Re-sync with upstream and stripping away none kernel related.

portable/Paradigm/Tern_EE/small/portasm.h

@@ -0,0 +1,72 @@
+/*
+ * FreeRTOS Kernel V10.3.0
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#ifndef PORT_ASM_H
+#define PORT_ASM_H
+
+typedef void TCB_t;
+extern volatile TCB_t * volatile pxCurrentTCB;
+extern void vTaskSwitchContext( void );
+
+/*
+ * Saves the stack pointer for one task into its TCB, calls
+ * vTaskSwitchContext() to update the TCB being used, then restores the stack
+ * from the new TCB read to run the task.
+ */
+void portEND_SWITCHING_ISR( void );
+
+/*
+ * Load the stack pointer from the TCB of the task which is going to be first
+ * to execute.  Then force an IRET so the registers and IP are popped off the
+ * stack.
+ */
+void portFIRST_CONTEXT( void );
+
+#define portEND_SWITCHING_ISR()											\
+							asm { mov	bx, [pxCurrentTCB]			}   \
+                            asm { mov	word ptr [bx], sp			}	\
+							asm { call  far ptr vTaskSwitchContext	}	\
+							asm { mov	bx, [pxCurrentTCB]			}	\
+							asm { mov	sp, [bx]					}
+
+#define portFIRST_CONTEXT()											\
+							asm { mov	bx, [pxCurrentTCB]			}	\
+							asm { mov	sp, [bx]					}	\
+							asm { pop	bp							}	\
+							asm { pop	di							}	\
+							asm { pop	si							}	\
+   							asm { pop	ds							}	\
+   							asm { pop	es							}	\
+							asm { pop	dx							}	\
+							asm { pop	cx							}	\
+							asm { pop	bx							}	\
+							asm { pop	ax							}	\
+							asm { iret								}
+
+
+#endif
+