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- /*
- * utility to print the value of _stksize from gcc-cc1.ttp
- *
- * Usage: printstk [<filename>]
- * if <filename> is not specified defaults to .\gcc-cc1.ttp
- * ++jrb
- *
- * modified to print a value of _initial_stack in cases when this
- * is defined instead of _stksize -- mj
- */
-
- #include <stdio.h>
- #include <st-out.h>
-
- #if __STDC__
- #include <stdlib.h>
- #include <unistd.h>
- #include <string.h>
- #else
- #include <string.h>
- extern char *malloc();
- extern long lseek();
- #define size_t unsigned long
- #endif
-
- #ifndef FILENAME_MAX
- # define FILENAME_MAX 128
- #endif
-
- #ifdef WORD_ALIGNED
- # define SIZEOF_AEXEC ((2*sizeof(short)) + (6*sizeof(long)))
- # define SIZEOF_ASYM ((SYMLEN*sizeof(char)) + sizeof(short) + sizeof(long))
- # define SYM_OFFSET (sizeof(short) + (3*sizeof(long)))
- #endif
-
- static char *sym_names[] = { "__stksize", "__initial_stack" };
-
- long find_offset (fd, fn, what)
- int fd;
- char *fn;
- int *what;
- {
- struct aexec head;
- struct asym sym;
- int found;
- int all = 0;
- int index = 1;
-
- #ifndef WORD_ALIGNED
- if(read(fd, &head, sizeof(head)) != sizeof(head))
- #else
- if(read_head(fd, &head))
- #endif
- {
- perror(fn);
- exit(2);
- }
- if(head.a_magic != CMAGIC)
- {
- fprintf(stderr,"Invalid magic number %x\n", head.a_magic);
- exit(3);
- }
- if(head.a_syms == 0)
- {
- fprintf(stderr,"%s: no symbol table\n", fn);
- exit(4);
- }
- if(lseek(fd, head.a_text+head.a_data, 1) !=
- #ifndef WORD_ALIGNED
- (head.a_text+head.a_data+sizeof(head)))
- #else
- (head.a_text+head.a_data+SIZEOF_AEXEC))
- #endif
- {
- perror(fn);
- exit(5);
- }
- for(;;)
- {
- #ifndef WORD_ALIGNED
- if(index && (read(fd, &sym, sizeof(sym)) != sizeof(sym)))
- #else
- if(index && read_sym(fd, &sym))
- #endif
- {
- fprintf(stderr, "symbol _stksize not found\n");
- exit(6);
- }
- /* after symbol read check first for _stksize */
- index ^= 1;
- if (strncmp(sym_names[index], sym.a_name, 8) == 0)
- {
- if ((found = (sym.a_type & A_DATA)) || all++)
- break;
- }
- }
-
- if(!found)
- {
- fprintf(stderr, "symbol _stksize is undefined\n");
- exit(9);
- }
- *what = index;
- #ifndef WORD_ALIGNED
- return sym.a_value + sizeof(head);
- #else
- return sym.a_value + SIZEOF_AEXEC;
- #endif
- }
-
- int main(argc, argv)
- int argc;
- char **argv;
- {
- int fd;
- int what;
- long stksize, offset;
- char fn[FILENAME_MAX];
-
- if(argc > 1)
- (void) strcpy(fn, *++argv);
- else
- (void) strcpy(fn, "gcc-cc1.ttp");
-
- if((fd = open(fn, 0)) < 0)
- {
- perror(fn);
- exit(1);
- }
-
- offset = find_offset(fd, fn, &what);
-
- if(lseek(fd, offset, 0) != offset)
- {
- perror(fn);
- exit(7);
- }
- read(fd, &stksize, sizeof(long));
- printf("%s: %s is %ld (%dK)\n",
- fn, sym_names[what] + 1, stksize, (int)(stksize/1024));
-
- return close(fd);
- }
-
- #ifdef WORD_ALIGNED
- #ifndef atarist
- # define lread read
- # define lwrite write
- #endif
-
- /*
- * read header -- return !0 on err
- */
- #define ck_read(fd, addr, siz) \
- if((long)siz != lread(fd, addr, (long)siz)) return !0;
-
- int read_head (fd, a)
- int fd;
- struct aexec *a;
- {
- ck_read(fd, &a->a_magic, sizeof(a->a_magic));
- ck_read(fd, &a->a_text, sizeof(a->a_text));
- ck_read(fd, &a->a_data, sizeof(a->a_data));
- ck_read(fd, &a->a_bss, sizeof(a->a_bss));
- ck_read(fd, &a->a_syms, sizeof(a->a_syms));
- ck_read(fd, &a->a_AZero1, sizeof(a->a_AZero1));
- ck_read(fd, &a->a_AZero2, sizeof(a->a_AZero2));
- ck_read(fd, &a->a_isreloc, sizeof(a->a_isreloc));
- return 0;
- }
-
- int read_sym(fd, s)
- int fd;
- struct asym *s;
- {
- ck_read(fd, s->a_name, 8);
- ck_read(fd, &(s->a_type), sizeof(short));
- ck_read(fd, &(s->a_value), sizeof(long));
- return 0;
- }
- #endif
-