Various updates.

* Removed some variants of the SYS_GETINFO calls from the kernel;
  replaced them with new PM and utils libary functionality. Fixed
  bugs in utils library that used old get_kenv() variant.
* Implemented a buffer in the kernel to gather random data.
  Memory driver periodically checks this for /dev/random.
  A better random algorithm can now be implemented in the driver.
  Removed SYS_RANDOM; the SYS_GETINFO call is used instead.
* Remove SYS_KMALLOC from the kernel. Memory allocation can now
  be done at the process manager with new 'other' library functions.

lib/other/Makefile

@@ -10,6 +10,8 @@ LIBRARY	= ../libc.a
 all:	$(LIBRARY)
 
 OBJECTS	= \
+	$(LIBRARY)(_allocmem.o) \
+	$(LIBRARY)(_freemem.o) \
 	$(LIBRARY)(_brk.o) \
 	$(LIBRARY)(_reboot.o) \
 	$(LIBRARY)(_seekdir.o) \
@@ -64,6 +66,12 @@ $(LIBRARY):	$(OBJECTS)
 	aal cr $@ *.o
 	rm *.o
 
+$(LIBRARY)(_allocmem.o):	_allocmem.c
+	$(CC1) _allocmem.c
+
+$(LIBRARY)(_freemem.o):	_freemem.c
+	$(CC1) _freemem.c
+
 $(LIBRARY)(_brk.o):	_brk.c
 	$(CC1) _brk.c
 

lib/other/_allocmem.c

@@ -0,0 +1,16 @@
+#include <lib.h>
+#define allocmem	_allocmem
+#include <unistd.h>
+
+
+PUBLIC int allocmem(size, base)
+phys_bytes size;			/* size of mem chunk requested */
+phys_bytes *base;			/* return base address */
+{
+  message m;
+  m.m4_l1 = size;		
+  if (_syscall(MM, ALLOCMEM, &m) < 0) return(-1);
+  *base = m.m4_l2;
+  return(0);
+}
+

lib/other/_freemem.c

@@ -0,0 +1,16 @@
+#include <lib.h>
+#define freemem	_freemem
+#include <unistd.h>
+
+
+PUBLIC int freemem(size, base)
+phys_bytes size;			/* size of mem chunk requested */
+phys_bytes base;			/* base address of mem chunk */
+{
+  message m;
+  m.m4_l1 = size;		
+  m.m4_l2 = base;		
+  if (_syscall(MM, FREEMEM, &m) < 0) return(-1);
+  return(0);
+}
+

lib/syscall/Makefile

@@ -9,6 +9,8 @@ OBJECTS	= \
 	$(LIBRARY)(_exit.o) \
 	$(LIBRARY)(access.o) \
 	$(LIBRARY)(alarm.o) \
+	$(LIBRARY)(allocmem.o) \
+	$(LIBRARY)(freemem.o) \
 	$(LIBRARY)(brk.o) \
 	$(LIBRARY)(cfgetispeed.o) \
 	$(LIBRARY)(cfgetospeed.o) \
@@ -117,6 +119,12 @@ $(LIBRARY)(access.o):	access.s
 $(LIBRARY)(alarm.o):	alarm.s
 	$(CC1) alarm.s
 
+$(LIBRARY)(allocmem.o):	allocmem.s
+	$(CC1) allocmem.s
+
+$(LIBRARY)(freemem.o):	freemem.s
+	$(CC1) freemem.s
+
 $(LIBRARY)(brk.o):	brk.s
 	$(CC1) brk.s
 

lib/syscall/allocmem.s

@@ -0,0 +1,7 @@
+.sect .text
+.extern	__allocmem
+.define	_allocmem
+.align 2
+
+_allocmem:
+	jmp	__allocmem

lib/syscall/freemem.s

@@ -0,0 +1,7 @@
+.sect .text
+.extern	__freemem
+.define	_freemem
+.align 2
+
+_freemem:
+	jmp	__freemem

lib/syslib/Makefile

@@ -26,7 +26,6 @@ OBJECTS	= \
 	$(LIBSYS)(sys_xit.o) \
 	$(LIBSYS)(sys_sdevio.o) \
 	$(LIBSYS)(sys_getinfo.o) \
-	$(LIBSYS)(sys_kmalloc.o) \
 	$(LIBSYS)(sys_irqctl.o) \
 	$(LIBSYS)(sys_eniop.o) \
 	$(LIBSYS)(sys_segctl.o) \
@@ -96,9 +95,6 @@ $(LIBSYS)(sys_sdevio.o):	sys_sdevio.c
 $(LIBSYS)(sys_getinfo.o):	sys_getinfo.c
 	$(CC1) sys_getinfo.c
 
-$(LIBSYS)(sys_kmalloc.o):	sys_kmalloc.c
-	$(CC1) sys_kmalloc.c
-
 $(LIBSYS)(sys_irqctl.o):	sys_irqctl.c
 	$(CC1) sys_irqctl.c
 

lib/syslib/kprintf.c

@@ -1,4 +1,4 @@
-/*	printf() - kernel printf()			Author: Kees J. Bot
+/*	printf() - system services printf()		Author: Kees J. Bot
  *								15 Jan 1994
  */
 #define nil 0

lib/syslib/kputc.c

@@ -34,7 +34,7 @@ int c;
 	m.DIAG_PRINT_BUF = print_buf;
 	m.DIAG_PROC_NR = SELF;
 	m.m_type = DIAGNOSTICS;
-	if (_sendrec(TTY, &m) != 0) {
+	if (_sendrec(IS_PROC_NR, &m) != 0) {
 		m.m1_i1 = 2;
 		m.m1_i2 = buf_count;
 		m.m1_p1 = print_buf;

lib/utils/env_panic.c

@@ -9,9 +9,9 @@ char *key;		/* environment variable whose value is bogus */
 {
   static char value[EP_BUF_SIZE] = "<unknown>";
   int s;
-  if ((s=sys_getkenv(key, strlen(key), value, sizeof(value))) == 0) {
+  if ((s=get_mon_param(key, value, sizeof(value))) == 0) {
   	if (s != ESRCH)		/* only error allowed */
-  	printf("WARNING: sys_getkenv() failed in env_panic(): %d\n", s);
+  	printf("WARNING: get_mon_param() failed in env_panic(): %d\n", s);
   }
   printf("Bad environment setting: '%s = %s'\n", key, value);
   panic("","", NO_NUM);

lib/utils/env_parse.c

@@ -33,7 +33,7 @@ long min, max;		/* minimum and maximum values for the parameter */
 
   if ((s=get_mon_param(env, value, sizeof(value))) != 0) { 
       if (s == ESRCH) return(EP_UNSET);		/* only error allowed */ 
-      printf("WARNING: sys_getkenv() failed in env_parse(): %d\n",s);
+      printf("WARNING: get_mon_param() failed in env_parse(): %d\n",s);
       return(EP_EGETKENV);
   }
   val = value;

lib/utils/env_prefix.c

@@ -17,9 +17,9 @@ char *prefix;		/* prefix to test for */
   int s;
   size_t n;
 
-  if ((s = sys_getkenv(env, strlen(env), value, sizeof(value))) != 0) {
+  if ((s = get_mon_param(env, value, sizeof(value))) != 0) {
   	if (s != ESRCH)		/* only error allowed */
-  	printf("WARNING: sys_getkenv() failed in env_prefix(): %d\n", s);	
+  	printf("WARNING: get_mon_param() failed in env_prefix(): %d\n", s);	
   }
   n = strlen(prefix);
   return(value != NULL