X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=src%2Ftarget%2Fmips32.c;h=bcf96147f13f149d15599ea9aae6505b51aff9ed;hb=27ad4524afc3262e64aff2ae917d10881e8d6823;hp=96e509c3b895ad42b3a47bd18b6ece9ee17b804f;hpb=ef1cfb23947bd32798077c6abb5c25a049460ae9;p=openocd.git

diff --git a/src/target/mips32.c b/src/target/mips32.c
index 96e509c3b8..bcf96147f1 100644
--- a/src/target/mips32.c
+++ b/src/target/mips32.c
@@ -4,6 +4,9 @@
  *                                                                         *
  *   Copyright (C) 2008 by David T.L. Wong                                 *
  *                                                                         *
+ *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
+ *   oyvind.harboe@zylin.com                                               *
+ *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
@@ -32,10 +35,10 @@
 
 char* mips32_core_reg_list[] =
 {
-	"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
-	"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
-	"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
-	"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
+	"zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
+	"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
+	"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
+	"t8", "t9", "k0", "k1", "gp", "sp", "fp", "ra",
 	"status", "lo", "hi", "badvaddr", "cause", "pc"
 };
 
@@ -286,7 +289,10 @@ reg_cache_t *mips32_build_reg_cache(target_t *target)
 	
 	if (mips32_core_reg_arch_type == -1)
 		mips32_core_reg_arch_type = register_reg_arch_type(mips32_get_core_reg, mips32_set_core_reg);
-		
+
+	register_init_dummy(&mips32_gdb_dummy_fsr_reg);
+	register_init_dummy(&mips32_gdb_dummy_fir_reg);
+
 	/* Build the process context cache */ 
 	cache->name = "mips32 registers";
 	cache->next = NULL;
@@ -319,6 +325,10 @@ int mips32_init_arch_info(target_t *target, mips32_common_t *mips32, int chain_p
 	target->arch_info = mips32;
 	mips32->common_magic = MIPS32_COMMON_MAGIC;
 	
+	/* has breakpoint/watchpint unit been scanned */
+	mips32->bp_scanned = 0;
+	mips32->data_break_list = NULL;
+	
 	mips32->ejtag_info.chain_pos = chain_pos;
 	mips32->read_core_reg = mips32_read_core_reg;
 	mips32->write_core_reg = mips32_write_core_reg;
@@ -336,3 +346,82 @@ int mips32_run_algorithm(struct target_s *target, int num_mem_params, mem_param_
 	/*TODO*/
 	return ERROR_OK;
 }
+
+int mips32_examine(struct target_s *target)
+{
+	mips32_common_t *mips32 = target->arch_info;
+	
+	if (!target->type->examined)
+	{
+		target->type->examined = 1;
+	
+		/* we will configure later */
+		mips32->bp_scanned = 0;
+		mips32->num_inst_bpoints = 0;
+		mips32->num_data_bpoints = 0;
+		mips32->num_inst_bpoints_avail = 0;
+		mips32->num_data_bpoints_avail = 0;
+	}
+		
+	return ERROR_OK;
+}
+
+int mips32_configure_break_unit(struct target_s *target)
+{
+	/* get pointers to arch-specific information */
+	mips32_common_t *mips32 = target->arch_info;
+	int retval;
+	u32 dcr, bpinfo;
+	int i;
+	
+	if (mips32->bp_scanned)
+		return ERROR_OK;
+	
+	/* get info about breakpoint support */
+	if ((retval = target_read_u32(target, EJTAG_DCR, &dcr)) != ERROR_OK)
+		return retval;
+	
+	if (dcr & (1 << 16))
+	{
+		/* get number of inst breakpoints */
+		if ((retval = target_read_u32(target, EJTAG_IBS, &bpinfo)) != ERROR_OK)
+			return retval;
+		
+		mips32->num_inst_bpoints = (bpinfo >> 24) & 0x0F;
+		mips32->num_inst_bpoints_avail = mips32->num_inst_bpoints;
+		mips32->inst_break_list = calloc(mips32->num_inst_bpoints, sizeof(mips32_comparator_t));
+		for (i = 0; i < mips32->num_inst_bpoints; i++)
+		{
+			mips32->inst_break_list[i].reg_address = EJTAG_IBA1 + (0x100 * i);
+		}
+		
+		/* clear IBIS reg */
+		if ((retval = target_write_u32(target, EJTAG_IBS, 0)) != ERROR_OK)
+			return retval;
+	}
+	
+	if (dcr & (1 << 17))
+	{
+		/* get number of data breakpoints */
+		if ((retval = target_read_u32(target, EJTAG_DBS, &bpinfo)) != ERROR_OK)
+			return retval;
+		
+		mips32->num_data_bpoints = (bpinfo >> 24) & 0x0F;
+		mips32->num_data_bpoints_avail = mips32->num_data_bpoints;
+		mips32->data_break_list = calloc(mips32->num_data_bpoints, sizeof(mips32_comparator_t));
+		for (i = 0; i < mips32->num_data_bpoints; i++)
+		{
+			mips32->data_break_list[i].reg_address = EJTAG_DBA1 + (0x100 * i);
+		}
+		
+		/* clear DBIS reg */
+		if ((retval = target_write_u32(target, EJTAG_DBS, 0)) != ERROR_OK)
+			return retval;
+	}
+	
+	LOG_DEBUG("DCR 0x%x numinst %i numdata %i", dcr, mips32->num_inst_bpoints, mips32->num_data_bpoints);
+	
+	mips32->bp_scanned = 1;
+	
+	return ERROR_OK;
+}