Restore HP-UX support (removed 2007-01-29).

1 files changed, 74 insertions, 3 deletions

diff --git a/src/m/hp800.h b/src/m/hp800.h
index eed53183569..f48f4c8152e 100644
--- a/src/m/hp800.h
+++ b/src/m/hp800.h
@@ -69,10 +69,9 @@ Boston, MA 02110-1301, USA.  */
 #define XSET(var, type, ptr) \
    ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS))
 
-/* Definitions for GNU/Linux.  (HP/UX is unsupported because of the
-   removal of unexhp9k800.c due to lack of legal papers.)  */
+/* Common definitions for HPUX and GNU/Linux.  */
 
-#ifdef GNU_LINUX
+#if defined (__hpux) || defined (GNU_LINUX)
 /* Now define a symbol for the cpu type, if your compiler
    does not define it automatically:
    Ones defined so far include vax, m68000, ns16000, pyramid,
@@ -94,6 +93,12 @@ Boston, MA 02110-1301, USA.  */
 
 #define NO_REMAP
 
+#endif /* __hpux or GNU_LINUX */
+
+/* Stuff for just GNU/Linux.  */
+
+#ifdef GNU_LINUX
+
 /* Data type of load average, as read out of kmem.  */
 
 #define LOAD_AVE_TYPE long
@@ -104,6 +109,72 @@ Boston, MA 02110-1301, USA.  */
 
 #endif /* GNU_LINUX */
 
+/* Stuff for just HPUX.  */
+
+#ifdef __hpux
+
+/* Define VIRT_ADDR_VARIES if the virtual addresses of
+   pure and impure space as loaded can vary, and even their
+   relative order cannot be relied on.
+
+   Otherwise Emacs assumes that text space precedes data space,
+   numerically.  */
+
+#define VIRT_ADDR_VARIES
+
+/* the data segment on this machine always starts at address 0x40000000. */
+
+#define DATA_SEG_BITS 0x40000000
+
+#define DATA_START    0x40000000
+#define TEXT_START    0x00000000
+
+/* This machine requires completely different unexec code
+   which lives in a separate file.  Specify the file name.  */
+
+#define UNEXEC unexhp9k800.o
+
+#define LIBS_MACHINE
+#define LIBS_DEBUG
+
+/* Include the file bsdtty.h, since this machine has job control.  */
+#define NEED_BSDTTY
+
+/* Data type of load average, as read out of kmem.  */
+
+#define LOAD_AVE_TYPE double
+
+/* Convert that into an integer that is 100 for a load average of 1.0  */
+
+#define LOAD_AVE_CVT(x) ((int) (x * 100.0))
+
+/* The symbol in the kernel where the load average is found
+   is named _avenrun.  At this time there are two major flavors
+   of hp-ux (there is the s800 and s300 (s200) flavors).  The
+   differences are thusly moved to the corresponding machine description file.
+*/
+
+/* no underscore please */
+#define LDAV_SYMBOL "avenrun"
+
+#if 0   /* Supposedly no longer true.  */
+/* In hpux, for unknown reasons, S_IFLNK is defined even though
+   symbolic links do not exist.
+   Make sure our conditionals based on S_IFLNK are not confused.
+
+   Here we assume that stat.h is included before config.h
+   so that we can override it here.  */
+
+#undef S_IFLNK
+#endif
+
+/* On USG systems these have different names. */
+
+#define index strchr
+#define rindex strrchr
+
+#endif /* __hpux */
+
 /* Systems with GCC don't need to lose. */
 #ifdef __NetBSD__
 # ifdef __GNUC__