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-rw-r--r--arch/sparc/Kconfig1
-rw-r--r--arch/sparc/defconfig139
-rw-r--r--arch/sparc/kernel/Makefile1
-rw-r--r--arch/sparc/kernel/entry.S125
-rw-r--r--arch/sparc/kernel/head.S9
-rw-r--r--arch/sparc/kernel/kgdb.c164
-rw-r--r--arch/sparc/kernel/sparc-stub.c724
-rw-r--r--arch/sparc64/Kconfig1
-rw-r--r--arch/sparc64/kernel/Makefile1
-rw-r--r--arch/sparc64/kernel/kgdb.c186
-rw-r--r--arch/sparc64/kernel/misctrap.S10
-rw-r--r--arch/sparc64/kernel/smp.c10
-rw-r--r--arch/sparc64/kernel/ttable.S2
-rw-r--r--arch/sparc64/mm/ultra.S27
-rw-r--r--include/asm-sparc/head.h11
-rw-r--r--include/asm-sparc/kgdb.h116
-rw-r--r--include/asm-sparc/system.h2
-rw-r--r--include/asm-sparc64/kgdb.h1
-rw-r--r--include/asm-sparc64/system.h5
-rw-r--r--include/asm-sparc64/ttable.h6
20 files changed, 581 insertions, 960 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 49590f8fe98c..d211fdb24584 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -68,6 +68,7 @@ config SPARC
default y
select HAVE_IDE
select HAVE_OPROFILE
+ select HAVE_ARCH_KGDB if !SMP
# Identify this as a Sparc32 build
config SPARC32
diff --git a/arch/sparc/defconfig b/arch/sparc/defconfig
index 6a2c57a2fe71..2e3a149ea0e7 100644
--- a/arch/sparc/defconfig
+++ b/arch/sparc/defconfig
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.25
-# Sun Apr 20 01:49:51 2008
+# Tue Apr 29 01:28:58 2008
#
CONFIG_MMU=y
CONFIG_HIGHMEM=y
@@ -217,12 +217,7 @@ CONFIG_IPV6_TUNNEL=m
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
-CONFIG_IP_SCTP=m
-# CONFIG_SCTP_DBG_MSG is not set
-CONFIG_SCTP_DBG_OBJCNT=y
-# CONFIG_SCTP_HMAC_NONE is not set
-# CONFIG_SCTP_HMAC_SHA1 is not set
-CONFIG_SCTP_HMAC_MD5=y
+# CONFIG_IP_SCTP is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
@@ -245,9 +240,7 @@ CONFIG_NET_PKTGEN=m
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
-CONFIG_AF_RXRPC=m
-# CONFIG_AF_RXRPC_DEBUG is not set
-# CONFIG_RXKAD is not set
+# CONFIG_AF_RXRPC is not set
#
# Wireless
@@ -390,7 +383,7 @@ CONFIG_DUMMY=m
# CONFIG_BONDING is not set
# CONFIG_MACVLAN is not set
# CONFIG_EQUALIZER is not set
-CONFIG_TUN=m
+# CONFIG_TUN is not set
# CONFIG_VETH is not set
# CONFIG_ARCNET is not set
# CONFIG_PHYLIB is not set
@@ -544,6 +537,7 @@ CONFIG_SERIAL_SUNSU_CONSOLE=y
# CONFIG_SERIAL_SUNSAB is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
+CONFIG_CONSOLE_POLL=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
@@ -595,6 +589,7 @@ CONFIG_SSB_POSSIBLE=y
# Multifunction device drivers
#
# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
#
# Multimedia devices
@@ -645,10 +640,6 @@ CONFIG_USB_ARCH_HAS_EHCI=y
# CONFIG_NEW_LEDS is not set
# CONFIG_INFINIBAND is not set
# CONFIG_RTC_CLASS is not set
-
-#
-# Userspace I/O
-#
# CONFIG_UIO is not set
#
@@ -680,16 +671,12 @@ CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
-CONFIG_XFS_FS=m
-CONFIG_XFS_QUOTA=y
-CONFIG_XFS_POSIX_ACL=y
-CONFIG_XFS_RT=y
+# CONFIG_XFS_FS is not set
# CONFIG_OCFS2_FS is not set
CONFIG_DNOTIFY=y
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
-CONFIG_QUOTACTL=y
CONFIG_AUTOFS_FS=m
CONFIG_AUTOFS4_FS=m
# CONFIG_FUSE_FS is not set
@@ -725,11 +712,9 @@ CONFIG_SYSFS=y
#
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
-# CONFIG_ECRYPT_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
-CONFIG_BEFS_FS=m
-# CONFIG_BEFS_DEBUG is not set
+# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_CRAMFS is not set
@@ -744,7 +729,6 @@ CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
# CONFIG_NFS_V3 is not set
# CONFIG_NFS_V4 is not set
-# CONFIG_NFS_DIRECTIO is not set
# CONFIG_NFSD is not set
CONFIG_ROOT_NFS=y
CONFIG_LOCKD=y
@@ -755,16 +739,10 @@ CONFIG_SUNRPC_GSS=m
CONFIG_RPCSEC_GSS_KRB5=m
# CONFIG_RPCSEC_GSS_SPKM3 is not set
# CONFIG_SMB_FS is not set
-CONFIG_CIFS=m
-# CONFIG_CIFS_STATS is not set
-# CONFIG_CIFS_WEAK_PW_HASH is not set
-# CONFIG_CIFS_XATTR is not set
-# CONFIG_CIFS_DEBUG2 is not set
-# CONFIG_CIFS_EXPERIMENTAL is not set
+# CONFIG_CIFS is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
-CONFIG_AFS_FS=m
-# CONFIG_AFS_DEBUG is not set
+# CONFIG_AFS_FS is not set
#
# Partition Types
@@ -821,6 +799,7 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_ENABLE_WARN_DEPRECATED is not set
CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_DEBUG_FS is not set
@@ -842,70 +821,105 @@ CONFIG_DETECT_SOFTLOCKUP=y
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_INFO is not set
# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_SG is not set
+CONFIG_FRAME_POINTER=y
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_SAMPLES is not set
+CONFIG_KGDB=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_KGDB_SERIAL_CONSOLE=y
+CONFIG_KGDB_TESTS=y
+# CONFIG_KGDB_TESTS_ON_BOOT is not set
# CONFIG_DEBUG_STACK_USAGE is not set
#
# Security options
#
-CONFIG_KEYS=y
-# CONFIG_KEYS_DEBUG_PROC_KEYS is not set
+# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITY_FILE_CAPABILITIES is not set
CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_BLKCIPHER=y
-# CONFIG_CRYPTO_SEQIV is not set
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_MANAGER=y
+# CONFIG_CRYPTO_GF128MUL is not set
+CONFIG_CRYPTO_NULL=m
+# CONFIG_CRYPTO_CRYPTD is not set
+CONFIG_CRYPTO_AUTHENC=y
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+CONFIG_CRYPTO_ECB=m
+# CONFIG_CRYPTO_LRW is not set
+CONFIG_CRYPTO_PCBC=m
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
CONFIG_CRYPTO_HMAC=y
# CONFIG_CRYPTO_XCBC is not set
-CONFIG_CRYPTO_NULL=m
+
+#
+# Digest
+#
+CONFIG_CRYPTO_CRC32C=m
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_SHA512=m
-# CONFIG_CRYPTO_WP512 is not set
# CONFIG_CRYPTO_TGR192 is not set
-# CONFIG_CRYPTO_GF128MUL is not set
-CONFIG_CRYPTO_ECB=m
-CONFIG_CRYPTO_CBC=y
-CONFIG_CRYPTO_PCBC=m
-# CONFIG_CRYPTO_LRW is not set
-# CONFIG_CRYPTO_XTS is not set
-# CONFIG_CRYPTO_CTR is not set
-# CONFIG_CRYPTO_GCM is not set
-# CONFIG_CRYPTO_CCM is not set
-# CONFIG_CRYPTO_CRYPTD is not set
-CONFIG_CRYPTO_DES=y
-# CONFIG_CRYPTO_FCRYPT is not set
-CONFIG_CRYPTO_BLOWFISH=m
-CONFIG_CRYPTO_TWOFISH=m
-CONFIG_CRYPTO_TWOFISH_COMMON=m
-CONFIG_CRYPTO_SERPENT=m
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
CONFIG_CRYPTO_AES=m
+# CONFIG_CRYPTO_ANUBIS is not set
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_BLOWFISH=m
+# CONFIG_CRYPTO_CAMELLIA is not set
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
-# CONFIG_CRYPTO_TEA is not set
-CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_KHAZAD is not set
-# CONFIG_CRYPTO_ANUBIS is not set
-# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+CONFIG_CRYPTO_SERPENT=m
+# CONFIG_CRYPTO_TEA is not set
+CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_TWOFISH_COMMON=m
+
+#
+# Compression
+#
CONFIG_CRYPTO_DEFLATE=y
-CONFIG_CRYPTO_MICHAEL_MIC=m
-CONFIG_CRYPTO_CRC32C=m
-# CONFIG_CRYPTO_CAMELLIA is not set
-# CONFIG_CRYPTO_TEST is not set
-CONFIG_CRYPTO_AUTHENC=y
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_HW is not set
@@ -913,6 +927,7 @@ CONFIG_CRYPTO_AUTHENC=y
# Library routines
#
CONFIG_BITREVERSE=y
+# CONFIG_GENERIC_FIND_FIRST_BIT is not set
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_ITU_T is not set
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 59700aaaae93..6e03a2a7863c 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -25,3 +25,4 @@ obj-$(CONFIG_PCI) += ebus.o
obj-$(CONFIG_SUN_PM) += apc.o pmc.o
obj-$(CONFIG_MODULES) += module.o sparc_ksyms.o
obj-$(CONFIG_SPARC_LED) += led.o
+obj-$(CONFIG_KGDB) += kgdb.o
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index 484c83d23eef..57d1bbdd0bd2 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -12,7 +12,6 @@
#include <asm/head.h>
#include <asm/asi.h>
#include <asm/smp.h>
-#include <asm/kgdb.h>
#include <asm/contregs.h>
#include <asm/ptrace.h>
#include <asm/asm-offsets.h>
@@ -45,91 +44,20 @@
_SV; _SV; _SV; _SV; _SV; _SV; _SV; \
_RS; _RS; _RS; _RS; _RS; _RS; _RS;
-/* First, KGDB low level things. This is a rewrite
- * of the routines found in the sparc-stub.c asm() statement
- * from the gdb distribution. This is also dual-purpose
- * as a software trap for userlevel programs.
- */
- .data
- .align 4
-
-in_trap_handler:
- .word 0
-
.text
- .align 4
-#if 0 /* kgdb is dropped from 2.5.33 */
-! This function is called when any SPARC trap (except window overflow or
-! underflow) occurs. It makes sure that the invalid register window is still
-! available before jumping into C code. It will also restore the world if you
-! return from handle_exception.
-
- .globl trap_low
-trap_low:
- rd %wim, %l3
- SAVE_ALL
-
- sethi %hi(in_trap_handler), %l4
- ld [%lo(in_trap_handler) + %l4], %l5
- inc %l5
- st %l5, [%lo(in_trap_handler) + %l4]
-
- /* Make sure kgdb sees the same state we just saved. */
- LOAD_PT_GLOBALS(sp)
- LOAD_PT_INS(sp)
- ld [%sp + STACKFRAME_SZ + PT_Y], %l4
- ld [%sp + STACKFRAME_SZ + PT_WIM], %l3
- ld [%sp + STACKFRAME_SZ + PT_PSR], %l0
- ld [%sp + STACKFRAME_SZ + PT_PC], %l1
- ld [%sp + STACKFRAME_SZ + PT_NPC], %l2
- rd %tbr, %l5 /* Never changes... */
-
- /* Make kgdb exception frame. */
- sub %sp,(16+1+6+1+72)*4,%sp ! Make room for input & locals
- ! + hidden arg + arg spill
- ! + doubleword alignment
- ! + registers[72] local var
- SAVE_KGDB_GLOBALS(sp)
- SAVE_KGDB_INS(sp)
- SAVE_KGDB_SREGS(sp, l4, l0, l3, l5, l1, l2)
-
- /* We are increasing PIL, so two writes. */
- or %l0, PSR_PIL, %l0
- wr %l0, 0, %psr
- WRITE_PAUSE
- wr %l0, PSR_ET, %psr
- WRITE_PAUSE
-
- call handle_exception
- add %sp, STACKFRAME_SZ, %o0 ! Pass address of registers
-
- /* Load new kgdb register set. */
- LOAD_KGDB_GLOBALS(sp)
- LOAD_KGDB_INS(sp)
- LOAD_KGDB_SREGS(sp, l4, l0, l3, l5, l1, l2)
- wr %l4, 0x0, %y
-
- sethi %hi(in_trap_handler), %l4
- ld [%lo(in_trap_handler) + %l4], %l5
- dec %l5
- st %l5, [%lo(in_trap_handler) + %l4]
-
- add %sp,(16+1+6+1+72)*4,%sp ! Undo the kgdb trap frame.
-
- /* Now take what kgdb did and place it into the pt_regs
- * frame which SparcLinux RESTORE_ALL understands.,
- */
- STORE_PT_INS(sp)
- STORE_PT_GLOBALS(sp)
- STORE_PT_YREG(sp, g2)
- STORE_PT_PRIV(sp, l0, l1, l2)
-
- RESTORE_ALL
+#ifdef CONFIG_KGDB
+ .align 4
+ .globl arch_kgdb_breakpoint
+ .type arch_kgdb_breakpoint,#function
+arch_kgdb_breakpoint:
+ ta 0x7d
+ retl
+ nop
+ .size arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
#endif
#if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_BLK_DEV_FD_MODULE)
- .text
.align 4
.globl floppy_hardint
floppy_hardint:
@@ -1596,6 +1524,23 @@ breakpoint_trap:
RESTORE_ALL
+#ifdef CONFIG_KGDB
+ .align 4
+ .globl kgdb_trap_low
+ .type kgdb_trap_low,#function
+kgdb_trap_low:
+ rd %wim,%l3
+ SAVE_ALL
+ wr %l0, PSR_ET, %psr
+ WRITE_PAUSE
+
+ call kgdb_trap
+ add %sp, STACKFRAME_SZ, %o0
+
+ RESTORE_ALL
+ .size kgdb_trap_low,.-kgdb_trap_low
+#endif
+
.align 4
.globl __handle_exception, flush_patch_exception
__handle_exception:
@@ -1698,4 +1643,22 @@ pcic_nmi_trap_patch:
#endif /* CONFIG_PCI */
+ .globl flushw_all
+flushw_all:
+ save %sp, -0x40, %sp
+ save %sp, -0x40, %sp
+ save %sp, -0x40, %sp
+ save %sp, -0x40, %sp
+ save %sp, -0x40, %sp
+ save %sp, -0x40, %sp
+ save %sp, -0x40, %sp
+ restore
+ restore
+ restore
+ restore
+ restore
+ restore
+ ret
+ restore
+
/* End of entry.S */
diff --git a/arch/sparc/kernel/head.S b/arch/sparc/kernel/head.S
index b7f1e81c8ff2..8bec05fa5795 100644
--- a/arch/sparc/kernel/head.S
+++ b/arch/sparc/kernel/head.S
@@ -191,7 +191,8 @@ t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xe
t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
-t_badfc:BAD_TRAP(0xfc) BAD_TRAP(0xfd)
+t_badfc:BAD_TRAP(0xfc)
+t_kgdb: KGDB_TRAP(0xfd)
dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */
dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */
@@ -267,7 +268,7 @@ trapbase_cpu1:
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
- BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
+ BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
trapbase_cpu2:
BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
@@ -335,7 +336,7 @@ trapbase_cpu2:
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
- BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
+ BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
trapbase_cpu3:
BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
@@ -403,7 +404,7 @@ trapbase_cpu3:
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
- BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
+ BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
#endif
.align PAGE_SIZE
diff --git a/arch/sparc/kernel/kgdb.c b/arch/sparc/kernel/kgdb.c
new file mode 100644
index 000000000000..757805ce02ee
--- /dev/null
+++ b/arch/sparc/kernel/kgdb.c
@@ -0,0 +1,164 @@
+/* kgdb.c: KGDB support for 32-bit sparc.
+ *
+ * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kgdb.h>
+#include <linux/kdebug.h>
+
+#include <asm/kdebug.h>
+#include <asm/ptrace.h>
+#include <asm/irq.h>
+
+extern unsigned long trapbase;
+
+void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+ struct reg_window *win;
+ int i;
+
+ gdb_regs[GDB_G0] = 0;
+ for (i = 0; i < 15; i++)
+ gdb_regs[GDB_G1 + i] = regs->u_regs[UREG_G1 + i];
+
+ win = (struct reg_window *) regs->u_regs[UREG_FP];
+ for (i = 0; i < 8; i++)
+ gdb_regs[GDB_L0 + i] = win->locals[i];
+ for (i = 0; i < 8; i++)
+ gdb_regs[GDB_I0 + i] = win->ins[i];
+
+ for (i = GDB_F0; i <= GDB_F31; i++)
+ gdb_regs[i] = 0;
+
+ gdb_regs[GDB_Y] = regs->y;
+ gdb_regs[GDB_PSR] = regs->psr;
+ gdb_regs[GDB_WIM] = 0;
+ gdb_regs[GDB_TBR] = (unsigned long) &trapbase;
+ gdb_regs[GDB_PC] = regs->pc;
+ gdb_regs[GDB_NPC] = regs->npc;
+ gdb_regs[GDB_FSR] = 0;
+ gdb_regs[GDB_CSR] = 0;
+}
+
+void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
+{
+ struct thread_info *t = task_thread_info(p);
+ struct reg_window *win;
+ int i;
+
+ for (i = GDB_G0; i < GDB_G6; i++)
+ gdb_regs[i] = 0;
+ gdb_regs[GDB_G6] = (unsigned long) t;
+ gdb_regs[GDB_G7] = 0;
+ for (i = GDB_O0; i < GDB_SP; i++)
+ gdb_regs[i] = 0;
+ gdb_regs[GDB_SP] = t->ksp;
+ gdb_regs[GDB_O7] = 0;
+
+ win = (struct reg_window *) t->ksp;
+ for (i = 0; i < 8; i++)
+ gdb_regs[GDB_L0 + i] = win->locals[i];
+ for (i = 0; i < 8; i++)
+ gdb_regs[GDB_I0 + i] = win->ins[i];
+
+ for (i = GDB_F0; i <= GDB_F31; i++)
+ gdb_regs[i] = 0;
+
+ gdb_regs[GDB_Y] = 0;
+
+ gdb_regs[GDB_PSR] = t->kpsr;
+ gdb_regs[GDB_WIM] = t->kwim;
+ gdb_regs[GDB_TBR] = (unsigned long) &trapbase;
+ gdb_regs[GDB_PC] = t->kpc;
+ gdb_regs[GDB_NPC] = t->kpc + 4;
+ gdb_regs[GDB_FSR] = 0;
+ gdb_regs[GDB_CSR] = 0;
+}
+
+void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+ struct reg_window *win;
+ int i;
+
+ for (i = 0; i < 15; i++)
+ regs->u_regs[UREG_G1 + i] = gdb_regs[GDB_G1 + i];
+
+ /* If the PSR register is changing, we have to preserve
+ * the CWP field, otherwise window save/restore explodes.
+ */
+ if (regs->psr != gdb_regs[GDB_PSR]) {
+ unsigned long cwp = regs->psr & PSR_CWP;
+
+ regs->psr = (gdb_regs[GDB_PSR] & ~PSR_CWP) | cwp;
+ }
+
+ regs->pc = gdb_regs[GDB_PC];
+ regs->npc = gdb_regs[GDB_NPC];
+ regs->y = gdb_regs[GDB_Y];
+
+ win = (struct reg_window *) regs->u_regs[UREG_FP];
+ for (i = 0; i < 8; i++)
+ win->locals[i] = gdb_regs[GDB_L0 + i];
+ for (i = 0; i < 8; i++)
+ win->ins[i] = gdb_regs[GDB_I0 + i];
+}
+
+int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
+ char *remcomInBuffer, char *remcomOutBuffer,
+ struct pt_regs *linux_regs)
+{
+ unsigned long addr;
+ char *ptr;
+
+ switch (remcomInBuffer[0]) {
+ case 'c':
+ /* try to read optional parameter, pc unchanged if no parm */
+ ptr = &remcomInBuffer[1];
+ if (kgdb_hex2long(&ptr, &addr)) {
+ linux_regs->pc = addr;
+ linux_regs->npc = addr + 4;
+ }
+ /* fallthru */
+
+ case 'D':
+ case 'k':
+ if (linux_regs->pc == (unsigned long) arch_kgdb_breakpoint) {
+ linux_regs->pc = linux_regs->npc;
+ linux_regs->npc += 4;
+ }
+ return 0;
+ }
+ return -1;
+}
+
+extern void do_hw_interrupt(struct pt_regs *regs, unsigned long type);
+
+asmlinkage void kgdb_trap(struct pt_regs *regs)
+{
+ unsigned long flags;
+
+ if (user_mode(regs)) {
+ do_hw_interrupt(regs, 0xfd);
+ return;
+ }
+
+ flushw_all();
+
+ local_irq_save(flags);
+ kgdb_handle_exception(0x172, SIGTRAP, 0, regs);
+ local_irq_restore(flags);
+}
+
+int kgdb_arch_init(void)
+{
+ return 0;
+}
+
+void kgdb_arch_exit(void)
+{
+}
+
+struct kgdb_arch arch_kgdb_ops = {
+ /* Breakpoint instruction: ta 0x7d */
+ .gdb_bpt_instr = { 0x91, 0xd0, 0x20, 0x7d },
+};
diff --git a/arch/sparc/kernel/sparc-stub.c b/arch/sparc/kernel/sparc-stub.c
deleted file mode 100644
index e84f815e6903..000000000000
--- a/arch/sparc/kernel/sparc-stub.c
+++ /dev/null
@@ -1,724 +0,0 @@
-/* $Id: sparc-stub.c,v 1.28 2001/10/30 04:54:21 davem Exp $
- * sparc-stub.c: KGDB support for the Linux kernel.
- *
- * Modifications to run under Linux
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- *
- * This file originally came from the gdb sources, and the
- * copyright notices have been retained below.
- */
-
-/****************************************************************************
-
- THIS SOFTWARE IS NOT COPYRIGHTED
-
- HP offers the following for use in the public domain. HP makes no
- warranty with regard to the software or its performance and the
- user accepts the software "AS IS" with all faults.
-
- HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD
- TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES
- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-
-****************************************************************************/
-
-/****************************************************************************
- * Header: remcom.c,v 1.34 91/03/09 12:29:49 glenne Exp $
- *
- * Module name: remcom.c $
- * Revision: 1.34 $
- * Date: 91/03/09 12:29:49 $
- * Contributor: Lake Stevens Instrument Division$
- *
- * Description: low level support for gdb debugger. $
- *
- * Considerations: only works on target hardware $
- *
- * Written by: Glenn Engel $
- * ModuleState: Experimental $
- *
- * NOTES: See Below $
- *
- * Modified for SPARC by Stu Grossman, Cygnus Support.
- *
- * This code has been extensively tested on the Fujitsu SPARClite demo board.
- *
- * To enable debugger support, two things need to happen. One, a
- * call to set_debug_traps() is necessary in order to allow any breakpoints
- * or error conditions to be properly intercepted and reported to gdb.
- * Two, a breakpoint needs to be generated to begin communication. This
- * is most easily accomplished by a call to breakpoint(). Breakpoint()
- * simulates a breakpoint by executing a trap #1.
- *
- *************
- *
- * The following gdb commands are supported:
- *
- * command function Return value
- *
- * g return the value of the CPU registers hex data or ENN
- * G set the value of the CPU registers OK or ENN
- *
- * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN
- * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN
- *
- * c Resume at current address SNN ( signal NN)
- * cAA..AA Continue at address AA..AA SNN
- *
- * s Step one instruction SNN
- * sAA..AA Step one instruction from AA..AA SNN
- *
- * k kill
- *
- * ? What was the last sigval ? SNN (signal NN)
- *
- * bBB..BB Set baud rate to BB..BB OK or BNN, then sets
- * baud rate
- *
- * All commands and responses are sent with a packet which includes a
- * checksum. A packet consists of
- *
- * $<packet info>#<checksum>.
- *
- * where
- * <packet info> :: <characters representing the command or response>
- * <checksum> :: < two hex digits computed as modulo 256 sum of <packetinfo>>
- *
- * When a packet is received, it is first acknowledged with either '+' or '-'.
- * '+' indicates a successful transfer. '-' indicates a failed transfer.
- *
- * Example:
- *
- * Host: Reply:
- * $m0,10#2a +$00010203040506070809101112131415#42
- *
- ****************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-
-#include <asm/system.h>
-#include <asm/signal.h>
-#include <asm/oplib.h>
-#include <asm/head.h>
-#include <asm/traps.h>
-#include <asm/vac-ops.h>
-#include <asm/kgdb.h>
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-#include <asm/cacheflush.h>
-
-/*
- *
- * external low-level support routines
- */
-
-extern void putDebugChar(char); /* write a single character */
-extern char getDebugChar(void); /* read and return a single char */
-
-/*
- * BUFMAX defines the maximum number of characters in inbound/outbound buffers
- * at least NUMREGBYTES*2 are needed for register packets
- */
-#define BUFMAX 2048
-
-static int initialized; /* !0 means we've been initialized */
-
-static const char hexchars[]="0123456789abcdef";
-
-#define NUMREGS 72
-
-/* Number of bytes of registers. */
-#define NUMREGBYTES (NUMREGS * 4)
-enum regnames {G0, G1, G2, G3, G4, G5, G6, G7,
- O0, O1, O2, O3, O4, O5, SP, O7,
- L0, L1, L2, L3, L4, L5, L6, L7,
- I0, I1, I2, I3, I4, I5, FP, I7,
-
- F0, F1, F2, F3, F4, F5, F6, F7,
- F8, F9, F10, F11, F12, F13, F14, F15,
- F16, F17, F18, F19, F20, F21, F22, F23,
- F24, F25, F26, F27, F28, F29, F30, F31,
- Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR };
-
-
-extern void trap_low(void); /* In arch/sparc/kernel/entry.S */
-
-unsigned long get_sun4cpte(unsigned long addr)
-{
- unsigned long entry;
-
- __asm__ __volatile__("\n\tlda [%1] %2, %0\n\t" :
- "=r" (entry) :
- "r" (addr), "i" (ASI_PTE));
- return entry;
-}
-
-unsigned long get_sun4csegmap(unsigned long addr)
-{
- unsigned long entry;
-
- __asm__ __volatile__("\n\tlduba [%1] %2, %0\n\t" :
- "=r" (entry) :
- "r" (addr), "i" (ASI_SEGMAP));
- return entry;
-}
-
-#if 0
-/* Have to sort this out. This cannot be done after initialization. */
-static void flush_cache_all_nop(void) {}
-#endif
-
-/* Place where we save old trap entries for restoration */
-struct tt_entry kgdb_savettable[256];
-typedef void (*trapfunc_t)(void);
-
-/* Helper routine for manipulation of kgdb_savettable */
-static inline void copy_ttentry(struct tt_entry *src, struct tt_entry *dest)
-{
- dest->inst_one = src->inst_one;
- dest->inst_two = src->inst_two;
- dest->inst_three = src->inst_three;
- dest->inst_four = src->inst_four;
-}
-
-/* Initialize the kgdb_savettable so that debugging can commence */
-static void eh_init(void)
-{
- int i;
-
- for(i=0; i < 256; i++)
- copy_ttentry(&sparc_ttable[i], &kgdb_savettable[i]);
-}
-
-/* Install an exception handler for kgdb */
-static void exceptionHandler(int tnum, trapfunc_t trap_entry)
-{
- unsigned long te_addr = (unsigned long) trap_entry;
-
- /* Make new vector */
- sparc_ttable[tnum].inst_one =
- SPARC_BRANCH((unsigned long) te_addr,
- (unsigned long) &sparc_ttable[tnum].inst_one);
- sparc_ttable[tnum].inst_two = SPARC_RD_PSR_L0;
- sparc_ttable[tnum].inst_three = SPARC_NOP;
- sparc_ttable[tnum].inst_four = SPARC_NOP;
-}
-
-/* Convert ch from a hex digit to an int */
-static int
-hex(unsigned char ch)
-{
- if (ch >= 'a' && ch <= 'f')
- return ch-'a'+10;
- if (ch >= '0' && ch <= '9')
- return ch-'0';
- if (ch >= 'A' && ch <= 'F')
- return ch-'A'+10;
- return -1;
-}
-
-/* scan for the sequence $<data>#<checksum> */
-static void
-getpacket(char *buffer)
-{
- unsigned char checksum;
- unsigned char xmitcsum;
- int i;
- int count;
- unsigned char ch;
-
- do {
- /* wait around for the start character, ignore all other characters */
- while ((ch = (getDebugChar() & 0x7f)) != '$') ;
-
- checksum = 0;
- xmitcsum = -1;
-
- count = 0;
-
- /* now, read until a # or end of buffer is found */
- while (count < BUFMAX) {
- ch = getDebugChar() & 0x7f;
- if (ch == '#')
- break;
- checksum = checksum + ch;
- buffer[count] = ch;
- count = count + 1;
- }
-
- if (count >= BUFMAX)
- continue;
-
- buffer[count] = 0;
-
- if (ch == '#') {
- xmitcsum = hex(getDebugChar() & 0x7f) << 4;
- xmitcsum |= hex(getDebugChar() & 0x7f);
- if (checksum != xmitcsum)
- putDebugChar('-'); /* failed checksum */
- else {
- putDebugChar('+'); /* successful transfer */
- /* if a sequence char is present, reply the ID */
- if (buffer[2] == ':') {
- putDebugChar(buffer[0]);
- putDebugChar(buffer[1]);
- /* remove sequence chars from buffer */
- count = strlen(buffer);
- for (i=3; i <= count; i++)
- buffer[i-3] = buffer[i];
- }
- }
- }
- } while (checksum != xmitcsum);
-}
-
-/* send the packet in buffer. */
-
-static void
-putpacket(unsigned char *buffer)
-{
- unsigned char checksum;
- int count;
- unsigned char ch, recv;
-
- /* $<packet info>#<checksum>. */
- do {
- putDebugChar('$');
- checksum = 0;
- count = 0;
-
- while ((ch = buffer[count])) {
- putDebugChar(ch);
- checksum += ch;
- count += 1;
- }
-
- putDebugChar('#');
- putDebugChar(hexchars[checksum >> 4]);
- putDebugChar(hexchars[checksum & 0xf]);
- recv = getDebugChar();
- } while ((recv & 0x7f) != '+');
-}
-
-static char remcomInBuffer[BUFMAX];
-static char remcomOutBuffer[BUFMAX];
-
-/* Convert the memory pointed to by mem into hex, placing result in buf.
- * Return a pointer to the last char put in buf (null), in case of mem fault,
- * return 0.
- */
-
-static unsigned char *
-mem2hex(char *mem, char *buf, int count)
-{
- unsigned char ch;
-
- while (count-- > 0) {
- /* This assembler code is basically: ch = *mem++;
- * except that we use the SPARC/Linux exception table
- * mechanism (see how "fixup" works in kernel_mna_trap_fault)
- * to arrange for a "return 0" upon a memory fault
- */
- __asm__(
- "\n1:\n\t"
- "ldub [%0], %1\n\t"
- "inc %0\n\t"
- ".section .fixup,#alloc,#execinstr\n\t"
- ".align 4\n"
- "2:\n\t"
- "retl\n\t"
- " mov 0, %%o0\n\t"
- ".section __ex_table, #alloc\n\t"
- ".align 4\n\t"
- ".word 1b, 2b\n\t"
- ".text\n"
- : "=r" (mem), "=r" (ch) : "0" (mem));
- *buf++ = hexchars[ch >> 4];
- *buf++ = hexchars[ch & 0xf];
- }
-
- *buf = 0;
- return buf;
-}
-
-/* convert the hex array pointed to by buf into binary to be placed in mem
- * return a pointer to the character AFTER the last byte written.
-*/
-static char *
-hex2mem(char *buf, char *mem, int count)
-{
- int i;
- unsigned char ch;
-
- for (i=0; i<count; i++) {
-
- ch = hex(*buf++) << 4;
- ch |= hex(*buf++);
- /* Assembler code is *mem++ = ch; with return 0 on fault */
- __asm__(
- "\n1:\n\t"
- "stb %1, [%0]\n\t"
- "inc %0\n\t"
- ".section .fixup,#alloc,#execinstr\n\t"
- ".align 4\n"
- "2:\n\t"
- "retl\n\t"
- " mov 0, %%o0\n\t"
- ".section __ex_table, #alloc\n\t"
- ".align 4\n\t"
- ".word 1b, 2b\n\t"
- ".text\n"
- : "=r" (mem) : "r" (ch) , "0" (mem));
- }
- return mem;
-}
-
-/* This table contains the mapping between SPARC hardware trap types, and
- signals, which are primarily what GDB understands. It also indicates
- which hardware traps we need to commandeer when initializing the stub. */
-
-static struct hard_trap_info
-{
- unsigned char tt; /* Trap type code for SPARC */
- unsigned char signo; /* Signal that we map this trap into */
-} hard_trap_info[] = {
- {SP_TRAP_SBPT, SIGTRAP}, /* ta 1 - Linux/KGDB software breakpoint */
- {0, 0} /* Must be last */
-};
-
-/* Set up exception handlers for tracing and breakpoints */
-
-void
-set_debug_traps(void)
-{
- struct hard_trap_info *ht;
- unsigned long flags;
-
- local_irq_save(flags);
-#if 0
-/* Have to sort this out. This cannot be done after initialization. */
- BTFIXUPSET_CALL(flush_cache_all, flush_cache_all_nop, BTFIXUPCALL_NOP);
-#endif
-
- /* Initialize our copy of the Linux Sparc trap table */
- eh_init();
-
- for (ht = hard_trap_info; ht->tt && ht->signo; ht++) {
- /* Only if it doesn't destroy our fault handlers */
- if((ht->tt != SP_TRAP_TFLT) &&
- (ht->tt != SP_TRAP_DFLT))
- exceptionHandler(ht->tt, trap_low);
- }
-
- /* In case GDB is started before us, ack any packets (presumably
- * "$?#xx") sitting there.
- *
- * I've found this code causes more problems than it solves,
- * so that's why it's commented out. GDB seems to work fine
- * now starting either before or after the kernel -bwb
- */
-#if 0
- while((c = getDebugChar()) != '$');
- while((c = getDebugChar()) != '#');
- c = getDebugChar(); /* eat first csum byte */
- c = getDebugChar(); /* eat second csum byte */
- putDebugChar('+'); /* ack it */
-#endif
-
- initialized = 1; /* connect! */
- local_irq_restore(flags);
-}
-
-/* Convert the SPARC hardware trap type code to a unix signal number. */
-
-static int
-computeSignal(int tt)
-{
- struct hard_trap_info *ht;
-
- for (ht = hard_trap_info; ht->tt && ht->signo; ht++)
- if (ht->tt == tt)
- return ht->signo;
-
- return SIGHUP; /* default for things we don't know about */
-}
-
-/*
- * While we find nice hex chars, build an int.
- * Return number of chars processed.
- */
-
-static int
-hexToInt(char **ptr, int *intValue)
-{
- int numChars = 0;
- int hexValue;
-
- *intValue = 0;
-
- while (**ptr) {
- hexValue = hex(**ptr);
- if (hexValue < 0)
- break;
-
- *intValue = (*intValue << 4) | hexValue;
- numChars ++;
-
- (*ptr)++;
- }
-
- return (numChars);
-}
-
-/*
- * This function does all command processing for interfacing to gdb. It
- * returns 1 if you should skip the instruction at the trap address, 0
- * otherwise.
- */
-
-extern void breakinst(void);
-
-void
-handle_exception (unsigned long *registers)
-{
- int tt; /* Trap type */
- int sigval;
- int addr;
- int length;
- char *ptr;
- unsigned long *sp;
-
- /* First, we must force all of the windows to be spilled out */
-
- asm("save %sp, -64, %sp\n\t"
- "save %sp, -64, %sp\n\t"
- "save %sp, -64, %sp\n\t"
- "save %sp, -64, %sp\n\t"
- "save %sp, -64, %sp\n\t"
- "save %sp, -64, %sp\n\t"
- "save %sp, -64, %sp\n\t"
- "save %sp, -64, %sp\n\t"
- "restore\n\t"
- "restore\n\t"
- "restore\n\t"
- "restore\n\t"
- "restore\n\t"
- "restore\n\t"
- "restore\n\t"
- "restore\n\t");
-
- lock_kernel();
- if (registers[PC] == (unsigned long)breakinst) {
- /* Skip over breakpoint trap insn */
- registers[PC] = registers[NPC];
- registers[NPC] += 4;
- }
-
- sp = (unsigned long *)registers[SP];
-
- tt = (registers[TBR] >> 4) & 0xff;
-
- /* reply to host that an exception has occurred */
- sigval = computeSignal(tt);
- ptr = remcomOutBuffer;
-
- *ptr++ = 'T';
- *ptr++ = hexchars[sigval >> 4];
- *ptr++ = hexchars[sigval & 0xf];
-
- *ptr++ = hexchars[PC >> 4];
- *ptr++ = hexchars[PC & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *)&registers[PC], ptr, 4);
- *ptr++ = ';';
-
- *ptr++ = hexchars[FP >> 4];
- *ptr++ = hexchars[FP & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *) (sp + 8 + 6), ptr, 4); /* FP */
- *ptr++ = ';';
-
- *ptr++ = hexchars[SP >> 4];
- *ptr++ = hexchars[SP & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *)&sp, ptr, 4);
- *ptr++ = ';';
-
- *ptr++ = hexchars[NPC >> 4];
- *ptr++ = hexchars[NPC & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *)&registers[NPC], ptr, 4);
- *ptr++ = ';';
-
- *ptr++ = hexchars[O7 >> 4];
- *ptr++ = hexchars[O7 & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *)&registers[O7], ptr, 4);
- *ptr++ = ';';
-
- *ptr++ = 0;
-
- putpacket(remcomOutBuffer);
-
- /* XXX We may want to add some features dealing with poking the
- * XXX page tables, the real ones on the srmmu, and what is currently
- * XXX loaded in the sun4/sun4c tlb at this point in time. But this
- * XXX also required hacking to the gdb sources directly...
- */
-
- while (1) {
- remcomOutBuffer[0] = 0;
-
- getpacket(remcomInBuffer);
- switch (remcomInBuffer[0]) {
- case '?':
- remcomOutBuffer[0] = 'S';
- remcomOutBuffer[1] = hexchars[sigval >> 4];
- remcomOutBuffer[2] = hexchars[sigval & 0xf];
- remcomOutBuffer[3] = 0;
- break;
-
- case 'd':
- /* toggle debug flag */
- break;
-
- case 'g': /* return the value of the CPU registers */
- {
- ptr = remcomOutBuffer;
- /* G & O regs */
- ptr = mem2hex((char *)registers, ptr, 16 * 4);
- /* L & I regs */
- ptr = mem2hex((char *) (sp + 0), ptr, 16 * 4);
- /* Floating point */
- memset(ptr, '0', 32 * 8);
- /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
- mem2hex((char *)&registers[Y], (ptr + 32 * 4 * 2), (8 * 4));
- }
- break;
-
- case 'G': /* set the value of the CPU registers - return OK */
- {
- unsigned long *newsp, psr;
-
- psr = registers[PSR];
-
- ptr = &remcomInBuffer[1];
- /* G & O regs */
- hex2mem(ptr, (char *)registers, 16 * 4);
- /* L & I regs */
- hex2mem(ptr + 16 * 4 * 2, (char *) (sp + 0), 16 * 4);
- /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
- hex2mem(ptr + 64 * 4 * 2, (char *)&registers[Y], 8 * 4);
-
- /* See if the stack pointer has moved. If so,
- * then copy the saved locals and ins to the
- * new location. This keeps the window
- * overflow and underflow routines happy.
- */
-
- newsp = (unsigned long *)registers[SP];
- if (sp != newsp)
- sp = memcpy(newsp, sp, 16 * 4);
-
- /* Don't allow CWP to be modified. */
-
- if (psr != registers[PSR])
- registers[PSR] = (psr & 0x1f) | (registers[PSR] & ~0x1f);
-
- strcpy(remcomOutBuffer,"OK");
- }
- break;
-
- case 'm': /* mAA..AA,LLLL Read LLLL bytes at address AA..AA */
- /* Try to read %x,%x. */
-
- ptr = &remcomInBuffer[1];
-
- if (hexToInt(&ptr, &addr)
- && *ptr++ == ','
- && hexToInt(&ptr, &length)) {
- if (mem2hex((char *)addr, remcomOutBuffer, length))
- break;
-
- strcpy (remcomOutBuffer, "E03");
- } else {
- strcpy(remcomOutBuffer,"E01");
- }
- break;
-
- case 'M': /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */
- /* Try to read '%x,%x:'. */
-
- ptr = &remcomInBuffer[1];
-
- if (hexToInt(&ptr, &addr)
- && *ptr++ == ','
- && hexToInt(&ptr, &length)
- && *ptr++ == ':') {
- if (hex2mem(ptr, (char *)addr, length)) {
- strcpy(remcomOutBuffer, "OK");
- } else {
- strcpy(remcomOutBuffer, "E03");
- }
- } else {
- strcpy(remcomOutBuffer, "E02");
- }
- break;
-
- case 'c': /* cAA..AA Continue at address AA..AA(optional) */
- /* try to read optional parameter, pc unchanged if no parm */
-
- ptr = &remcomInBuffer[1];
- if (hexToInt(&ptr, &addr)) {
- registers[PC] = addr;
- registers[NPC] = addr + 4;
- }
-
-/* Need to flush the instruction cache here, as we may have deposited a
- * breakpoint, and the icache probably has no way of knowing that a data ref to
- * some location may have changed something that is in the instruction cache.
- */
- flush_cache_all();
- unlock_kernel();
- return;
-
- /* kill the program */
- case 'k' : /* do nothing */
- break;
- case 'r': /* Reset */
- asm ("call 0\n\t"
- "nop\n\t");
- break;
- } /* switch */
-
- /* reply to the request */
- putpacket(remcomOutBuffer);
- } /* while(1) */
-}
-
-/* This function will generate a breakpoint exception. It is used at the
- beginning of a program to sync up with a debugger and can be used
- otherwise as a quick means to stop program execution and "break" into
- the debugger. */
-
-void
-breakpoint(void)
-{
- if (!initialized)
- return;
-
- /* Again, watch those c-prefixes for ELF kernels */
-#if defined(__svr4__) || defined(__ELF__)
- asm(".globl breakinst\n"
- "breakinst:\n\t"
- "ta 1\n");
-#else
- asm(".globl _breakinst\n"
- "_breakinst:\n\t"
- "ta 1\n");
-#endif
-}
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index edbe71e3fab9..eb36f3b746b8 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -13,6 +13,7 @@ config SPARC64
default y
select HAVE_IDE
select HAVE_LMB
+ select HAVE_ARCH_KGDB
config GENERIC_TIME
bool
diff --git a/arch/sparc64/kernel/Makefile b/arch/sparc64/kernel/Makefile
index 2bd0340b743d..ec4f5ebb1ca6 100644
--- a/arch/sparc64/kernel/Makefile
+++ b/arch/sparc64/kernel/Makefile
@@ -29,3 +29,4 @@ obj-$(CONFIG_SUN_LDOMS) += ldc.o vio.o viohs.o ds.o
obj-$(CONFIG_AUDIT) += audit.o
obj-$(CONFIG_AUDIT)$(CONFIG_COMPAT) += compat_audit.o
obj-y += $(obj-yy)
+obj-$(CONFIG_KGDB) += kgdb.o
diff --git a/arch/sparc64/kernel/kgdb.c b/arch/sparc64/kernel/kgdb.c
new file mode 100644
index 000000000000..fefbe6dc51be
--- /dev/null
+++ b/arch/sparc64/kernel/kgdb.c
@@ -0,0 +1,186 @@
+/* kgdb.c: KGDB support for 64-bit sparc.
+ *
+ * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kgdb.h>
+#include <linux/kdebug.h>
+
+#include <asm/kdebug.h>
+#include <asm/ptrace.h>
+#include <asm/irq.h>
+
+void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+ struct reg_window *win;
+ int i;
+
+ gdb_regs[GDB_G0] = 0;
+ for (i = 0; i < 15; i++)
+ gdb_regs[GDB_G1 + i] = regs->u_regs[UREG_G1 + i];
+
+ win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
+ for (i = 0; i < 8; i++)
+ gdb_regs[GDB_L0 + i] = win->locals[i];
+ for (i = 0; i < 8; i++)
+ gdb_regs[GDB_I0 + i] = win->ins[i];
+
+ for (i = GDB_F0; i <= GDB_F62; i++)
+ gdb_regs[i] = 0;
+
+ gdb_regs[GDB_PC] = regs->tpc;
+ gdb_regs[GDB_NPC] = regs->tnpc;
+ gdb_regs[GDB_STATE] = regs->tstate;
+ gdb_regs[GDB_FSR] = 0;
+ gdb_regs[GDB_FPRS] = 0;
+ gdb_regs[GDB_Y] = regs->y;
+}
+
+void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
+{
+ struct thread_info *t = task_thread_info(p);
+ extern unsigned int switch_to_pc;
+ extern unsigned int ret_from_syscall;
+ struct reg_window *win;
+ unsigned long pc, cwp;
+ int i;
+
+ for (i = GDB_G0; i < GDB_G6; i++)
+ gdb_regs[i] = 0;
+ gdb_regs[GDB_G6] = (unsigned long) t;
+ gdb_regs[GDB_G7] = (unsigned long) p;
+ for (i = GDB_O0; i < GDB_SP; i++)
+ gdb_regs[i] = 0;
+ gdb_regs[GDB_SP] = t->ksp;
+ gdb_regs[GDB_O7] = 0;
+
+ win = (struct reg_window *) (t->ksp + STACK_BIAS);
+ for (i = 0; i < 8; i++)
+ gdb_regs[GDB_L0 + i] = win->locals[i];
+ for (i = 0; i < 8; i++)
+ gdb_regs[GDB_I0 + i] = win->ins[i];
+
+ for (i = GDB_F0; i <= GDB_F62; i++)
+ gdb_regs[i] = 0;
+
+ if (t->new_child)
+ pc = (unsigned long) &ret_from_syscall;
+ else
+ pc = (unsigned long) &switch_to_pc;
+
+ gdb_regs[GDB_PC] = pc;
+ gdb_regs[GDB_NPC] = pc + 4;
+
+ cwp = __thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP];
+
+ gdb_regs[GDB_STATE] = (TSTATE_PRIV | TSTATE_IE | cwp);
+ gdb_regs[GDB_FSR] = 0;
+ gdb_regs[GDB_FPRS] = 0;
+ gdb_regs[GDB_Y] = 0;
+}
+
+void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+ struct reg_window *win;
+ int i;
+
+ for (i = 0; i < 15; i++)
+ regs->u_regs[UREG_G1 + i] = gdb_regs[GDB_G1 + i];
+
+ /* If the TSTATE register is changing, we have to preserve
+ * the CWP field, otherwise window save/restore explodes.
+ */
+ if (regs->tstate != gdb_regs[GDB_STATE]) {
+ unsigned long cwp = regs->tstate & TSTATE_CWP;
+
+ regs->tstate = (gdb_regs[GDB_STATE] & ~TSTATE_CWP) | cwp;
+ }
+
+ regs->tpc = gdb_regs[GDB_PC];
+ regs->tnpc = gdb_regs[GDB_NPC];
+ regs->y = gdb_regs[GDB_Y];
+
+ win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
+ for (i = 0; i < 8; i++)
+ win->locals[i] = gdb_regs[GDB_L0 + i];
+ for (i = 0; i < 8; i++)
+ win->ins[i] = gdb_regs[GDB_I0 + i];
+}
+
+#ifdef CONFIG_SMP
+void smp_kgdb_capture_client(struct pt_regs *regs)
+{
+ unsigned long flags;
+
+ __asm__ __volatile__("rdpr %%pstate, %0\n\t"
+ "wrpr %0, %1, %%pstate"
+ : "=r" (flags)
+ : "i" (PSTATE_IE));
+
+ flushw_all();
+
+ if (atomic_read(&kgdb_active) != -1)
+ kgdb_nmicallback(raw_smp_processor_id(), regs);
+
+ __asm__ __volatile__("wrpr %0, 0, %%pstate"
+ : : "r" (flags));
+}
+#endif
+
+int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
+ char *remcomInBuffer, char *remcomOutBuffer,
+ struct pt_regs *linux_regs)
+{
+ unsigned long addr;
+ char *ptr;
+
+ switch (remcomInBuffer[0]) {
+ case 'c':
+ /* try to read optional parameter, pc unchanged if no parm */
+ ptr = &remcomInBuffer[1];
+ if (kgdb_hex2long(&ptr, &addr)) {
+ linux_regs->tpc = addr;
+ linux_regs->tnpc = addr + 4;
+ }
+ /* fallthru */
+
+ case 'D':
+ case 'k':
+ if (linux_regs->tpc == (unsigned long) arch_kgdb_breakpoint) {
+ linux_regs->tpc = linux_regs->tnpc;
+ linux_regs->tnpc += 4;
+ }
+ return 0;
+ }
+ return -1;
+}
+
+asmlinkage void kgdb_trap(unsigned long trap_level, struct pt_regs *regs)
+{
+ unsigned long flags;
+
+ if (user_mode(regs)) {
+ bad_trap(regs, trap_level);
+ return;
+ }
+
+ flushw_all();
+
+ local_irq_save(flags);
+ kgdb_handle_exception(0x172, SIGTRAP, 0, regs);
+ local_irq_restore(flags);
+}
+
+int kgdb_arch_init(void)
+{
+ return 0;
+}
+
+void kgdb_arch_exit(void)
+{
+}
+
+struct kgdb_arch arch_kgdb_ops = {
+ /* Breakpoint instruction: ta 0x72 */
+ .gdb_bpt_instr = { 0x91, 0xd0, 0x20, 0x72 },
+};
diff --git a/arch/sparc64/kernel/misctrap.S b/arch/sparc64/kernel/misctrap.S
index b257497ddde1..753b4f031bfb 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
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 409dd71f2738..8face0c49fef 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -910,6 +910,9 @@ extern unsigned long xcall_flush_tlb_kernel_range;
extern unsigned long xcall_report_regs;
extern unsigned long xcall_receive_signal;
extern unsigned long xcall_new_mmu_context_version;
+#ifdef CONFIG_KGDB
+extern unsigned long xcall_kgdb_capture;
+#endif
#ifdef DCACHE_ALIASING_POSSIBLE
extern unsigned long xcall_flush_dcache_page_cheetah;
@@ -1079,6 +1082,13 @@ void smp_new_mmu_context_version(void)
smp_cross_call(&xcall_new_mmu_context_version, 0, 0, 0);
}
+#ifdef CONFIG_KGDB
+void kgdb_roundup_cpus(unsigned long flags)
+{
+ smp_cross_call(&xcall_kgdb_capture, 0, 0, 0);
+}
+#endif
+
void smp_report_regs(void)
{
smp_cross_call(&xcall_report_regs, 0, 0, 0);
diff --git a/arch/sparc64/kernel/ttable.S b/arch/sparc64/kernel/ttable.S
index b0de4c00b11a..450053af039e 100644
--- a/arch/sparc64/kernel/ttable.S
+++ b/arch/sparc64/kernel/ttable.S
@@ -153,7 +153,7 @@ tl0_resv164: BTRAP(0x164) BTRAP(0x165) BTRAP(0x166) BTRAP(0x167) BTRAP(0x168)
tl0_resv169: BTRAP(0x169) BTRAP(0x16a) BTRAP(0x16b) BTRAP(0x16c)
tl0_linux64: LINUX_64BIT_SYSCALL_TRAP
tl0_gsctx: TRAP(sparc64_get_context) TRAP(sparc64_set_context)
-tl0_resv170: KPROBES_TRAP(0x170) KPROBES_TRAP(0x171) BTRAP(0x172)
+tl0_resv170: KPROBES_TRAP(0x170) KPROBES_TRAP(0x171) KGDB_TRAP(0x172)
tl0_resv173: BTRAP(0x173) BTRAP(0x174) BTRAP(0x175) BTRAP(0x176) BTRAP(0x177)
tl0_resv178: BTRAP(0x178) BTRAP(0x179) BTRAP(0x17a) BTRAP(0x17b) BTRAP(0x17c)
tl0_resv17d: BTRAP(0x17d) BTRAP(0x17e) BTRAP(0x17f)
diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S
index e686a67561af..796e005dad8b 100644
--- a/arch/sparc64/mm/ultra.S
+++ b/arch/sparc64/mm/ultra.S
@@ -676,6 +676,33 @@ xcall_new_mmu_context_version:
wr %g0, (1 << PIL_SMP_CTX_NEW_VERSION), %set_softint
retry
+#ifdef CONFIG_KGDB
+ .globl xcall_kgdb_capture
+xcall_kgdb_capture:
+661: rdpr %pstate, %g2
+ wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate
+ .section .sun4v_2insn_patch, "ax"
+ .word 661b
+ nop
+ nop
+ .previous
+
+ rdpr %pil, %g2
+ wrpr %g0, 15, %pil
+ sethi %hi(109f), %g7
+ ba,pt %xcc, etrap_irq
+109: or %g7, %lo(109b), %g7
+#ifdef CONFIG_TRACE_IRQFLAGS
+ call trace_hardirqs_off
+ nop
+#endif
+ call smp_kgdb_capture_client
+ add %sp, PTREGS_OFF, %o0
+ /* Has to be a non-v9 branch due to the large distance. */
+ ba rtrap_xcall
+ ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
+#endif
+
#endif /* CONFIG_SMP */
diff --git a/include/asm-sparc/head.h b/include/asm-sparc/head.h
index fcdba5116339..e6532c3e09c9 100644
--- a/include/asm-sparc/head.h
+++ b/include/asm-sparc/head.h
@@ -52,6 +52,17 @@
nop; \
nop;
+#ifdef CONFIG_KGDB
+#define KGDB_TRAP(num) \
+ b kgdb_trap_low; \
+ rd %psr,%l0; \
+ nop; \
+ nop;
+#else
+#define KGDB_TRAP(num) \
+ BAD_TRAP(num)
+#endif
+
/* The Get Condition Codes software trap for userland. */
#define GETCC_TRAP \
b getcc_trap_handler; mov %psr, %l0; nop; nop;
diff --git a/include/asm-sparc/kgdb.h b/include/asm-sparc/kgdb.h
index d120adfb429f..b6ef301d05bf 100644
--- a/include/asm-sparc/kgdb.h
+++ b/include/asm-sparc/kgdb.h
@@ -1,94 +1,38 @@
-/* $Id: kgdb.h,v 1.8 1998/01/07 06:33:44 baccala Exp $
- * kgdb.h: Defines and declarations for serial line source level
- * remote debugging of the Linux kernel using gdb.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
#ifndef _SPARC_KGDB_H
#define _SPARC_KGDB_H
-#ifndef __ASSEMBLY__
-/* To init the kgdb engine. */
-extern void set_debug_traps(void);
-
-/* To enter the debugger explicitly. */
-extern void breakpoint(void);
-
-/* For convenience we define the format of a kgdb trap breakpoint
- * frame here also.
- */
-struct kgdb_frame {
- unsigned long globals[8];
- unsigned long outs[8];
- unsigned long locals[8];
- unsigned long ins[8];
- unsigned long fpregs[32];
- unsigned long y;
- unsigned long psr;
- unsigned long wim;
- unsigned long tbr;
- unsigned long pc;
- unsigned long npc;
- unsigned long fpsr;
- unsigned long cpsr;
+#ifdef CONFIG_SPARC32
+#define BUFMAX 2048
+#else
+#define BUFMAX 4096
+#endif
+
+enum regnames {
+ GDB_G0, GDB_G1, GDB_G2, GDB_G3, GDB_G4, GDB_G5, GDB_G6, GDB_G7,
+ GDB_O0, GDB_O1, GDB_O2, GDB_O3, GDB_O4, GDB_O5, GDB_SP, GDB_O7,
+ GDB_L0, GDB_L1, GDB_L2, GDB_L3, GDB_L4, GDB_L5, GDB_L6, GDB_L7,
+ GDB_I0, GDB_I1, GDB_I2, GDB_I3, GDB_I4, GDB_I5, GDB_FP, GDB_I7,
+ GDB_F0,
+ GDB_F31 = GDB_F0 + 31,
+#ifdef CONFIG_SPARC32
+ GDB_Y, GDB_PSR, GDB_WIM, GDB_TBR, GDB_PC, GDB_NPC,
+ GDB_FSR, GDB_CSR,
+#else
+ GDB_F32 = GDB_F0 + 32,
+ GDB_F62 = GDB_F32 + 15,
+ GDB_PC, GDB_NPC, GDB_STATE, GDB_FSR, GDB_FPRS, GDB_Y,
+#endif
};
-#endif /* !(__ASSEMBLY__) */
-
-/* Macros for assembly usage of the kgdb breakpoint frame. */
-#define KGDB_G0 0x000
-#define KGDB_G1 0x004
-#define KGDB_G2 0x008
-#define KGDB_G4 0x010
-#define KGDB_G6 0x018
-#define KGDB_I0 0x020
-#define KGDB_I2 0x028
-#define KGDB_I4 0x030
-#define KGDB_I6 0x038
-#define KGDB_Y 0x100
-#define KGDB_PSR 0x104
-#define KGDB_WIM 0x108
-#define KGDB_TBR 0x10c
-#define KGDB_PC 0x110
-#define KGDB_NPC 0x114
-
-#define SAVE_KGDB_GLOBALS(reg) \
- std %g0, [%reg + STACKFRAME_SZ + KGDB_G0]; \
- std %g2, [%reg + STACKFRAME_SZ + KGDB_G2]; \
- std %g4, [%reg + STACKFRAME_SZ + KGDB_G4]; \
- std %g6, [%reg + STACKFRAME_SZ + KGDB_G6];
-
-#define SAVE_KGDB_INS(reg) \
- std %i0, [%reg + STACKFRAME_SZ + KGDB_I0]; \
- std %i2, [%reg + STACKFRAME_SZ + KGDB_I2]; \
- std %i4, [%reg + STACKFRAME_SZ + KGDB_I4]; \
- std %i6, [%reg + STACKFRAME_SZ + KGDB_I6];
-
-#define SAVE_KGDB_SREGS(reg, reg_y, reg_psr, reg_wim, reg_tbr, reg_pc, reg_npc) \
- st %reg_y, [%reg + STACKFRAME_SZ + KGDB_Y]; \
- st %reg_psr, [%reg + STACKFRAME_SZ + KGDB_PSR]; \
- st %reg_wim, [%reg + STACKFRAME_SZ + KGDB_WIM]; \
- st %reg_tbr, [%reg + STACKFRAME_SZ + KGDB_TBR]; \
- st %reg_pc, [%reg + STACKFRAME_SZ + KGDB_PC]; \
- st %reg_npc, [%reg + STACKFRAME_SZ + KGDB_NPC];
-#define LOAD_KGDB_GLOBALS(reg) \
- ld [%reg + STACKFRAME_SZ + KGDB_G1], %g1; \
- ldd [%reg + STACKFRAME_SZ + KGDB_G2], %g2; \
- ldd [%reg + STACKFRAME_SZ + KGDB_G4], %g4; \
- ldd [%reg + STACKFRAME_SZ + KGDB_G6], %g6;
+#ifdef CONFIG_SPARC32
+#define NUMREGBYTES ((GDB_CSR + 1) * 4)
+#else
+#define NUMREGBYTES ((GDB_Y + 1) * 8)
+#endif
-#define LOAD_KGDB_INS(reg) \
- ldd [%reg + STACKFRAME_SZ + KGDB_I0], %i0; \
- ldd [%reg + STACKFRAME_SZ + KGDB_I2], %i2; \
- ldd [%reg + STACKFRAME_SZ + KGDB_I4], %i4; \
- ldd [%reg + STACKFRAME_SZ + KGDB_I6], %i6;
+extern void arch_kgdb_breakpoint(void);
-#define LOAD_KGDB_SREGS(reg, reg_y, reg_psr, reg_wim, reg_tbr, reg_pc, reg_npc) \
- ld [%reg + STACKFRAME_SZ + KGDB_Y], %reg_y; \
- ld [%reg + STACKFRAME_SZ + KGDB_PSR], %reg_psr; \
- ld [%reg + STACKFRAME_SZ + KGDB_WIM], %reg_wim; \
- ld [%reg + STACKFRAME_SZ + KGDB_TBR], %reg_tbr; \
- ld [%reg + STACKFRAME_SZ + KGDB_PC], %reg_pc; \
- ld [%reg + STACKFRAME_SZ + KGDB_NPC], %reg_npc;
+#define BREAK_INSTR_SIZE 4
+#define CACHE_FLUSH_IS_SAFE 1
-#endif /* !(_SPARC_KGDB_H) */
+#endif /* _SPARC_KGDB_H */
diff --git a/include/asm-sparc/system.h b/include/asm-sparc/system.h
index 4e08210cd4c2..b4b024445fc9 100644
--- a/include/asm-sparc/system.h
+++ b/include/asm-sparc/system.h
@@ -94,6 +94,8 @@ extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
} while(0)
#endif
+extern void flushw_all(void);
+
/*
* Flush windows so that the VM switch which follows
* would not pull the stack from under us.
diff --git a/include/asm-sparc64/kgdb.h b/include/asm-sparc64/kgdb.h
new file mode 100644
index 000000000000..aa6532fd3a13
--- /dev/null
+++ b/include/asm-sparc64/kgdb.h
@@ -0,0 +1 @@
+#include <asm-sparc/kgdb.h>
diff --git a/include/asm-sparc64/system.h b/include/asm-sparc64/system.h
index 53eae091a171..6897ac31be41 100644
--- a/include/asm-sparc64/system.h
+++ b/include/asm-sparc64/system.h
@@ -180,12 +180,13 @@ do { if (test_thread_flag(TIF_PERFCTR)) { \
"ldx [%%sp + 2047 + 0x70], %%i6\n\t" \
"ldx [%%sp + 2047 + 0x78], %%i7\n\t" \
"ldx [%%g6 + %9], %%g4\n\t" \
- "brz,pt %%o7, 1f\n\t" \
+ "brz,pt %%o7, switch_to_pc\n\t" \
" mov %%g7, %0\n\t" \
"sethi %%hi(ret_from_syscall), %%g1\n\t" \
"jmpl %%g1 + %%lo(ret_from_syscall), %%g0\n\t" \
" nop\n\t" \
- "1:\n\t" \
+ ".globl switch_to_pc\n\t" \
+ "switch_to_pc:\n\t" \
: "=&r" (last), "=r" (current), "=r" (current_thread_info_reg), \
"=r" (__local_per_cpu_offset) \
: "0" (task_thread_info(next)), \
diff --git a/include/asm-sparc64/ttable.h b/include/asm-sparc64/ttable.h
index d3cc4eff39a6..1b55538b944f 100644
--- a/include/asm-sparc64/ttable.h
+++ b/include/asm-sparc64/ttable.h
@@ -175,6 +175,12 @@
#define KPROBES_TRAP(lvl) TRAP_ARG(bad_trap, lvl)
#endif
+#ifdef CONFIG_KGDB
+#define KGDB_TRAP(lvl) TRAP_IRQ(kgdb_trap, lvl)
+#else
+#define KGDB_TRAP(lvl) TRAP_ARG(bad_trap, lvl)
+#endif
+
#define SUN4V_ITSB_MISS \
ldxa [%g0] ASI_SCRATCHPAD, %g2; \
ldx [%g2 + HV_FAULT_I_ADDR_OFFSET], %g4; \
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