Various fixes for ZMAGIC. Thanks Theo

diff --git a/sys/lib/libsa/exec.c b/sys/lib/libsa/exec.c
index a86cbbd..0457fa0 100644 (file)
--- a/sys/lib/libsa/exec.c
+++ b/sys/lib/libsa/exec.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: exec.c,v 1.10 1997/03/25 20:30:41 niklas Exp $        */
+/*     $OpenBSD: exec.c,v 1.11 1997/03/27 18:13:32 weingart Exp $      */
 /*     $NetBSD: exec.c,v 1.15 1996/10/13 02:29:01 christos Exp $       */
 
 /*-
@@ -85,23 +85,30 @@ exec(path, loadaddr, howto)
                return;
        }
 
+#ifdef EXEC_DEBUG
+       printf("\nstruct exec {%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx}\n",
+               x.a_midmag, x.a_text, x.a_data, x.a_bss, x.a_syms,
+               x.a_entry, x.a_trsize, x.a_drsize);
+#endif
+
         /* Text */
        printf("%ld", x.a_text);
        addr = loadaddr;
-#ifdef NO_LSEEK
-       if (N_GETMAGIC(x) == ZMAGIC && read(io, (char *)addr,
-           (0x400 - sizeof(x))) == -1)
-#else
-       if (N_GETMAGIC(x) == ZMAGIC && lseek(io, 0x400, SEEK_SET) == -1)
-#endif
-               goto shread;
-       if (read(io, (char *)addr, x.a_text) != x.a_text)
+       i = x.a_text;
+       if (N_GETMAGIC(x) == ZMAGIC) {
+               bcopy((char *)&x, addr, sizeof x);
+               addr += sizeof x;
+               i -= sizeof x;
+       }
+       if (read(io, (char *)addr, i) != i)
                goto shread;
-       addr += x.a_text;
+       addr += i;
 #ifdef EXEC_DEBUG
+       printf("\ntext {%x, %x, %x, %x}\n",
+               addr[0], addr[1], addr[2], addr[3]);
        etxt = addr;
 #endif
-       if (N_GETMAGIC(x) == ZMAGIC || N_GETMAGIC(x) == NMAGIC)
+       if (N_GETMAGIC(x) == NMAGIC)
                while ((long)addr & (N_PAGSIZ(x) - 1))
                        *addr++ = 0;
 
@@ -153,12 +160,18 @@ exec(path, loadaddr, howto)
        /* and note the end address of all this */
        printf(" total=0x%lx", (u_long)addr);
 
+/* XXX - Hack alert!
+   This is no good, loadaddr is passed into
+   machdep_start(), and it should do whatever
+   is needed.
+
        x.a_entry += (long)loadaddr;
+*/
        printf(" start=0x%lx\n", x.a_entry);
 
 #ifdef EXEC_DEBUG
-        printf("loadaddr = 0x%x etxt = 0x%x daddr = 0x%x ssym=0x%x esym=0x%x\n",
-           loadaddr, etxt, daddr, ssym, esym);
+        printf("loadaddr=%p etxt=%p daddr=%p ssym=%p esym=%p\n",
+               loadaddr, etxt, daddr, ssym, esym);
         printf("\n\nReturn to boot...\n");
         getchar();
 #endif