Modified gen_mk_src script for asm file, moved asm .S file in relative cpu hw section

[bertos.git] / bertos / cpu / i196 / hw / switch_i196.s32

diff --git a/bertos/cpu/i196/hw/switch_i196.s32 b/bertos/cpu/i196/hw/switch_i196.s32
new file mode 100644 (file)
index 0000000..a2f3c70
--- /dev/null
+++ b/bertos/cpu/i196/hw/switch_i196.s32
@@ -0,0 +1,92 @@
+;* Copyright 2004 Develer S.r.l. (http://www.develer.com/)
+;* Copyright 1999,2000,2001 Bernardo Innocenti <bernie@develer.com>
+;* This file is part of DevLib - See devlib/README for information.
+;*
+;* \version $Id$
+;*
+;* \author Bernardo Innocenti <bernie@develer.com>
+;*
+
+;* $Log$
+;* Revision 1.2  2004/06/06 16:14:12  bernie
+;* Add DevLib license information.
+;*
+;* Revision 1.1  2004/05/23 17:27:00  bernie
+;* Import kern/ subdirectory.
+;*
+;*
+
+!!!!!! THIS FILE HAS NOT BEEN REVISED FOR THE NEW SCHEDULER API !!!!!!
+
+
+
+       NAME    AsmSwitch
+       RSEG    CODE
+
+       EXTERN  ?LR
+       EXTERN  ?GR
+       PUBLIC  AsmSwitchContext
+       PUBLIC  AsmReplaceContext
+
+
+;* Perform low-level process context switching
+;*
+;*     void AsmSwitchContext(cpustack_t *new_sp, cpustack_t **save_sp)
+;*                                        GR+0                 SP+2
+;*
+;* Replace current context with new process
+;*
+;*     void AsmReplaceContext(cpustack_t *new_sp, cpustack_t **dummy)
+;*                                         GR+0                 SP+2
+;*
+
+AsmSwitchContext:
+
+; pop 2nd parameter from the stack
+       ld      ?GR+2,2[SP]
+
+; save all registers
+       push    ?LR+0
+       push    ?LR+2
+       push    ?LR+4
+       push    ?LR+6
+       push    ?LR+8
+       push    ?LR+10
+       push    ?LR+12
+       push    ?LR+14
+       push    ?LR+16
+       push    ?LR+18
+       push    ?LR+20
+       push    ?LR+22
+       push    ?LR+24
+       push    ?LR+26
+       push    ?LR+28
+       push    ?LR+30
+       st      SP,[?GR+2]              ; save old stack pointer
+       ; fall-thru
+
+AsmReplaceContext:
+       ld      SP,?GR+0                ; load new stack pointer
+
+; restore all registers
+       pop     ?LR+30
+       pop     ?LR+28
+       pop     ?LR+26
+       pop     ?LR+24
+       pop     ?LR+22
+       pop     ?LR+20
+       pop     ?LR+18
+       pop     ?LR+16
+       pop     ?LR+14
+       pop     ?LR+12
+       pop     ?LR+10
+       pop     ?LR+8
+       pop     ?LR+6
+       pop     ?LR+4
+       pop     ?LR+2
+       pop     ?LR+0
+
+; restore execution in new context
+       ret
+
+       END