fe45ee7ed0
On ARM we can't yet globally map pages into every process. So now that we correctly receive the pointer to the globally mapped kern_info struct, we have to ignore it on ARM because attempting to dereference the pointer yields a segfault.
35 lines
862 B
C
35 lines
862 B
C
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#include <stdio.h>
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#include <minix/ipc.h>
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/* Minix kernel info, IPC functions pointers */
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struct minix_kerninfo *_minix_kerninfo = NULL;
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void __minix_init(void) __attribute__((__constructor__, __used__));
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struct minix_ipcvecs _minix_ipcvecs = {
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.sendrec = _sendrec_orig,
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.send = _send_orig,
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.notify = _notify_orig,
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.senda = _senda_orig,
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.sendnb = _sendnb_orig,
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.receive = _receive_orig,
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.do_kernel_call = _do_kernel_call_orig,
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};
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void __minix_init(void)
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{
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#ifdef __arm__
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_minix_kerninfo = NULL;
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#else
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if((_minix_kernel_info_struct(&_minix_kerninfo)) != 0
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|| _minix_kerninfo->kerninfo_magic != KERNINFO_MAGIC) {
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_minix_kerninfo = NULL;
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} else if((_minix_kerninfo->ki_flags & MINIX_KIF_IPCVECS) &&
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_minix_kerninfo->minix_ipcvecs) {
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_minix_ipcvecs = *_minix_kerninfo->minix_ipcvecs;
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}
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#endif /* __arm__ */
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}
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