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Last change
on this file since 653 was
444,
checked in by satin@…, 7 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
824 bytes
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| 1 | /* reentrant system call template */ |
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| 2 | |
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| 3 | /* Lots of system calls are trivial functions, so we build their source files |
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| 4 | from a template. New syscalls can be added simply by editing the |
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| 5 | Makefile! |
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| 6 | |
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| 7 | The system calls aren't necessarily reentrant. If we were being used in |
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| 8 | an embedded system they could be. Reentrant syscalls are also used, |
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| 9 | however, to provide ANSI C namespace clean access to the host o/s. |
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| 10 | |
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| 11 | Usage: Compile this file with "func" set to the name of the syscall. */ |
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| 12 | |
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| 13 | #include "syscallasm.h" |
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| 14 | |
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| 15 | #define concat(a,b) a##b |
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| 16 | #define concat3(a,b,c) a##b##c |
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| 17 | #define makesys(a) concat (SYS_, a) |
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| 18 | #define make_r_fn(a) concat3 (_, a, _r) |
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| 19 | |
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| 20 | /* The leading _'s get turned into #'s by the Makefile. */ |
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| 21 | |
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| 22 | _ifdef REENT |
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| 23 | defsyscall_r (make_r_fn (func), makesys (func)) |
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| 24 | _else |
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| 25 | defsyscall (func, makesys (func)) |
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| 26 | _endif |
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