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authorMichael I. Bushnell <mib@gnu.org>1993-11-04 07:35:08 +0000
committerMichael I. Bushnell <mib@gnu.org>1993-11-04 07:35:08 +0000
commit74f11878ad54c8090a5643aa3615b51b2e5e6ffb (patch)
tree0b72c222c7278710d110a7c7e50a3061fa46b62e
parent71910a66141f95a90360d8dfce730411769cfeee (diff)
Formerly boot.c.~3~
-rw-r--r--boot/boot.c109
1 files changed, 92 insertions, 17 deletions
diff --git a/boot/boot.c b/boot/boot.c
index 95478f22..bb7ab5b6 100644
--- a/boot/boot.c
+++ b/boot/boot.c
@@ -24,21 +24,12 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <mach/notify.h>
#include <errno.h>
#include <device/device.h>
+#include <a.out.h>
#include "notify_S.h"
#include "exec_S.h"
#include "device_S.h"
-
-/* These will prevent the Hurd-ish versions from being used */
-
-#define task_by_pid(foo) syscall (-33, foo)
-#define myfork() syscall (2)
-#define execve(foo1, foo2, foo3) syscall (59, foo1, foo2, foo3)
-#define write(foo1, foo2, foo3) syscall (4, foo1, foo2, foo3)
-#define read(foo1, foo2, foo3) syscall (3, foo1, foo2, foo3)
-#define getpid() syscall (20)
-
mach_port_t privileged_host_port, master_device_port;
mach_port_t pseudo_master_device_port;
mach_port_t receive_set;
@@ -49,6 +40,46 @@ mach_port_t php_child_name, psmdp_child_name;
task_t child_task;
mach_port_t bootport;
+/* These will prevent the Hurd-ish versions from being used */
+
+int
+task_by_pid (int pid)
+{
+ return syscall (-33, pid);
+}
+
+int
+write (int fd,
+ void *buf,
+ int buflen)
+{
+ return syscall (4, fd, buf, buflen);
+}
+
+int
+read (int fd,
+ void *buf,
+ int buflen)
+{
+ return syscall (3, fd, buf, buflen);
+}
+
+int
+open (char *name,
+ int flags,
+ int mode)
+{
+ return syscall (5, name, flags, mode);
+}
+
+int
+lseek (int fd,
+ int off,
+ int whence)
+{
+ return syscall (19, fd, off, whence);
+}
+
int
request_server (mach_msg_header_t *inp,
mach_msg_header_t *outp)
@@ -58,6 +89,45 @@ request_server (mach_msg_header_t *inp,
|| notify_server (inp, outp));
}
+vm_address_t
+load_image (task_t t,
+ char *file)
+{
+ int fd;
+ struct exec x;
+ char *buf;
+ int headercruft;
+ vm_address_t base = 0x10000;
+ int amount;
+ vm_address_t bsspagestart, bssstart, stackaddr;
+ int magic;
+
+ fd = open (file, 0, 0);
+
+ read (fd, &x, sizeof (struct exec));
+ magic = N_MAGIC (x);
+
+ headercruft = sizeof (struct exec) * (magic == ZMAGIC);
+
+ amount = round_page (headercruft + x.a_text + x.a_data);
+ vm_allocate (mach_task_self (), (u_int *)&buf, amount, 1);
+ lseek (fd, -headercruft, 1);
+ read (fd, buf, amount);
+ vm_allocate (t, &base, amount, 0);
+ vm_write (t, base, (u_int) buf, amount);
+ if (magic != OMAGIC)
+ vm_protect (t, base, trunc_page (headercruft + x.a_text),
+ 0, VM_PROT_READ | VM_PROT_EXECUTE);
+ vm_deallocate (mach_task_self (), (u_int)buf, amount);
+
+ bssstart = base + x.a_text + x.a_data + headercruft;
+ bsspagestart = round_page (bssstart);
+ vm_allocate (t, &bsspagestart, x.a_bss - (bsspagestart - bssstart), 0);
+
+ return x.a_entry;
+}
+
+
int
main (int argc, char **argv, char **envp)
{
@@ -65,6 +135,10 @@ main (int argc, char **argv, char **envp)
thread_t newthread;
mach_port_t foo;
vm_address_t startpc;
+ char msg[] = "Boot is here.\n";
+ char c;
+
+ write (1, msg, sizeof msg);
privileged_host_port = task_by_pid (-1);
master_device_port = task_by_pid (-2);
@@ -111,6 +185,10 @@ main (int argc, char **argv, char **envp)
thread_create (newtask, &newthread);
start_thread (newtask, newthread, startpc);
+
+ write (1, "pausing\n", 8);
+ read (0, &c, 1);
+ thread_resume (newthread);
mach_msg_server (request_server, __vm_page_size * 2, receive_set);
}
@@ -187,21 +265,18 @@ S_exec_startup (mach_port_t port,
/* The argv string has nulls in it; so we use %c for the nulls
and fill with constant zero. */
- nc = sprintf (argv, "-x%c%d%c%d%c%s%c", '\0', php_child_name, '\0',
- psmdp_child_name, "hd0a", '\0');
+ nc = sprintf (argv, "[BOOTSTRAP]%c-x%c%d%c%d%c%s%c", '\0', '\0',
+ php_child_name, '\0', psmdp_child_name, '\0', "hd0e", '\0');
if (nc > *argvlen)
vm_allocate (mach_task_self (), (vm_address_t *)argvP, nc, 1);
- else
- bcopy (argv, *argvP, nc);
+ bcopy (argv, *argvP, nc);
*argvlen = nc;
*base_addr = *stack_size = 0;
*flags = 0;
- *argvlen = 0;
-
*envplen = 0;
if (*portarraylen < INIT_PORT_MAX)
@@ -268,7 +343,7 @@ ds_device_write (device_t device,
if (device != pseudo_console)
return D_NO_SUCH_DEVICE;
- *bytes_written = write (1, *data, datalen);
+ *bytes_written = write (1, (void *)*data, datalen);
return (*bytes_written == -1 ? D_IO_ERROR : D_SUCCESS);
}