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* upgrade zxlib * adjust validatorPrefs * updating makefile * updating zemu screenshots
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,3 @@ | ||
| APPVERSION_M=1 | ||
| APPVERSION_N=2011 | ||
| APPVERSION_P=2 | ||
| APPVERSION_P=3 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /******************************************************************************* | ||
| * (c) 2020 Zondax GmbH | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| ********************************************************************************/ | ||
|
|
||
| #include "zbuffer.h" | ||
| #include "zxmacros.h" | ||
|
|
||
| typedef struct { | ||
| uint8_t *ptr; | ||
| uint16_t size; | ||
| } zbuffer_t; | ||
|
|
||
| zbuffer_t _internal; | ||
|
|
||
| #define CANARY_EXPECTED 0x987def82u | ||
|
|
||
| zbuffer_error_e zb_get(uint8_t **buffer) { | ||
| *buffer = NULL; | ||
| if (_internal.size == 0 || _internal.ptr == NULL) { | ||
| return zb_not_allocated; | ||
| } | ||
| *buffer = _internal.ptr; | ||
| return zb_no_error; | ||
| } | ||
|
|
||
| zbuffer_error_e zb_init() { | ||
| _internal.size = 0; | ||
| _internal.ptr = NULL; | ||
| return zb_no_error; | ||
| } | ||
|
|
||
| zbuffer_error_e zb_allocate(uint16_t size) { | ||
| if (size % 4 != 0) { | ||
| return zb_misaligned_buffer; | ||
| } | ||
| _internal.size = size; | ||
| _internal.ptr = (uint8_t *) (&app_stack_canary + 4); | ||
|
|
||
| uint32_t *zb_canary = (uint32_t *) (_internal.ptr + _internal.size + 4); | ||
| *zb_canary = CANARY_EXPECTED; | ||
|
|
||
| return zb_no_error; | ||
| } | ||
|
|
||
| zbuffer_error_e zb_deallocate() { | ||
| if (_internal.size == 0) { | ||
| return zb_not_allocated; | ||
| } | ||
|
|
||
| // Flush any information | ||
| MEMZERO(_internal.ptr, _internal.size); | ||
|
|
||
| zb_init(); | ||
| return zb_no_error; | ||
| } | ||
|
|
||
| zbuffer_error_e zb_check_canary() { | ||
| CHECK_APP_CANARY(); | ||
| if (_internal.size != 0) { | ||
| // allocated | ||
| uint32_t *zb_canary = (uint32_t *) (_internal.ptr + _internal.size + 4); | ||
| if (*zb_canary != CANARY_EXPECTED) { | ||
| handle_stack_overflow(); | ||
| } | ||
| } | ||
|
|
||
| return zb_no_error; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| /******************************************************************************* | ||
| * (c) 2020 Zondax GmbH | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| ********************************************************************************/ | ||
|
|
||
| #include <inttypes.h> | ||
| #include <stdint.h> | ||
|
|
||
| typedef enum { | ||
| zb_no_error, | ||
| zb_misaligned_buffer, | ||
| zb_not_allocated | ||
| } zbuffer_error_e; | ||
|
|
||
| // allocate a block at the end of the stack | ||
| // maximum size will not be checked | ||
| zbuffer_error_e zb_allocate(uint16_t size); | ||
|
|
||
| // deallocate memory block as the end of the stack | ||
| zbuffer_error_e zb_deallocate(); | ||
|
|
||
| // obtain a pointer to the allocated block | ||
| zbuffer_error_e zb_get(uint8_t **buffer); | ||
|
|
||
| // check that the block boundary has not been corrupted | ||
| zbuffer_error_e zb_check_canary(); |
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