Changeset 5bb8e45 in mainline for arch/mips32/src/exception.c

Timestamp:

2005-12-13T01:38:50Z (20 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

5a95b25

Parents:

c52ed6b

Message:

Added support for mips breakpoints.
We have a kind of kernel debugger
Breakpoints on JMP/Branch instructions are not supported and
they are reported after the breakpoint is fired and exited as
a BranchDelay exception. If we found a way, how to detect these
instructions, we would be able to support them as 'one-time' breakpoints.

File:

• arch/mips32/src/exception.c (modified) (2 diffs)

arch/mips32/src/exception.c

@@ -40 +40 @@
 #include <func.h>
 #include <console/kconsole.h>
+#include <arch/debugger.h>
 
 static char * exctable[] = {
@@ -88 +89 @@
 {
         struct exception_regdump *pstate = (struct exception_regdump *)data;
-        char *symbol = get_symtab_entry(pstate->epc);
 
-#ifdef CONFIG_DEBUG     
-        printf("***Breakpoint %p in %s.\n", pstate->epc, symbol);
-        printf("***Type 'exit' to exit kconsole.\n");
-        /* Umm..we should rather set some 'debugstate' here */
-        haltstate = 1;
-        kconsole("debug");
-        haltstate = 0;
-#endif
-
+#ifdef CONFIG_DEBUG
+        debugger_bpoint(pstate);
+#else
         /* it is necessary to not re-execute BREAK instruction after 
            returning from Exception handler
            (see page 138 in R4000 Manual for more information) */
         pstate->epc += 4;
+#endif
 }