| # setjmp/longjmp for FR30. The jmpbuf looks like this: | |
| # | |
| # Register jmpbuf offset | |
| # R8 0x00 | |
| # R9 0x04 | |
| # R10 0x08 | |
| # R11 0x0c | |
| # R12 0x10 | |
| # R13 0x14 | |
| # R14 (FP) 0x18 | |
| # R15 (SP) 0x1c | |
| # RP 0x20 | |
| .macro save reg | |
| st \reg,@r4 | |
| add #4,r4 | |
| .endm | |
| .macro restore reg | |
| ld @r4,\reg | |
| add #4,r4 | |
| .endm | |
| .text | |
| .global setjmp | |
| setjmp: | |
| save r8 | |
| save r9 | |
| save r10 | |
| save r11 | |
| save r12 | |
| save r13 | |
| save r14 | |
| save r15 | |
| mov RP,r5 | |
| st r5,@r4 | |
| # Return 0 to caller. | |
| ldi:8 #0,r4 | |
| ret | |
| .global longjmp | |
| longjmp: | |
| restore r8 | |
| restore r9 | |
| restore r10 | |
| restore r11 | |
| restore r12 | |
| restore r13 | |
| restore r14 | |
| restore r15 | |
| ld @r4,r4 | |
| mov r4,RP | |
| # If caller attempted to return 0, return 1 instead. | |
| mov r5,r4 | |
| or r4,r4 | |
| bne 1f | |
| ldi:8 #1,r4 | |
| 1: | |
| ret | |