Last change
on this file since 548 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:
1.0 KB
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Line | |
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1 | ! Set errno. |
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2 | ! This function is called by all the syscall stubs. |
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3 | ! |
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4 | ! FIXME: We assume errno is the first member of struct _reent. |
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5 | ! Not sure what to do about this. |
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6 | |
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7 | #include "syscallasm.h" |
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8 | |
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9 | DATA_SECTION |
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10 | ALIGN (4) |
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11 | GLOBAL (ASM_SYMBOL (errno)) ! FIXME: ASM_PRIVATE_SYMBOL ? |
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12 | ASM_SYMBOL (errno): |
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13 | WORD (0) |
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14 | |
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15 | TEXT_SECTION |
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16 | ALIGN (4) |
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17 | |
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18 | GLOBAL (ASM_PRIVATE_SYMBOL (cerror)) |
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19 | ASM_PRIVATE_SYMBOL (cerror): |
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20 | sethi %hi (ASM_SYMBOL (errno)),%g1 |
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21 | st %o0,[%g1+%lo (ASM_SYMBOL (errno))] |
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22 | jmpl %o7+8,%g0 |
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23 | mov -1,%o0 |
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24 | |
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25 | GLOBAL (ASM_PRIVATE_SYMBOL (cerror_r)) |
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26 | ASM_PRIVATE_SYMBOL (cerror_r): |
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27 | st %o0,[%o1] |
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28 | jmpl %o7+8,%g0 |
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29 | mov -1,%o0 |
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30 | |
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31 | ! Since all system calls need this file, we put various state globals |
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32 | ! here as well. |
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33 | |
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34 | DATA_SECTION |
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35 | |
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36 | ! CURBRK contains the current top of allocated space. |
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37 | ! END is a private symbol in svr4, but a public one in sunos4. |
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38 | ! FIXME: CURBRK is 4 bytes for now. |
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39 | |
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40 | ALIGN (4) |
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41 | GLOBAL (ASM_PRIVATE_SYMBOL (curbrk)) |
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42 | ASM_PRIVATE_SYMBOL (curbrk): |
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43 | #ifdef SVR4 |
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44 | WORD (ASM_PRIVATE_SYMBOL (end)) |
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45 | #else |
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46 | WORD (ASM_SYMBOL (end)) |
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47 | #endif |
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