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Add ARM v8 AArch64 semihosting support

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This patch implements semihosting support for AArch64. This picks
code from previously submitted AArch64 semihosting support patch
and rebases on top of reworked semihosting code. Tested in AArch64
mode on a Lemaker Hikey Board with NewLib and GDB.

Change-Id: I228a38f1de24f79e49ba99d8514d822a28c2950b
Signed-off-by: Omair Javaid <omair.javaid@linaro.org>
Reviewed-on: http://openocd.zylin.com/4537
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
This commit is contained in:
Omair Javaid
2018-05-23 17:43:47 +05:00
committed by Matthias Welwarsky
parent d04254196e
commit a7da117ad6
5 changed files with 112 additions and 22 deletions
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13
src/target/aarch64.c
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@@ -28,6 +28,7 @@
#include "target_type.h"
#include "armv8_opcodes.h"
#include "armv8_cache.h"
#include "arm_semihosting.h"
#include <helper/time_support.h>
enum restart_mode {
@@ -522,6 +523,9 @@ static int aarch64_poll(struct target *target)
if (target->smp)
update_halt_gdb(target, debug_reason);
if (arm_semihosting(target, &retval) != 0)
return retval;
switch (prev_target_state) {
case TARGET_RUNNING:
case TARGET_UNKNOWN:
@@ -543,6 +547,9 @@ static int aarch64_poll(struct target *target)
static int aarch64_halt(struct target *target)
{
struct armv8_common *armv8 = target_to_armv8(target);
armv8->last_run_control_op = ARMV8_RUNCONTROL_HALT;
if (target->smp)
return aarch64_halt_smp(target, false);
@@ -831,6 +838,9 @@ static int aarch64_resume(struct target *target, int current,
int retval = 0;
uint64_t addr = address;
struct armv8_common *armv8 = target_to_armv8(target);
armv8->last_run_control_op = ARMV8_RUNCONTROL_RESUME;
if (target->state != TARGET_HALTED)
return ERROR_TARGET_NOT_HALTED;
@@ -1069,6 +1079,8 @@ static int aarch64_step(struct target *target, int current, target_addr_t addres
int retval;
uint32_t edecr;
armv8->last_run_control_op = ARMV8_RUNCONTROL_STEP;
if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
@@ -2351,6 +2363,7 @@ static int aarch64_init_target(struct command_context *cmd_ctx,
struct target *target)
{
/* examine_first() does a bunch of this */
arm_semihosting_init(target);
return ERROR_OK;
}