diff options
| -rw-r--r-- | sys/amd64/amd64/db_trace.c | 82 |
1 files changed, 8 insertions, 74 deletions
diff --git a/sys/amd64/amd64/db_trace.c b/sys/amd64/amd64/db_trace.c index 39297d9b2ed0..67322adeaabc 100644 --- a/sys/amd64/amd64/db_trace.c +++ b/sys/amd64/amd64/db_trace.c @@ -188,9 +188,7 @@ db_ss(struct db_variable *vp, db_expr_t *valuep, int op) #define TRAP_INTERRUPT 5 static void db_nextframe(struct amd64_frame **, db_addr_t *, struct thread *); -static int db_numargs(struct amd64_frame *); -static void db_print_stack_entry(const char *, int, char **, long *, db_addr_t, - void *); +static void db_print_stack_entry(const char *, db_addr_t, void *); static void decode_syscall(int, struct thread *); static const char * watchtype_str(int type); @@ -198,62 +196,11 @@ int amd64_set_watch(int watchnum, unsigned long watchaddr, int size, int access, struct dbreg *d); int amd64_clr_watch(int watchnum, struct dbreg *d); -/* - * Figure out how many arguments were passed into the frame at "fp". - */ -static int -db_numargs(fp) - struct amd64_frame *fp; -{ -#if 1 - return (0); /* regparm, needs dwarf2 info */ -#else - long *argp; - int inst; - int args; - - argp = (long *)db_get_value((long)&fp->f_retaddr, 8, FALSE); - /* - * XXX etext is wrong for LKMs. We should attempt to interpret - * the instruction at the return address in all cases. This - * may require better fault handling. - */ - if (argp < (long *)btext || argp >= (long *)etext) { - args = 5; - } else { - inst = db_get_value((long)argp, 4, FALSE); - if ((inst & 0xff) == 0x59) /* popl %ecx */ - args = 1; - else if ((inst & 0xffff) == 0xc483) /* addl $Ibs, %esp */ - args = ((inst >> 16) & 0xff) / 4; - else - args = 5; - } - return (args); -#endif -} - static void -db_print_stack_entry(name, narg, argnp, argp, callpc, frame) - const char *name; - int narg; - char **argnp; - long *argp; - db_addr_t callpc; - void *frame; +db_print_stack_entry(const char *name, db_addr_t callpc, void *frame) { - db_printf("%s(", name); -#if 0 - while (narg) { - if (argnp) - db_printf("%s=", *argnp++); - db_printf("%lr", (long)db_get_value((long)argp, 8, FALSE)); - argp++; - if (--narg != 0) - db_printf(","); - } -#endif - db_printf(") at "); + + db_printf("%s() at ", name); db_printsym(callpc, DB_STGY_PROC); if (frame != NULL) db_printf("/frame 0x%lx", (register_t)frame); @@ -348,7 +295,7 @@ db_nextframe(struct amd64_frame **fp, db_addr_t *ip, struct thread *td) return; } - db_print_stack_entry(name, 0, 0, 0, rip, &(*fp)->f_frame); + db_print_stack_entry(name, rip, &(*fp)->f_frame); /* * Point to base of trapframe which is just above the @@ -388,13 +335,9 @@ db_backtrace(struct thread *td, struct trapframe *tf, struct amd64_frame *frame, db_addr_t pc, int count) { struct amd64_frame *actframe; -#define MAXNARG 16 - char *argnames[MAXNARG], **argnp = NULL; const char *name; - long *argp; db_expr_t offset; c_db_sym_t sym; - int narg; boolean_t first; if (count == -1) @@ -444,22 +387,13 @@ db_backtrace(struct thread *td, struct trapframe *tf, * Don't try to walk back on a stack for a * process that hasn't actually been run yet. */ - db_print_stack_entry(name, 0, 0, 0, pc, - actframe); + db_print_stack_entry(name, pc, actframe); break; } first = FALSE; } - argp = &actframe->f_arg0; - narg = MAXNARG; - if (sym != NULL && db_sym_numargs(sym, &narg, argnames)) { - argnp = argnames; - } else { - narg = db_numargs(frame); - } - - db_print_stack_entry(name, narg, argnp, argp, pc, actframe); + db_print_stack_entry(name, pc, actframe); if (actframe != frame) { /* `frame' belongs to caller. */ @@ -473,7 +407,7 @@ db_backtrace(struct thread *td, struct trapframe *tf, if (INKERNEL((long)pc) && !INKERNEL((long)frame)) { sym = db_search_symbol(pc, DB_STGY_ANY, &offset); db_symbol_values(sym, &name, NULL); - db_print_stack_entry(name, 0, 0, 0, pc, frame); + db_print_stack_entry(name, pc, frame); break; } if (!INKERNEL((long) frame)) { |