ARM: use <target/arm.h> not armv4_5.h

Move most declarations in <target/armv4_5.h> to <target/arm.h>
and update users.

What's left in the older file is stuff that I think should be
removed ... the old register cache access stuff, which makes it
awkward to support microcontroller profile (Cortex-M) cores.

The armv4_5_run_algorithm() declaration was moved too, even
though it's not yet as generic as it probably ought to be.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

1 files changed, 206 insertions, 0 deletions

diff --git a/src/target/arm.h b/src/target/arm.h
new file mode 100644
index 00000000..00dbe2d6
--- /dev/null
+++ b/src/target/arm.h
@@ -0,0 +1,206 @@
+/*
+ * Copyright (C) 2005 by Dominic Rath
+ * Dominic.Rath@gmx.de
+ *
+ * Copyright (C) 2008 by Spencer Oliver
+ * spen@spen-soft.co.uk
+ *
+ * Copyright (C) 2009 by 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
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+#ifndef ARM_H
+#define ARM_H
+
+#include <target/target.h>
+#include <helper/command.h>
+
+
+/**
+ * @file
+ * Holds the interface to ARM cores.
+ *
+ * At this writing, only "classic ARM" cores built on the ARMv4 register
+ * and mode model are supported.  The Thumb2-only microcontroller profile
+ * support has not yet been integrated, affecting Cortex-M parts.
+ */
+
+/**
+ * These numbers match the five low bits of the *PSR registers on
+ * "classic ARM" processors, which build on the ARMv4 processor
+ * modes and register set.
+ */
+enum arm_mode {
+	ARM_MODE_USR = 16,
+	ARM_MODE_FIQ = 17,
+	ARM_MODE_IRQ = 18,
+	ARM_MODE_SVC = 19,
+	ARM_MODE_ABT = 23,
+	ARM_MODE_MON = 26,
+	ARM_MODE_UND = 27,
+	ARM_MODE_SYS = 31,
+	ARM_MODE_ANY = -1
+};
+
+const char *arm_mode_name(unsigned psr_mode);
+bool is_arm_mode(unsigned psr_mode);
+
+/** The PSR "T" and "J" bits define the mode of "classic ARM" cores. */
+enum arm_state {
+	ARM_STATE_ARM,
+	ARM_STATE_THUMB,
+	ARM_STATE_JAZELLE,
+	ARM_STATE_THUMB_EE,
+};
+
+extern const char *arm_state_strings[];
+
+#define ARM_COMMON_MAGIC 0x0A450A45
+
+/**
+ * Represents a generic ARM core, with standard application registers.
+ *
+ * There are sixteen application registers (including PC, SP, LR) and a PSR.
+ * Cortex-M series cores do not support as many core states or shadowed
+ * registers as traditional ARM cores, and only support Thumb2 instructions.
+ */
+struct arm {
+	int common_magic;
+	struct reg_cache *core_cache;
+
+	/** Handle to the CPSR; valid in all core modes. */
+	struct reg *cpsr;
+
+	/** Handle to the SPSR; valid only in core modes with an SPSR. */
+	struct reg *spsr;
+
+	/** Support for arm_reg_current() */
+	const int *map;
+
+	/**
+	 * Indicates what registers are in the ARM state core register set.
+	 * ARM_MODE_ANY indicates the standard set of 37 registers,
+	 * seen on for example ARM7TDMI cores.  ARM_MODE_MON indicates three
+	 * more registers are shadowed, for "Secure Monitor" mode.
+	 */
+	enum arm_mode core_type;
+
+	/** Record the current core mode: SVC, USR, or some other mode. */
+	enum arm_mode core_mode;
+
+	/** Record the current core state: ARM, Thumb, or otherwise. */
+	enum arm_state core_state;
+
+	/** Flag reporting unavailability of the BKPT instruction. */
+	bool is_armv4;
+
+	/** Flag reporting whether semihosting is active. */
+	bool is_semihosting;
+
+	/** Value to be returned by semihosting SYS_ERRNO request. */
+	int semihosting_errno;
+
+	/** Backpointer to the target. */
+	struct target *target;
+
+	/** Handle for the debug module, if one is present. */
+	struct arm_dpm *dpm;
+
+	/** Handle for the Embedded Trace Module, if one is present. */
+	struct etm_context *etm;
+
+	/* FIXME all these methods should take "struct arm *" not target */
+
+	/** Retrieve all core registers, for display. */
+	int (*full_context)(struct target *target);
+
+	/** Retrieve a single core register. */
+	int (*read_core_reg)(struct target *target, struct reg *reg,
+			int num, enum arm_mode mode);
+	int (*write_core_reg)(struct target *target, struct reg *reg,
+			int num, enum arm_mode mode, uint32_t value);
+
+	/** Read coprocessor register.  */
+	int (*mrc)(struct target *target, int cpnum,
+			uint32_t op1, uint32_t op2,
+			uint32_t CRn, uint32_t CRm,
+			uint32_t *value);
+
+	/** Write coprocessor register.  */
+	int (*mcr)(struct target *target, int cpnum,
+			uint32_t op1, uint32_t op2,
+			uint32_t CRn, uint32_t CRm,
+			uint32_t value);
+
+	void *arch_info;
+};
+
+/** Convert target handle to generic ARM target state handle. */
+static inline struct arm *target_to_arm(struct target *target)
+{
+	return target->arch_info;
+}
+
+static inline bool is_arm(struct arm *arm)
+{
+	return arm && arm->common_magic == ARM_COMMON_MAGIC;
+}
+
+struct arm_algorithm {
+	int common_magic;
+
+	enum arm_mode core_mode;
+	enum arm_state core_state;
+};
+
+struct arm_reg {
+	int num;
+	enum arm_mode mode;
+	struct target *target;
+	struct arm *armv4_5_common;
+	uint32_t value;
+};
+
+struct reg_cache *arm_build_reg_cache(struct target *target, struct arm *arm);
+
+extern const struct command_registration arm_command_handlers[];
+
+int arm_arch_state(struct target *target);
+int arm_get_gdb_reg_list(struct target *target,
+		struct reg **reg_list[], int *reg_list_size);
+
+int arm_init_arch_info(struct target *target, struct arm *arm);
+
+/* REVISIT rename this once it's usable by ARMv7-M */
+int armv4_5_run_algorithm(struct target *target,
+		int num_mem_params, struct mem_param *mem_params,
+		int num_reg_params, struct reg_param *reg_params,
+		uint32_t entry_point, uint32_t exit_point,
+		int timeout_ms, void *arch_info);
+
+int arm_checksum_memory(struct target *target,
+		uint32_t address, uint32_t count, uint32_t *checksum);
+int arm_blank_check_memory(struct target *target,
+		uint32_t address, uint32_t count, uint32_t *blank);
+
+void arm_set_cpsr(struct arm *arm, uint32_t cpsr);
+struct reg *arm_reg_current(struct arm *arm, unsigned regnum);
+
+extern struct reg arm_gdb_dummy_fp_reg;
+extern struct reg arm_gdb_dummy_fps_reg;
+
+#endif /* ARM_H */