Outline ![]()
Files ![]()
loading...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Module to run arbitrary code on Xtensa using OpenOCD *
* Copyright (C) 2019 Espressif Systems Ltd. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <target/xtensa/xtensa.h>
#include "esp_xtensa_algorithm.h"
static int esp_xtensa_algo_init(struct target *target, struct esp_algorithm_run_data *run,
uint32_t num_args, va_list ap);
static int esp_xtensa_algo_cleanup(struct target *target, struct esp_algorithm_run_data *run);
static const uint8_t *esp_xtensa_stub_tramp_get(struct target *target, size_t *size);
const struct esp_algorithm_hw xtensa_algo_hw = {
.algo_init = esp_xtensa_algo_init,
.algo_cleanup = esp_xtensa_algo_cleanup,
.stub_tramp_get = esp_xtensa_stub_tramp_get,
};
/* Generated from contrib/loaders/trampoline/espressif/xtensa/esp_xtensa_stub_tramp_win.S */
static const uint8_t esp_xtensa_stub_tramp_win[] = {
#include "../../../contrib/loaders/trampoline/espressif/xtensa/esp_xtensa_stub_tramp_win.inc"
};
static const uint8_t *esp_xtensa_stub_tramp_get(struct target *target, size_t *size)
{
struct xtensa *xtensa = target_to_xtensa(target);
if (!xtensa->core_config->windowed) {
LOG_ERROR("Running stubs is not supported for cores without windowed registers option!");
return NULL;
}
*size = sizeof(esp_xtensa_stub_tramp_win);
return esp_xtensa_stub_tramp_win;
}
static int esp_xtensa_algo_regs_init_start(struct target *target, struct esp_algorithm_run_data *run)
{
uint32_t stack_addr = run->stub.stack_addr;
LOG_TARGET_DEBUG(target, "Check stack addr 0x%x", stack_addr);
if (stack_addr & 0xFUL) {
stack_addr &= ~0xFUL;
LOG_TARGET_DEBUG(target, "Adjust stack addr to 0x%x", stack_addr);
}
stack_addr -= 16;
struct reg_param *params = run->reg_args.params;
init_reg_param(¶ms[0], "a0", 32, PARAM_OUT); /*TODO: move to tramp */
init_reg_param(¶ms[1], "a1", 32, PARAM_OUT);
init_reg_param(¶ms[2], "a8", 32, PARAM_OUT);
init_reg_param(¶ms[3], "windowbase", 32, PARAM_OUT); /*TODO: move to tramp */
init_reg_param(¶ms[4], "windowstart", 32, PARAM_OUT); /*TODO: move to tramp */
init_reg_param(¶ms[5], "ps", 32, PARAM_OUT);
buf_set_u32(params[0].value, 0, 32, 0); /* a0 TODO: move to tramp */
buf_set_u32(params[1].value, 0, 32, stack_addr); /* a1 */
buf_set_u32(params[2].value, 0, 32, run->stub.entry); /* a8 */
buf_set_u32(params[3].value, 0, 32, 0x0); /* initial window base TODO: move to tramp */
buf_set_u32(params[4].value, 0, 32, 0x1); /* initial window start TODO: move to tramp */
buf_set_u32(params[5].value, 0, 32, 0x60025); /* enable WOE, UM and debug interrupts level (6) */
return ERROR_OK;
}
static int esp_xtensa_algo_init(struct target *target, struct esp_algorithm_run_data *run,
uint32_t num_args, va_list ap)
{
enum xtensa_mode core_mode = XT_MODE_ANY;
static const char *const arg_regs[] = { "a2", "a3", "a4", "a5", "a6" };
if (!run)
return ERROR_FAIL;
if (num_args > ARRAY_SIZE(arg_regs)) {
LOG_ERROR("Too many algo user args %u! Max %zu args are supported.", num_args, ARRAY_SIZE(arg_regs));
return ERROR_FAIL;
}
struct xtensa_algorithm *ainfo = calloc(1, sizeof(struct xtensa_algorithm));
if (!ainfo) {
LOG_ERROR("Unable to allocate memory");
return ERROR_FAIL;
}
if (run->arch_info) {
struct xtensa_algorithm *xtensa_algo = run->arch_info;
core_mode = xtensa_algo->core_mode;
}
run->reg_args.first_user_param = ESP_XTENSA_STUB_ARGS_FUNC_START;
run->reg_args.count = run->reg_args.first_user_param + num_args;
if (num_args == 0)
run->reg_args.count++; /* a2 reg is used as the 1st arg and return code */
LOG_DEBUG("reg params count %d (%d/%d).",
run->reg_args.count,
run->reg_args.first_user_param,
num_args);
run->reg_args.params = calloc(run->reg_args.count, sizeof(struct reg_param));
if (!run->reg_args.params) {
free(ainfo);
LOG_ERROR("Unable to allocate memory");
return ERROR_FAIL;
}
esp_xtensa_algo_regs_init_start(target, run);
init_reg_param(&run->reg_args.params[run->reg_args.first_user_param + 0], "a2", 32, PARAM_IN_OUT);
if (num_args > 0) {
uint32_t arg = va_arg(ap, uint32_t);
esp_algorithm_user_arg_set_uint(run, 0, arg);
LOG_DEBUG("Set arg[0] = %d (%s)", arg, run->reg_args.params[run->reg_args.first_user_param + 0].reg_name);
} else {
esp_algorithm_user_arg_set_uint(run, 0, 0);
}
for (unsigned int i = 1; i < num_args; i++) {
uint32_t arg = va_arg(ap, uint32_t);
init_reg_param(&run->reg_args.params[run->reg_args.first_user_param + i], (char *)arg_regs[i], 32, PARAM_OUT);
esp_algorithm_user_arg_set_uint(run, i, arg);
LOG_DEBUG("Set arg[%d] = %d (%s)", i, arg, run->reg_args.params[run->reg_args.first_user_param + i].reg_name);
}
ainfo->core_mode = core_mode;
run->stub.ainfo = ainfo;
return ERROR_OK;
}
static int esp_xtensa_algo_cleanup(struct target *target, struct esp_algorithm_run_data *run)
{
free(run->stub.ainfo);
for (uint32_t i = 0; i < run->reg_args.count; i++)
destroy_reg_param(&run->reg_args.params[i]);
free(run->reg_args.params);
return ERROR_OK;
}
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
Click anywhere in the source to view detailed information here...