aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc64/kernel/misctrap.S
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2008-04-29 02:38:50 -0700
committerDavid S. Miller <davem@davemloft.net>2008-04-29 02:38:50 -0700
commite2fdd7fd99dd68b77caaf2a2272b75b5da890de7 (patch)
treed2b6d3a9b50e4d2ced793430d2b1414f790666a3 /arch/sparc64/kernel/misctrap.S
parent4d7ffa49909a830f5f926a3280731d01e29f31fb (diff)
sparc: Add kgdb support.
Current limitations: 1) On SMP single stepping has some fundamental issues, shared with other sw single-step architectures such as mips and arm. 2) On 32-bit sparc we don't support SMP kgdb yet. That requires some reworking of the IPI mechanisms and infrastructure on that platform. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/misctrap.S')
-rw-r--r--arch/sparc64/kernel/misctrap.S10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/misctrap.S b/arch/sparc64/kernel/misctrap.S
index b257497ddde..753b4f031bf 100644
--- a/arch/sparc64/kernel/misctrap.S
+++ b/arch/sparc64/kernel/misctrap.S
@@ -1,3 +1,13 @@
+#ifdef CONFIG_KGDB
+ .globl arch_kgdb_breakpoint
+ .type arch_kgdb_breakpoint,#function
+arch_kgdb_breakpoint:
+ ta 0x72
+ retl
+ nop
+ .size arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
+#endif
+
.type __do_privact,#function
__do_privact:
mov TLB_SFSR, %g3