esp_xtensa_semihosting.c File Reference

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Macros
#define	ESP_XTENSA_SYSCALL   0x41E0 /* XT_INS_BREAK(1, 14) */
#define	ESP_XTENSA_SYSCALL_SZ   3
#define	XTENSA_SYSCALL_ERRNO_REG   XT_REG_IDX_A3
#define	XTENSA_SYSCALL_OP_REG   XT_REG_IDX_A2
#define	XTENSA_SYSCALL_RETVAL_REG   XT_REG_IDX_A2

Functions
int	esp_xtensa_semihosting (struct target *target, int *retval)
	Checks and processes an ESP Xtensa semihosting request. More...
int	esp_xtensa_semihosting_init (struct target *target)
static int	esp_xtensa_semihosting_post_result (struct target *target)
static int	esp_xtensa_semihosting_setup (struct target *target, int enable)
static int	xtensa_semihosting_init (struct target *target)

Macro Definition Documentation

ESP_XTENSA_SYSCALL

#define ESP_XTENSA_SYSCALL   0x41E0 /* XT_INS_BREAK(1, 14) */

Definition at line 17 of file esp_xtensa_semihosting.c.

ESP_XTENSA_SYSCALL_SZ

#define ESP_XTENSA_SYSCALL_SZ   3

Definition at line 18 of file esp_xtensa_semihosting.c.

XTENSA_SYSCALL_ERRNO_REG

#define XTENSA_SYSCALL_ERRNO_REG   XT_REG_IDX_A3

Definition at line 22 of file esp_xtensa_semihosting.c.

XTENSA_SYSCALL_OP_REG

#define XTENSA_SYSCALL_OP_REG   XT_REG_IDX_A2

Definition at line 20 of file esp_xtensa_semihosting.c.

XTENSA_SYSCALL_RETVAL_REG

#define XTENSA_SYSCALL_RETVAL_REG   XT_REG_IDX_A2

Definition at line 21 of file esp_xtensa_semihosting.c.

Function Documentation

esp_xtensa_semihosting()

int esp_xtensa_semihosting	(	struct target *	target,
		int *	retval
	)

Checks and processes an ESP Xtensa semihosting request.

This is meant to be called when the target is stopped due to a debug mode entry. If the value 0 is returned then there was nothing to process. A non-zero return value signifies that a request was processed and the target resumed, or an error was encountered, in which case the caller must return immediately.

Parameters

target	Pointer to the ESP Xtensa target to process.
retval	Pointer to a location where the return code will be stored

Returns

SEMIHOSTING_HANDLED if a request was processed or SEMIHOSTING_NONE with the proper retval

Definition at line 50 of file esp_xtensa_semihosting.c.

References a2, a3, semihosting::basedir, buf_get_u32(), DEBUGCAUSE_BI, DEBUGCAUSE_BN, ERROR_OK, ESP_XTENSA_SYSCALL, ESP_XTENSA_SYSCALL_SZ, semihosting::hit_fileio, semihosting::is_resumable, LOG_TARGET_DEBUG, LOG_TARGET_ERROR, esp_semihost_data::need_resume, semihosting::op, esp_semihost_data::ops, semihosting::param, esp_semihost_ops::prepare, esp_xtensa_common::semihost, target::semihosting, semihosting_common(), SEMIHOSTING_HANDLED, SEMIHOSTING_NONE, target_read_memory(), target_to_esp_xtensa(), XT_REG_IDX_A2, XT_REG_IDX_A3, XT_REG_IDX_DEBUGCAUSE, XT_REG_IDX_PC, and xtensa_reg_get().

Referenced by esp32s2_poll(), and esp_xtensa_smp_poll().

esp_xtensa_semihosting_init()

int esp_xtensa_semihosting_init

(

struct target *

target

)

Definition at line 106 of file esp_xtensa_semihosting.c.

References ERROR_OK, esp_semihosting_common(), target::semihosting, semihosting::user_command_extension, semihosting::word_size_bytes, and xtensa_semihosting_init().

Referenced by esp_xtensa_smp_target_init().

esp_xtensa_semihosting_post_result()

static int esp_xtensa_semihosting_post_result ( struct target *  target )

static

Definition at line 31 of file esp_xtensa_semihosting.c.

References ERROR_OK, semihosting::result, target::semihosting, semihosting::sys_errno, xtensa_reg_set(), XTENSA_SYSCALL_ERRNO_REG, and XTENSA_SYSCALL_RETVAL_REG.

Referenced by xtensa_semihosting_init().

esp_xtensa_semihosting_setup()

static int esp_xtensa_semihosting_setup ( struct target *  target, int  enable  )

static

Definition at line 24 of file esp_xtensa_semihosting.c.

References ERROR_OK, and LOG_TARGET_DEBUG.

Referenced by xtensa_semihosting_init().

xtensa_semihosting_init()

static int xtensa_semihosting_init ( struct target *  target )

static

Definition at line 101 of file esp_xtensa_semihosting.c.

References esp_xtensa_semihosting_post_result(), esp_xtensa_semihosting_setup(), and semihosting_common_init().

Referenced by esp_xtensa_semihosting_init().