| 1 | # (c) 2020 Aaron Taylor <ataylor at subgeniuskitty dot com> |
| 2 | # See License.txt file for copyright and license details. |
| 3 | |
| 4 | .globl _int4_asm_handler |
| 5 | .globl _int4_c_handler |
| 6 | |
| 7 | _int4_asm_handler: |
| 8 | # GCC appears to be using the same calling convention documented in the |
| 9 | # original UNIX manuals. Most of these register saves are probably |
| 10 | # unnecessary. |
| 11 | mov r0,-(sp) |
| 12 | mov r1,-(sp) |
| 13 | mov r2,-(sp) |
| 14 | mov r3,-(sp) |
| 15 | mov r4,-(sp) |
| 16 | mov r5,-(sp) |
| 17 | jsr pc, _int4_c_handler |
| 18 | mov (sp)+,r5 |
| 19 | mov (sp)+,r4 |
| 20 | mov (sp)+,r3 |
| 21 | mov (sp)+,r2 |
| 22 | mov (sp)+,r1 |
| 23 | mov (sp)+,r0 |
| 24 | rti |