Messages in this thread Patch in this message | | | From | Jason Wessel <> | Subject | [PATCH 08/37] kgdb,sh: update superh kgdb exception handling | Date | Wed, 23 Dec 2009 15:19:21 -0600 |
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Implement kgdb_arch_pc() which adjusts the pc if it needs to be adjusted after a software breakpoint trap.
Implement kgdb_arch_set_pc() which is a new required function in the kgdb debug core.
When processing a single step return zero in the error exception field so that the debug core can distinguish between a single step trap and a breakpoint trap generically.
CC: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> --- arch/sh/kernel/kgdb.c | 14 +++++++++++++- 1 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/arch/sh/kernel/kgdb.c b/arch/sh/kernel/kgdb.c index 3e532d0..1ec03c9 100644 --- a/arch/sh/kernel/kgdb.c +++ b/arch/sh/kernel/kgdb.c @@ -237,6 +237,18 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, return -1; } +unsigned long kgdb_arch_pc(int exception, struct pt_regs *regs) +{ + if (exception == 60) + return instruction_pointer(regs) - 2; + return instruction_pointer(regs); +} + +void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long ip) +{ + regs->pc = ip; +} + /* * The primary entry points for the kgdb debug trap table entries. */ @@ -247,7 +259,7 @@ BUILD_TRAP_HANDLER(singlestep) local_irq_save(flags); regs->pc -= instruction_size(__raw_readw(regs->pc - 4)); - kgdb_handle_exception(vec >> 2, SIGTRAP, 0, regs); + kgdb_handle_exception(0, SIGTRAP, 0, regs); local_irq_restore(flags); } -- 1.6.4.rc1
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