Blackfin: add support for kgdb

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 160 insertions, 0 deletions

diff --git a/lib_blackfin/kgdb.h b/lib_blackfin/kgdb.h
new file mode 100644
index 0000000..18f1f49
--- /dev/null
+++ b/lib_blackfin/kgdb.h
@@ -0,0 +1,160 @@
+/* Blackfin KGDB header
+ *
+ * Copyright 2005-2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ASM_BLACKFIN_KGDB_H__
+#define __ASM_BLACKFIN_KGDB_H__
+
+/* gdb locks */
+#define KGDB_MAX_NO_CPUS 8
+
+/*
+ * BUFMAX defines the maximum number of characters in inbound/outbound buffers.
+ * At least NUMREGBYTES*2 are needed for register packets.
+ * Longer buffer is needed to list all threads.
+ */
+#define BUFMAX 2048
+
+enum regnames {
+  /* Core Registers */
+  BFIN_R0 = 0,
+  BFIN_R1,
+  BFIN_R2,
+  BFIN_R3,
+  BFIN_R4,
+  BFIN_R5,
+  BFIN_R6,
+  BFIN_R7,
+  BFIN_P0,
+  BFIN_P1,
+  BFIN_P2,
+  BFIN_P3,
+  BFIN_P4,
+  BFIN_P5,
+  BFIN_SP,
+  BFIN_FP,
+  BFIN_I0,
+  BFIN_I1,
+  BFIN_I2,
+  BFIN_I3,
+  BFIN_M0,
+  BFIN_M1,
+  BFIN_M2,
+  BFIN_M3,
+  BFIN_B0,
+  BFIN_B1,
+  BFIN_B2,
+  BFIN_B3,
+  BFIN_L0,
+  BFIN_L1,
+  BFIN_L2,
+  BFIN_L3,
+  BFIN_A0_DOT_X,
+  BFIN_A0_DOT_W,
+  BFIN_A1_DOT_X,
+  BFIN_A1_DOT_W,
+  BFIN_ASTAT,
+  BFIN_RETS,
+  BFIN_LC0,
+  BFIN_LT0,
+  BFIN_LB0,
+  BFIN_LC1,
+  BFIN_LT1,
+  BFIN_LB1,
+  BFIN_CYCLES,
+  BFIN_CYCLES2,
+  BFIN_USP,
+  BFIN_SEQSTAT,
+  BFIN_SYSCFG,
+  BFIN_RETI,
+  BFIN_RETX,
+  BFIN_RETN,
+  BFIN_RETE,
+
+  /* Pseudo Registers */
+  BFIN_PC,
+  BFIN_CC,
+  BFIN_EXTRA1,		/* Address of .text section.  */
+  BFIN_EXTRA2,		/* Address of .data section.  */
+  BFIN_EXTRA3,		/* Address of .bss section.  */
+  BFIN_FDPIC_EXEC,
+  BFIN_FDPIC_INTERP,
+
+  /* MMRs */
+  BFIN_IPEND,
+
+  /* LAST ENTRY SHOULD NOT BE CHANGED.  */
+  BFIN_NUM_REGS		/* The number of all registers.  */
+};
+
+/* Number of bytes of registers.  */
+#define NUMREGBYTES (BFIN_NUM_REGS * 4)
+
+static inline void arch_kgdb_breakpoint(void)
+{
+	asm volatile ("EXCPT 2;");
+}
+#define BREAK_INSTR_SIZE	2
+#define CACHE_FLUSH_IS_SAFE	1
+#define GDB_ADJUSTS_BREAK_OFFSET
+#define GDB_SKIP_HW_WATCH_TEST
+#define HW_INST_WATCHPOINT_NUM	6
+#define HW_WATCHPOINT_NUM	8
+#define TYPE_INST_WATCHPOINT	0
+#define TYPE_DATA_WATCHPOINT	1
+
+/* Instruction watchpoint address control register bits mask */
+#define WPPWR		0x1
+#define WPIREN01	0x2
+#define WPIRINV01	0x4
+#define WPIAEN0		0x8
+#define WPIAEN1		0x10
+#define WPICNTEN0	0x20
+#define WPICNTEN1	0x40
+#define EMUSW0		0x80
+#define EMUSW1		0x100
+#define WPIREN23	0x200
+#define WPIRINV23	0x400
+#define WPIAEN2		0x800
+#define WPIAEN3		0x1000
+#define WPICNTEN2	0x2000
+#define WPICNTEN3	0x4000
+#define EMUSW2		0x8000
+#define EMUSW3		0x10000
+#define WPIREN45	0x20000
+#define WPIRINV45	0x40000
+#define WPIAEN4		0x80000
+#define WPIAEN5		0x100000
+#define WPICNTEN4	0x200000
+#define WPICNTEN5	0x400000
+#define EMUSW4		0x800000
+#define EMUSW5		0x1000000
+#define WPAND		0x2000000
+
+/* Data watchpoint address control register bits mask */
+#define WPDREN01	0x1
+#define WPDRINV01	0x2
+#define WPDAEN0		0x4
+#define WPDAEN1		0x8
+#define WPDCNTEN0	0x10
+#define WPDCNTEN1	0x20
+
+#define WPDSRC0		0xc0
+#define WPDACC0_OFFSET	8
+#define WPDSRC1		0xc00
+#define WPDACC1_OFFSET	12
+
+/* Watchpoint status register bits mask */
+#define STATIA0		0x1
+#define STATIA1		0x2
+#define STATIA2		0x4
+#define STATIA3		0x8
+#define STATIA4		0x10
+#define STATIA5		0x20
+#define STATDA0		0x40
+#define STATDA1		0x80
+
+#endif