Last change
on this file since 467 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
631 bytes
|
Line | |
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1 | ;; |
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2 | ;; The errno will be in r5 if r11 is -1. |
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3 | ;; |
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4 | .text |
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5 | .global __trap0 |
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6 | __trap0: |
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7 | ;; non-leaf function so need to create stack frame to |
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8 | ;; store ra and fp |
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9 | subi sp, sp, #16 |
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10 | stw ra, sp, #12 |
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11 | or r0, r0, r0 ;; nop |
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12 | stw fp, sp, #8 |
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13 | or fp, sp, sp |
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14 | stw r5, sp, #4 |
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15 | or r0, r0, r0 ;; nop |
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16 | stw r6, sp, #0 |
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17 | addi r6, r0, #$-1 |
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18 | si r14 |
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19 | or r0, r0, r0 ;; nop |
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20 | brne r11, r6, .L0 |
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21 | ldui r6, #%hi16(errno) |
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22 | addui r6, r6, #%lo16(errno) |
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23 | stw r5, r6, #0 |
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24 | or r0, r0, r0 ;; nop |
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25 | .L0: |
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26 | ldw r6, sp, #0 |
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27 | or r0, r0, r0 ;; nop |
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28 | ldw r5, sp, #4 |
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29 | or r0, r0, r0 ;; nop |
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30 | ldw ra, sp, #12 |
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31 | or r0, r0, r0 ;; nop |
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32 | ldw fp, sp, #8 |
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33 | jal r0, r14 |
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34 | addi sp, sp, #16 |
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