comment "subroutine prologue"
- .macro enter
+ .macro gdbasm_enter
+ st r11,@-sp
st r13,@-sp
+ mv r11,sp
.endm
comment "subroutine epilogue"
- .macro leave
- ld r13,@sp+
- jmp r13
+ .macro gdbasm_leave
+ add3 sp,r11,0
+ ld r13,@sp+
+ ld r11,@sp+
+ jmp r13
.endm
- .macro call subr
+ .macro gdbasm_call subr
bl \subr
.endm
- .macro several_nops
+ .macro gdbasm_several_nops
nop
nop
nop
.endm
comment "exit (0)"
- .macro exit0
+ .macro gdbasm_exit0
ldi r4, 1
ldi r0, 0
trap 15
.endm
comment "crt0 startup"
- .macro startup
+ .macro gdbasm_startup
+; R14 always contains memory base address (0)
+
+ ldi r14,0
+
+; Set the USER and SYSTEM stack pointers.
+
+ ldi r0, 0 ; zero arguments
+ ldi r1, 0
+ mvtc r0, psw ; select SPI and set it
+ ldi sp, _stack
+ ldi r10, 0x8000 ; select SPU/FP and set it
+ mvtc r10, psw || ldi r11, 0; clear stack frame
+ ldi sp, _stack - 0x200
+ ldi r13, 0
+
+ st r11, @-sp
+ st r13, @-sp
+; mv r11, sp
+
.endm