fd142e5ec4
the changes to syscall_ret are mostly no-ops in the generated code, just cleanup of type issues and removal of some implementation-defined behavior. the one exception is the change in the comparison value, which is fixed so that 0xf...f000 (which in principle could be a valid return value for mmap, although probably never in reality) is not treated as an error return.
9 lines
203 B
C
9 lines
203 B
C
#include <stdint.h>
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#include "syscall.h"
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void *sbrk(intptr_t inc)
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{
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unsigned long cur = syscall(SYS_brk, 0);
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if (inc && syscall(SYS_brk, cur+inc) != cur+inc) return (void *)-1;
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return (void *)cur;
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}
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