projects / binutils.git / blame
| Commit | Line | Data |
|---|---|---|
| 547b869a CV |
1 | comment "subroutine prologue" |
| 2 | .macro gdbasm_enter | |
| 3 | mov.w r6,@-r7 | |
| 4 | mov.w r7,r6 | |
| 5 | subs #2,r7 | |
| 6 | .endm | |
| 7 | ||
| 8 | comment "subroutine epilogue" | |
| 9 | .macro gdbasm_leave | |
| 10 | adds #2,r7 | |
| 11 | mov.w @r7+,r6 | |
| 12 | rts | |
| 13 | .endm | |
| 14 | ||
| 15 | .macro gdbasm_call subr | |
| 16 | jsr @\subr | |
| 17 | .endm | |
| 18 | ||
| 19 | .macro gdbasm_several_nops | |
| 20 | nop | |
| 21 | nop | |
| 22 | nop | |
| 23 | nop | |
| 24 | .endm | |
| 25 | ||
| 26 | comment "exit (0)" | |
| 27 | .macro gdbasm_exit0 | |
| 28 | mov.w #0xdead,r1 | |
| 29 | mov.w #0xbeef,r2 | |
| 30 | mov.w #0,r0 | |
| 31 | sleep | |
| 32 | .endm | |
| 33 | ||
| 34 | comment "crt0 startup" | |
| 35 | .macro gdbasm_startup | |
| 36 | .section .stack | |
| 37 | _stack: .long 1 | |
| 38 | .section .text | |
| 39 | .global _start | |
| 40 | _start: | |
| 41 | mov.w #0,r6 | |
| 42 | mov.w #_stack,sp ; or mov.l #_stack,sp | |
| 43 | mov.w #_edata,r0 | |
| 44 | mov.w #_end,r1 | |
| 45 | sub.w r2,r2 | |
| 46 | .loop: mov.w r2,@r0 | |
| 47 | adds #2,r0 | |
| 48 | cmp r1,r0 | |
| 49 | blo .loop | |
| 50 | .endm |