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we are now on ATmega1284P

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overflowerror 2014-04-17 22:27:34 +02:00
parent 21a6e4d4a2
commit 27eeeab0e8
1 changed files with 38 additions and 38 deletions
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76
scheduler.asm
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@ -1,57 +1,57 @@
;; scheduler ;; scheduler
; ;
; Because we want want to be able use multible thread, we need a scheduler. ; Because we want want to be able use multible thread, we need a scheduler.
; This scheduler is supposed to support up to 5 threads. ; This scheduler is supposed to support up to 4 threads.
; ;
;; ;;
;; global memory map ;; global memory map
; ;
; $000 ; $0000
; G P R ; G P R
; $01F ; $001F
; $020 ; $0020
; I O R ; I O R
; $05F ; $005F
; $060 ; $0060
; SRAM ; SRAM
; $060 ; $0060
; 192 bytes of scheduler memory ; 192 bytes of scheduler memory
; $102 ; $0102
; $103 ; $0103
; 1069 bytes of heap ; 15,680 bytes of heap
; $52F ; $3EFF
; $530 ; $3F00
; 639 bytes of stack ; 512 bytes of stack
; $62F ; $40FF
; $62F ; $40FF
; ;
;; ;;
; this a ATmega16 specific ; this a ATmega1284P specific
.equ heap_start = 0x103 ; starting address of heap .equ heap_start = 0x0103 ; starting address of heap
.equ heap_end = 0x52F ; ending address of heap .equ heap_end = 0x3EFF ; ending address of heap
.equ scheduler_global_active = 0x060 ; address of active-thread-cell .equ scheduler_global_active = 0x0060 ; address of active-thread-cell
.equ scheduler_global_number = 0x061 ; address of thread-number-cell .equ scheduler_global_number = 0x0061 ; address of thread-number-cell
.equ scheduler_global_maxnum = 0x004 ; maximal number of thread .equ scheduler_global_maxnum = 0x0004 ; maximal number of thread
.equ scheduler_global_statu1 = 0x062 ; address of global-status-cell 1 .equ scheduler_global_statu1 = 0x0062 ; address of global-status-cell 1
.equ scheduler_global_statu2 = 0x063 ; address of global-status-cell 2 .equ scheduler_global_statu2 = 0x0063 ; address of global-status-cell 2
.equ scheduler_global_unused = 0x064 ; start address of unused block .equ scheduler_global_unused = 0x0064 ; start address of unused block
.equ scheduler_global_thread = 0x06B ; starting address of scheduler memory .equ scheduler_global_thread = 0x006B ; starting address of scheduler memory
.equ scheduler_global_length = 0x026 ; length of thread in scheduler memory .equ scheduler_global_length = 0x0026 ; length of thread in scheduler memory
.equ scheduler_global_lastad = 0x102 ; last address of scheduler memory .equ scheduler_global_lastad = 0x0102 ; last address of scheduler memory
.equ scheduler_global_stacks = 0x530 ; start address of stacks .equ scheduler_global_stacks = 0x3FFF ; start address of stacks
.equ scheduler_offset_stacks = 0x040 ; length of 1 stack .equ scheduler_offset_stacks = 0x0080 ; length of 1 stack
.equ scheduler_offset_instat = 0x000 ; offset of internal sr in scheduler memory .equ scheduler_offset_instat = 0x0000 ; offset of internal sr in scheduler memory
.equ scheduler_offset_instrh = 0x001 ; offset of iph in scheduler memory .equ scheduler_offset_instrh = 0x0001 ; offset of iph in scheduler memory
.equ scheduler_offset_instrl = 0x002 ; offset of ipl in scheduler memory .equ scheduler_offset_instrl = 0x0002 ; offset of ipl in scheduler memory
.equ scheduler_offset_status = 0x003 ; offset of sr in scheduler memory .equ scheduler_offset_status = 0x0003 ; offset of sr in scheduler memory
.equ scheduler_offset_stackh = 0x004 ; offset of sph in scheduler memory .equ scheduler_offset_stackh = 0x0004 ; offset of sph in scheduler memory
.equ scheduler_offset_stackl = 0x005 ; offset of spl in scheduler memory .equ scheduler_offset_stackl = 0x0005 ; offset of spl in scheduler memory
.equ scheduler_offset_gprsta = 0x006 ; start offset of gpr in scheduler momory .equ scheduler_offset_gprsta = 0x0006 ; start offset of gpr in scheduler momory
.equ scheduler_offset_gprend = 0x025 ; end offset of gpr in scheduler memory .equ scheduler_offset_gprend = 0x0025 ; end offset of gpr in scheduler memory
;; scheduler memory ;; scheduler memory
; ;
@ -126,7 +126,7 @@
; ;
;; stacks ;; stacks
; ;
; As we should support 5 threads, we need 5 stacks. ; As we should support 4 threads, we need 4 stacks.
; For the calculation of the stack space (see global memory map) I assumed that ; For the calculation of the stack space (see global memory map) I assumed that
; no stack will grow over 127 entries. ; no stack will grow over 127 entries.
; Our initial stackpointer for thread x will be calculated this way: ; Our initial stackpointer for thread x will be calculated this way: