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Intel® QuarkTM microcontroller D1000 PRM November 2015 2 Document Number: 332913-002US Contents—Intel® QuarkTM microcontroller D1000 Contents 1.0 Introduction ............................................................................................................ 12 1.1 Intel® Quark™ microcontroller D1000 CPU Overview ............................................. 12 1.2 Interrupts ........................................................................................................ 12 1.3 I/O.................................................................................................................. 12 1.4 Code and Data Interfaces ................................................................................... 13 1.4.1 Instruction Alignment ............................................................................. 13 1.4.2 Data Alignment ...................................................................................... 13 1.4.3 Stack Alignment..................................................................................... 13 1.5 Floating Point.................................................................................................... 13 2.0 Compatibility ........................................................................................................... 14 3.0 Memory Model ......................................................................................................... 16 3.1 Bit and Byte Order............................................................................................. 16 3.2 Addressing ....................................................................................................... 16 3.3 Memory Ordering .............................................................................................. 16 3.3.1 Strong Ordering Rules............................................................................. 17 3.3.2 Weak Ordering Rules .............................................................................. 17 3.3.3 Mixed Ordering Rules.............................................................................. 17 3.3.4 Write Flushing........................................................................................ 18 3.4 Self-Modifying Code........................................................................................... 18 3.5 Stack Behavior.................................................................................................. 18 3.5.1 Stack Alignment..................................................................................... 18 3.5.2 Stack Over/Underflow ............................................................................. 18 4.0 Registers ................................................................................................................. 20 4.1 General Purpose Registers .................................................................................. 20 4.2 Special Purpose Registers................................................................................... 21 4.3 EFLAGS............................................................................................................ 21 5.0 Exceptions............................................................................................................... 24 5.1 Exception Types................................................................................................ 24 5.1.1 Interrupts ............................................................................................. 24 5.1.2 Faults ................................................................................................... 24 5.1.3 Traps.................................................................................................... 25 5.1.4 Aborts .................................................................................................. 25 5.2 Exception Handling............................................................................................ 25 5.3 Triple Fault....................................................................................................... 25 5.4 Interrupt Descriptor Table .................................................................................. 26 5.5 Format of Interrupt Descriptors........................................................................... 26 5.6 Exception 0 - Divide Error (#DE) ......................................................................... 27 5.6.1 Exception Class...................................................................................... 27 5.6.2 Error Code ............................................................................................ 27 5.6.3 Saved Instruction Pointer ........................................................................ 27 5.6.4 Program State Change ............................................................................ 27 5.7 Exception 1 - Debug Exception (#DB) .................................................................. 27 5.7.1 Exception Class...................................................................................... 28 5.7.2 Error Code ............................................................................................ 28 5.7.3 Saved Instruction Pointer ........................................................................ 28 5.7.4 Program State Change ............................................................................ 28 5.8 Exception 3 - Breakpoint (#BP) ........................................................................... 28 5.8.1 Exception Stack Frame............................................................................ 29 5.8.2 Exception Class...................................................................................... 29 Intel® QuarkTM microcontroller D1000 November 2015 PRM Document Number: 332913 002US 3 Intel® QuarkTM microcontroller D1000—Contents 5.8.3 Error Code .............................................................................................29 5.8.4 Saved Instruction Pointer.........................................................................29 5.8.5 Program State Change ............................................................................29 5.9 Exception 6 - Invalid Opcode (#UD) .....................................................................29 5.9.1 Exception Stack Frame ............................................................................30 5.9.2 Exception Class ......................................................................................30 5.9.3 Error Code .............................................................................................30 5.9.4 Saved Instruction Pointer.........................................................................30 5.9.5 Program State Change ............................................................................30 5.10 Exception 8 - Double Fault (#DF).........................................................................30 5.10.1 Exception Stack Frame ............................................................................30 5.10.2 Exception Class ......................................................................................31 5.10.3 Error Code .............................................................................................31 5.10.4 Saved Instruction Pointer.........................................................................31 5.10.5 Program State Change ............................................................................31 5.11 Exception 11 - Not Present (#NP) ........................................................................31 5.11.1 Exception Stack Frame ............................................................................31 5.11.2 Exception Class ......................................................................................32 5.11.3 Error Code .............................................................................................32