kopia lustrzana https://github.com/espressif/esp-idf
52 wiersze
1.9 KiB
ArmAsm
52 wiersze
1.9 KiB
ArmAsm
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <freertos/xtensa_context.h>
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.extern xtensa_shared_stack
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.extern xtensa_shared_stack_callback
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.extern xtensa_shared_stack_function_done
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.extern xtensa_shared_stack_env
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.extern longjmp
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.text
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/* extern void esp_shared_stack_invoke_function(void) */
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.globl esp_shared_stack_invoke_function
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.type esp_shared_stack_invoke_function,@function
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.align 4
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esp_shared_stack_invoke_function:
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#ifndef __XTENSA_CALL0_ABI__
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movi a0, 0 /* must not rotate the window here, */
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/* the state of execution for shared stack */
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/* functions will be completely destroyed at end */
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movi a6, xtensa_shared_stack
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l32i sp, a6, 0 /* load shared stack pointer */
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movi a12, xtensa_shared_stack_callback
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l32i a12, a12, 0
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callx4 a12 /* call user function */
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movi a6, xtensa_shared_stack_function_done
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movi a7, 1
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s32i a7, a6, 0 /* hint the function was finished */
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movi a6, xtensa_shared_stack_env
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movi a7, 0
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movi a12, longjmp
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callx4 a12 /* jump to last clean state previously saved */
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ret
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#else
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#error "this code is written for Window ABI"
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#endif
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