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Diffstat (limited to 'agent/tcf/framework/cpudefs-ext.h')
-rw-r--r--agent/tcf/framework/cpudefs-ext.h135
1 files changed, 135 insertions, 0 deletions
diff --git a/agent/tcf/framework/cpudefs-ext.h b/agent/tcf/framework/cpudefs-ext.h
new file mode 100644
index 00000000..cc3f788c
--- /dev/null
+++ b/agent/tcf/framework/cpudefs-ext.h
@@ -0,0 +1,135 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * and the Eclipse Distribution License is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ * You may elect to redistribute this code under either of these licenses.
+ *
+ * Contributors:
+ * Wind River Systems - initial API and implementation
+ *******************************************************************************/
+
+/*
+ * This file provides debug context register definitions and lookup functions.
+ * It is included into cpudefs.c.
+ * The code assumes that all contexts share same register definitions.
+ * If it is not the case, this file needs to be substituted with alternative implementation.
+ */
+
+#include <tcf/cpudefs-mdep.h>
+
+struct RegisterData {
+ REG_SET data;
+ REG_SET mask;
+};
+
+RegisterDefinition * get_reg_definitions(Context * ctx) {
+ return regs_index;
+}
+
+uint8_t * get_break_instruction(Context * ctx, size_t * size) {
+ *size = sizeof(BREAK_INST);
+ return BREAK_INST;
+}
+
+static RegisterDefinition * get_reg_by_dwarf_id(unsigned id) {
+ static RegisterDefinition ** map = NULL;
+ static unsigned map_length = 0;
+
+ if (map == NULL) {
+ RegisterDefinition * r;
+ for (r = regs_index; r->name != NULL; r++) {
+ if (r->dwarf_id >= (int)map_length) map_length = r->dwarf_id + 1;
+ }
+ map = (RegisterDefinition **)loc_alloc_zero(sizeof(RegisterDefinition *) * map_length);
+ for (r = regs_index; r->name != NULL; r++) {
+ if (r->dwarf_id >= 0) map[r->dwarf_id] = r;
+ }
+ }
+ return id < map_length ? map[id] : NULL;
+}
+
+static RegisterDefinition * get_reg_by_eh_frame_id(unsigned id) {
+ static RegisterDefinition ** map = NULL;
+ static unsigned map_length = 0;
+
+ if (map == NULL) {
+ RegisterDefinition * r;
+ for (r = regs_index; r->name != NULL; r++) {
+ if (r->eh_frame_id >= (int)map_length) map_length = r->eh_frame_id + 1;
+ }
+ map = (RegisterDefinition **)loc_alloc_zero(sizeof(RegisterDefinition *) * map_length);
+ for (r = regs_index; r->name != NULL; r++) {
+ if (r->eh_frame_id >= 0) map[r->eh_frame_id] = r;
+ }
+ }
+ return id < map_length ? map[id] : NULL;
+}
+
+RegisterDefinition * get_reg_by_id(Context * ctx, unsigned id, RegisterIdScope * scope) {
+ RegisterDefinition * def = NULL;
+ switch (scope->id_type) {
+ case REGNUM_DWARF: def = get_reg_by_dwarf_id(id); break;
+ case REGNUM_EH_FRAME: def = get_reg_by_eh_frame_id(id); break;
+ }
+ if (def == NULL) set_errno(ERR_OTHER, "Invalid register ID");
+ return def;
+}
+
+int read_reg_bytes(StackFrame * frame, RegisterDefinition * reg_def, unsigned offs, unsigned size, uint8_t * buf) {
+ if (reg_def != NULL && frame != NULL) {
+ if (frame->is_top_frame) {
+ return context_read_reg(frame->ctx, reg_def, offs, size, buf);
+ }
+ if (frame->regs != NULL) {
+ size_t i;
+ uint8_t * r_addr = (uint8_t *)&frame->regs->data + reg_def->offset;
+ uint8_t * m_addr = (uint8_t *)&frame->regs->mask + reg_def->offset;
+ for (i = 0; i < size; i++) {
+ if (m_addr[offs + i] != 0xff) {
+ errno = ERR_INV_CONTEXT;
+ return -1;
+ }
+ }
+ assert(reg_def->offset + reg_def->size <= sizeof(REG_SET));
+ if (offs + size > reg_def->size) {
+ errno = ERR_INV_DATA_SIZE;
+ return -1;
+ }
+ memcpy(buf, r_addr + offs, size);
+ return 0;
+ }
+ }
+ errno = ERR_INV_CONTEXT;
+ return -1;
+}
+
+int write_reg_bytes(StackFrame * frame, RegisterDefinition * reg_def, unsigned offs, unsigned size, uint8_t * buf) {
+ if (reg_def != NULL && frame != NULL) {
+ if (frame->is_top_frame) {
+ return context_write_reg(frame->ctx, reg_def, offs, size, buf);
+ }
+ if (frame->regs == NULL && context_has_state(frame->ctx)) {
+ frame->regs = (RegisterData *)loc_alloc_zero(sizeof(RegisterData));
+ }
+ if (frame->regs != NULL) {
+ uint8_t * r_addr = (uint8_t *)&frame->regs->data + reg_def->offset;
+ uint8_t * m_addr = (uint8_t *)&frame->regs->mask + reg_def->offset;
+
+ assert(reg_def->offset + reg_def->size <= sizeof(REG_SET));
+ if (offs + size > reg_def->size) {
+ errno = ERR_INV_DATA_SIZE;
+ return -1;
+ }
+ memcpy(r_addr + offs, buf, size);
+ memset(m_addr + offs, 0xff, size);
+ return 0;
+ }
+ }
+ errno = ERR_INV_CONTEXT;
+ return -1;
+}

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