_size, prot1 | PROT_WRITE);
         /* read the corresponding file data */
         pread(fd, (void *)start, end - start, offset);
         /* put final protection */
         if (prot_new != (prot1 | PROT_WRITE))
-            mprotect((void *)host_start, host_page_size, prot_new);
+            mprotect((void *)host_start, qemu_host_page_size, prot_new);
     } else {
         /* just update the protection */
         if (prot_new != prot1) {
-            mprotect((void *)host_start, host_page_size, prot_new);
+            mprotect((void *)host_start, qemu_host_page_size, prot_new);
         }
     }
     return 0;
@@ -188,7 +188,7 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
     len = TARGET_PAGE_ALIGN(len);
     if (len == 0)
         return start;
-    host_start = start & host_page_mask;
+    host_start = start & qemu_host_page_mask;
     if (!(flags & MAP_FIXED)) {
 #if defined(__alpha__) || defined(__sparc__) || defined(__x86_64__)
@@ -198,10 +198,10 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
             last_start += HOST_PAGE_ALIGN(len);
         }
 #endif
-        if (host_page_size != real_host_page_size) {
+        if (qemu_host_page_size != qemu_real_host_page_size) {
             /* NOTE: this code is only for debugging with '-p' option */
             /* reserve a memory area */
-            host_len = HOST_PAGE_ALIGN(len) + host_page_size - TARGET_PAGE_SIZE;
+            host_len = HOST_PAGE_ALIGN(len) + qemu_host_page_size - TARGET_PAGE_SIZE;
             host_start = (long)mmap((void *)host_start, host_len, PROT_NONE, 
                                     MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
             if (host_start == -1)
@@ -217,7 +217,7 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
             flags |= MAP_FIXED;
         } else {
             /* if not fixed, no need to do anything */
-            host_offset = offset & host_page_mask;
+            host_offset = offset & qemu_host_page_mask;
             host_len = len + offset - host_offset;
             start = (long)mmap((void *)host_start, host_len, 
                                prot, flags, fd, host_offset);
@@ -238,7 +238,7 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
     /* worst case: we cannot map the file because the offset is not
        aligned, so we read it */
     if (!(flags & MAP_ANONYMOUS) &&
-        (offset & ~host_page_mask) != (start & ~host_page_mask)) {
+        (offset & ~qemu_host_page_mask) != (start & ~qemu_host_page_mask)) {
         /* msync() won't work here, so we return an error if write is
            possible while it is a shared mapping */
         if ((flags & MAP_TYPE) == MAP_SHARED &&
@@ -260,7 +260,7 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
     /* handle the start of the mapping */
     if (start > host_start) {
-        if (host_end == host_start + host_page_size) {
+        if (host_end == host_start + qemu_host_page_size) {
             /* one single host page */
             ret = mmap_frag(host_start, start, end,
                             prot, flags, fd, offset);
@@ -268,21 +268,21 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
                 return ret;
             goto the_end1;
         }
-        ret = mmap_frag(host_start, start, host_start + host_page_size,
+        ret = mmap_frag(host_start, start, host_start + qemu_host_page_size,
                         prot, flags, fd, offset);
         if (ret == -1)
             return ret;
-        host_start += host_page_size;
+        host_start += qemu_host_page_size;
     }
     /* handle the end of the mapping */
     if (end < host_end) {
-        ret = mmap_frag(host_end - host_page_size, 
-                        host_end - host_page_size, host_end,
+        ret = mmap_frag(host_end - qemu_host_page_size, 
+                        host_end - qemu_host_page_size, host_end,
                         prot, flags, fd, 
-                        offset + host_end - host_page_size - start);
+                        offset + host_end - qemu_host_page_size - start);
         if (ret == -1)
             return ret;
-        host_end -= host_page_size;
+        host_end -= qemu_host_page_size;
     }
     /* map the middle (easier) */
@@ -322,7 +322,7 @@ int target_munmap(unsigned long start, unsigned long len)
     if (len == 0)
         return -EINVAL;
     end = start + len;
-    host_start = start & host_page_mask;
+    host_start = start & qemu_host_page_mask;
     host_end = HOST_PAGE_ALIGN(end);
     if (start > host_start) {
@@ -331,14 +331,14 @@ int target_munmap(unsigned long start, unsigned long len)
         for(addr = host_start; addr < start; addr += TARGET_PAGE_SIZE) {
             prot |= page_get_flags(addr);
         }
-        if (host_end == host_start + host_page_size) {
+        if (host_end == host_start + qemu_host_page_size) {
             for(addr = end; addr < host_end; addr += TARGET_PAGE_SIZE) {
                 prot |= page_get_flags(addr);
             }
             end = host_end;
         }
         if (prot != 0)
-            host_start += host_page_size;
+            host_start += qemu_host_page_size;
     }
     if (end < host_end) {
         prot = 0;
@@ -346,7 +346,7 @@ int target_munmap(unsigned long start, unsigned long len)
             prot |= page_get_flags(addr);
         }
         if (prot != 0)
-            host_end -= host_page_size;
+            host_end -= qemu_host_page_size;
     }
     /* unmap what we can */
@@ -391,7 +391,7 @@ int target_msync(unsigned long start, unsigned long len, int flags)
     if (end == start)
         return 0;
-    start &= host_page_mask;
+    start &= qemu_host_page_mask;
     return msync((void *)start, end - start, flags);
 }
@@ -23,7 +23,7 @@
  */
 #include "vl.h"
-#ifndef _WIN32
+#if !defined(_WIN32) && !defined(__APPLE__)
 #include <ctype.h>
 #include <fcntl.h>
 #include <errno.h>
@@ -498,7 +498,7 @@ static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
 #define FPUC_EM 0x3f
-const CPU86_LDouble f15rk[7];
+extern const CPU86_LDouble f15rk[7];
 void helper_fldt_ST0_A0(void);
 void helper_fstt_ST0_A0(void);
@@ -528,9 +528,9 @@ void helper_frstor(uint8_t *ptr, int data32);
 void restore_native_fp_state(CPUState *env);
 void save_native_fp_state(CPUState *env);
-const uint8_t parity_table[256];
-const uint8_t rclw_table[32];
-const uint8_t rclb_table[32];
+extern const uint8_t parity_table[256];
+extern const uint8_t rclw_table[32];
+extern const uint8_t rclb_table[32];
 static inline uint32_t compute_eflags(void)
 {
@@ -1955,24 +1955,6 @@ void OPPROTO op_fldcw_A0(void)
     int rnd_type;
     env->fpuc = lduw((void *)A0);
     /* set rounding mode */
-#ifdef _BSD
-    switch(env->fpuc & RC_MASK) {
-    default:
-    case RC_NEAR:
-        rnd_type = FP_RN;
-        break;
-    case RC_DOWN:
-        rnd_type = FP_RM;
-        break;
-    case RC_UP:
-        rnd_type = FP_RP;
-        break;
-    case RC_CHOP:
-        rnd_type = FP_RZ;
-        break;
-    }
-    fpsetround(rnd_type);
-#else
     switch(env->fpuc & RC_MASK) {
     default:
     case RC_NEAR:
@@ -1989,7 +1971,6 @@ void OPPROTO op_fldcw_A0(void)
         break;
     }
     fesetround(rnd_type);
-#endif
 }
 void OPPROTO op_fclex(void)
@@ -40,7 +40,9 @@
 #include <sys/socket.h>
 #ifdef _BSD
 #include <sys/stat.h>
+#ifndef __APPLE__
 #include <libutil.h>
+#endif
 #else
 #include <linux/if.h>
 #include <linux/if_tun.h>
@@ -63,6 +65,7 @@
 #endif
 #ifdef CONFIG_SDL
+#include <SDL/SDL.h>
 #if defined(__linux__)
 /* SDL use the pthreads and they modify sigaction. We don't
    want that. */
@@ -909,6 +912,7 @@ static void init_timers(void)
            the emulated kernel requested a too high timer frequency */
         getitimer(ITIMER_REAL, &itv);
+#if defined(__linux__)
         if (itv.it_interval.tv_usec > 1000) {
             /* try to use /dev/rtc to have a faster timer */
             if (start_rtc_timer() < 0)
@@ -924,7 +928,9 @@ static void init_timers(void)
             sigaction(SIGIO, &act, NULL);
             fcntl(rtc_fd, F_SETFL, O_ASYNC);
             fcntl(rtc_fd, F_SETOWN, getpid());
-        } else {
+        } else 
+#endif /* defined(__linux__) */
+        {
         use_itimer:
             pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * 
                                    PIT_FREQ) / 1000000;
@@ -2622,8 +2628,8 @@ int main(int argc, char **argv)
 #ifdef CONFIG_SOFTMMU
 #ifdef _BSD
-    /* mallocs are always aligned on BSD. */
-    phys_ram_base = malloc(phys_ram_size);
+    /* mallocs are always aligned on BSD. valloc is better for correctness */
+    phys_ram_base = valloc(phys_ram_size);
 #else
     phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size);
 #endif