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Diffstat (limited to 'arch/ppc/xmon')
-rw-r--r--arch/ppc/xmon/xmon.c270
1 files changed, 72 insertions, 198 deletions
diff --git a/arch/ppc/xmon/xmon.c b/arch/ppc/xmon/xmon.c
index 8565f49b8b0b..be7869e39465 100644
--- a/arch/ppc/xmon/xmon.c
+++ b/arch/ppc/xmon/xmon.c
@@ -9,6 +9,7 @@
#include <linux/smp.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
+#include <linux/kallsyms.h>
#include <asm/ptrace.h>
#include <asm/string.h>
#include <asm/prom.h>
@@ -93,8 +94,7 @@ static void take_input(char *);
static unsigned read_spr(int);
static void write_spr(int, unsigned);
static void super_regs(void);
-static void print_sysmap(void);
-static void sysmap_lookup(void);
+static void symbol_lookup(void);
static void remove_bpts(void);
static void insert_bpts(void);
static struct bpt *at_breakpoint(unsigned pc);
@@ -103,7 +103,6 @@ static void cacheflush(void);
#ifdef CONFIG_SMP
static void cpu_cmd(void);
#endif /* CONFIG_SMP */
-static int pretty_print_addr(unsigned long addr);
static void csum(void);
#ifdef CONFIG_BOOTX_TEXT
static void vidcmds(void);
@@ -120,8 +119,6 @@ extern void longjmp(u_int *, int);
extern void xmon_enter(void);
extern void xmon_leave(void);
-extern char* xmon_find_symbol(unsigned long addr, unsigned long* saddr);
-extern unsigned long xmon_symbol_to_addr(char* symbol);
static unsigned start_tb[NR_CPUS][2];
static unsigned stop_tb[NR_CPUS][2];
@@ -148,7 +145,6 @@ Commands:\n\
mm move a block of memory\n\
ms set a block of memory\n\
md compare two blocks of memory\n\
- M print System.map\n\
r print registers\n\
S print special registers\n\
t print backtrace\n\
@@ -175,6 +171,35 @@ extern inline void __delay(unsigned int loops)
"r" (loops) : "ctr");
}
+/* Print an address in numeric and symbolic form (if possible) */
+static void xmon_print_symbol(unsigned long address, const char *mid,
+ const char *after)
+{
+ char *modname;
+ const char *name = NULL;
+ unsigned long offset, size;
+ static char tmpstr[128];
+
+ printf("%.8lx", address);
+ if (setjmp(bus_error_jmp) == 0) {
+ debugger_fault_handler = handle_fault;
+ sync();
+ name = kallsyms_lookup(address, &size, &offset, &modname,
+ tmpstr);
+ sync();
+ /* wait a little while to see if we get a machine check */
+ __delay(200);
+ }
+ debugger_fault_handler = NULL;
+
+ if (name) {
+ printf("%s%s+%#lx/%#lx", mid, name, offset, size);
+ if (modname)
+ printf(" [%s]", modname);
+ }
+ printf("%s", after);
+}
+
static void get_tb(unsigned *p)
{
unsigned hi, lo, hiagain;
@@ -454,7 +479,7 @@ cmds(struct pt_regs *excp)
dump();
break;
case 'l':
- sysmap_lookup();
+ symbol_lookup();
break;
case 'r':
if (excp != NULL)
@@ -466,9 +491,6 @@ cmds(struct pt_regs *excp)
else
excprint(excp);
break;
- case 'M':
- print_sysmap();
- break;
case 'S':
super_regs();
break;
@@ -825,20 +847,19 @@ backtrace(struct pt_regs *excp)
for (; sp != 0; sp = stack[0]) {
if (mread(sp, stack, sizeof(stack)) != sizeof(stack))
break;
- pretty_print_addr(stack[1]);
- printf(" ");
+ printf("[%.8lx] ", stack);
+ xmon_print_symbol(stack[1], " ", "\n");
if (stack[1] == (unsigned) &ret_from_except
|| stack[1] == (unsigned) &ret_from_except_full
|| stack[1] == (unsigned) &ret_from_syscall) {
if (mread(sp+16, &regs, sizeof(regs)) != sizeof(regs))
break;
- printf("\nexception:%x [%x] %x ", regs.trap, sp+16,
+ printf("exception:%x [%x] %x\n", regs.trap, sp+16,
regs.nip);
sp = regs.gpr[1];
if (mread(sp, stack, sizeof(stack)) != sizeof(stack))
break;
}
- printf("\n");
}
}
@@ -859,11 +880,10 @@ excprint(struct pt_regs *fp)
#ifdef CONFIG_SMP
printf("cpu %d: ", smp_processor_id());
#endif /* CONFIG_SMP */
- printf("vector: %x at pc = ", fp->trap);
- pretty_print_addr(fp->nip);
- printf(", lr = ");
- pretty_print_addr(fp->link);
- printf("\nmsr = %x, sp = %x [%x]\n", fp->msr, fp->gpr[1], fp);
+ printf("vector: %x at pc=", fp->trap);
+ xmon_print_symbol(fp->nip, ": ", ", lr=");
+ xmon_print_symbol(fp->link, ": ", "\n");
+ printf("msr = %x, sp = %x [%x]\n", fp->msr, fp->gpr[1], fp);
trap = TRAP(fp);
if (trap == 0x300 || trap == 0x600)
printf("dar = %x, dsisr = %x\n", fp->dar, fp->dsisr);
@@ -951,24 +971,6 @@ extern char exc_prolog;
extern char dec_exc;
void
-print_sysmap(void)
-{
- extern char *sysmap;
- if ( sysmap ) {
- printf("System.map: \n");
- if( setjmp(bus_error_jmp) == 0 ) {
- debugger_fault_handler = handle_fault;
- sync();
- xmon_puts(sysmap);
- sync();
- }
- debugger_fault_handler = NULL;
- }
- else
- printf("No System.map\n");
-}
-
-void
super_regs(void)
{
int i, cmd;
@@ -1738,7 +1740,7 @@ scanhex(unsigned *vp)
printf("invalid register name '%%%s'\n", regname);
return 0;
} else if (c == '$') {
- static char symname[64];
+ static char symname[128];
int i;
for (i=0; i<63; i++) {
c = inchar();
@@ -1749,7 +1751,14 @@ scanhex(unsigned *vp)
symname[i] = c;
}
symname[i++] = 0;
- *vp = xmon_symbol_to_addr(symname);
+ *vp = 0;
+ if (setjmp(bus_error_jmp) == 0) {
+ debugger_fault_handler = handle_fault;
+ sync();
+ *vp = kallsyms_lookup_name(symname);
+ sync();
+ }
+ debugger_fault_handler = NULL;
if (!(*vp)) {
printf("unknown symbol\n");
return 0;
@@ -1840,169 +1849,34 @@ take_input(char *str)
lineptr = str;
}
-void
-sysmap_lookup(void)
+static void
+symbol_lookup(void)
{
int type = inchar();
unsigned addr;
- static char tmp[64];
- char* cur;
-
- extern char *sysmap;
- extern unsigned long sysmap_size;
- if ( !sysmap || !sysmap_size )
- return;
-
- switch(type) {
- case 'a':
- if (scanhex(&addr)) {
- pretty_print_addr(addr);
- printf("\n");
- }
- termch = 0;
- break;
- case 's':
- getstring(tmp, 64);
- if( setjmp(bus_error_jmp) == 0 ) {
- debugger_fault_handler = handle_fault;
- sync();
- cur = sysmap;
- do {
- cur = strstr(cur, tmp);
- if (cur) {
- static char res[64];
- char *p, *d;
- p = cur;
- while(p > sysmap && *p != 10)
- p--;
- if (*p == 10) p++;
- d = res;
- while(*p && p < (sysmap + sysmap_size) && *p != 10)
- *(d++) = *(p++);
- *(d++) = 0;
- printf("%s\n", res);
- cur++;
- }
- } while (cur);
- sync();
- }
- debugger_fault_handler = NULL;
- termch = 0;
- break;
- }
-}
+ static char tmp[128];
-static int
-pretty_print_addr(unsigned long addr)
-{
- char *sym;
- unsigned long saddr;
-
- printf("%08x", addr);
- sym = xmon_find_symbol(addr, &saddr);
- if (sym)
- printf(" (%s+0x%x)", sym, addr-saddr);
- return (sym != 0);
-}
-
-char*
-xmon_find_symbol(unsigned long addr, unsigned long* saddr)
-{
- static char rbuffer[64];
- char *p, *ep, *limit;
- unsigned long prev, next;
- char* psym;
-
- extern char *sysmap;
- extern unsigned long sysmap_size;
- if ( !sysmap || !sysmap_size )
- return NULL;
-
- prev = 0;
- psym = NULL;
- p = sysmap;
- limit = p + sysmap_size;
- if( setjmp(bus_error_jmp) == 0 ) {
- debugger_fault_handler = handle_fault;
- sync();
- do {
- next = simple_strtoul(p, &p, 16);
- if (next > addr && prev <= addr) {
- if (!psym)
- goto bail;
- ep = rbuffer;
- p = psym;
- while(*p && p < limit && *p == 32)
- p++;
- while(*p && p < limit && *p != 10 && (ep - rbuffer) < 63)
- *(ep++) = *(p++);
- *(ep++) = 0;
- if (saddr)
- *saddr = prev;
- debugger_fault_handler = NULL;
- return rbuffer;
- }
- prev = next;
- psym = p;
- while(*p && p < limit && *p != 10)
- p++;
- if (*p) p++;
- } while(*p && p < limit && next);
-bail:
- sync();
+ switch (type) {
+ case 'a':
+ if (scanhex(&addr))
+ xmon_print_symbol(addr, ": ", "\n");
+ termch = 0;
+ break;
+ case 's':
+ getstring(tmp, 64);
+ if (setjmp(bus_error_jmp) == 0) {
+ debugger_fault_handler = handle_fault;
+ sync();
+ addr = kallsyms_lookup_name(tmp);
+ if (addr)
+ printf("%s: %lx\n", tmp, addr);
+ else
+ printf("Symbol '%s' not found.\n", tmp);
+ sync();
+ }
+ debugger_fault_handler = NULL;
+ termch = 0;
+ break;
}
- debugger_fault_handler = NULL;
- return NULL;
}
-unsigned long
-xmon_symbol_to_addr(char* symbol)
-{
- char *p, *cur;
- char *match = NULL;
- int goodness = 0;
- int result = 0;
-
- extern char *sysmap;
- extern unsigned long sysmap_size;
- if ( !sysmap || !sysmap_size )
- return 0;
-
- if( setjmp(bus_error_jmp) == 0 ) {
- debugger_fault_handler = handle_fault;
- sync();
- cur = sysmap;
- while(cur) {
- cur = strstr(cur, symbol);
- if (cur) {
- int gd = 1;
-
- /* best match if equal, better match if
- * begins with
- */
- if (cur == sysmap || *(cur-1) == ' ') {
- gd++;
- if (cur[strlen(symbol)] == 10)
- gd++;
- }
- if (gd > goodness) {
- match = cur;
- goodness = gd;
- if (gd == 3)
- break;
- }
- cur++;
- }
- }
- if (goodness) {
- p = match;
- while(p > sysmap && *p != 10)
- p--;
- if (*p == 10) p++;
- result = simple_strtoul(p, &p, 16);
- }
- sync();
- }
- debugger_fault_handler = NULL;
- return result;
-}
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