diff options
Diffstat (limited to 'nuttx/arch/z80/src/common/up_head.asm')
| -rw-r--r-- | nuttx/arch/z80/src/common/up_head.asm | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/nuttx/arch/z80/src/common/up_head.asm b/nuttx/arch/z80/src/common/up_head.asm index 272754e05..e8132e37f 100644 --- a/nuttx/arch/z80/src/common/up_head.asm +++ b/nuttx/arch/z80/src/common/up_head.asm @@ -52,13 +52,16 @@ XCPT_BC == 14 ; Saved BC register
XCPT_I == 16 ; Saved I w/interrupt state in carry
+ ; Default stack base (needs to be fixed)
+
+ STACK_BASE == 0xffff
+
;**************************************************************************
; Global symbols used
;**************************************************************************
.globl _os_start ; OS entry point
- .globl _idle_stack ; Top of allocated stack region
- .globl _up_irqdecode ; Interrupt decoding logic
+ .globl _up_decodeirq ; Interrupt decoding logic
;**************************************************************************
; Reset entry point
@@ -68,10 +71,10 @@ .org 0x0000
.globl _os_start
- di ; Disable interrupts
- ld SP, #_idle_stack ; Set stack pointer
- im 1 ; Set interrupt mode 1
- jp _os_start ; jump to the OS entry point
+ di ; Disable interrupts
+ ld SP, #STACK_BASE ; Set stack pointer
+ im 1 ; Set interrupt mode 1
+ jp _os_start ; jump to the OS entry point
forever:
jp forever
@@ -113,7 +116,7 @@ forever: ld hl, #0 ; Argument is the beginning of the reg structure
add hl, sp
push hl
- call _up_irqdecode ; Decode the IRQ
+ call _up_decodeirq ; Decode the IRQ
; Restore registers. HL points to the beginning of the reg structure to restore
|