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Last change
on this file since 656 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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