4f294c247f
This patch mainly copies and modifies files existing in the current libc implementing minix specific functions. To keep consisten with the NetBSD libc, we remove namespace stubs and we use "namespace.h" and weak links.
81 lines
2.0 KiB
ArmAsm
81 lines
2.0 KiB
ArmAsm
#include <minix/ipcconst.h>
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#include <machine/asm.h>
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IPCVEC = 33 /* ipc trap to kernel */
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KERVEC = 32 /* syscall trap to kernel */
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SRC_DST = 8 /* source/ destination process */
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MESSAGE = 12 /* message pointer */
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STATUS = 16 /* status pointer */
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/**========================================================================* */
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/* IPC assembly routines * */
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/**========================================================================* */
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/* all message passing routines save ebx, but destroy eax and ecx. */
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ENTRY(_send)
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push %ebp
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movl %esp, %ebp
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push %ebx
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movl SRC_DST(%ebp), %eax /* eax = dest-src */
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movl MESSAGE(%ebp), %ebx /* ebx = message pointer */
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movl $SEND, %ecx /* _send(dest, ptr) */
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int $IPCVEC /* trap to the kernel */
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pop %ebx
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pop %ebp
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ret
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ENTRY(_receive)
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push %ebp
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movl %esp, %ebp
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push %ebx
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movl SRC_DST(%ebp), %eax /* eax = dest-src */
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movl MESSAGE(%ebp), %ebx /* ebx = message pointer */
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movl $RECEIVE, %ecx /* _receive(src, ptr) */
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int $IPCVEC /* trap to the kernel */
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movl STATUS(%ebp), %ecx /* ecx = status pointer */
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movl %ebx, (%ecx)
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pop %ebx
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pop %ebp
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ret
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ENTRY(_sendrec)
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push %ebp
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movl %esp, %ebp
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push %ebx
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movl SRC_DST(%ebp), %eax /* eax = dest-src */
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movl MESSAGE(%ebp), %ebx /* ebx = message pointer */
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movl $SENDREC, %ecx /* _sendrec(srcdest, ptr) */
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int $IPCVEC /* trap to the kernel */
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pop %ebx
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pop %ebp
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ret
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ENTRY(_notify)
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push %ebp
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movl %esp, %ebp
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push %ebx
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movl SRC_DST(%ebp), %eax /* eax = destination */
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movl $NOTIFY, %ecx /* _notify(srcdst) */
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int $IPCVEC /* trap to the kernel */
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pop %ebx
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pop %ebp
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ret
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ENTRY(_sendnb)
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push %ebp
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movl %esp, %ebp
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push %ebx
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movl SRC_DST(%ebp), %eax /* eax = dest-src */
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movl MESSAGE(%ebp), %ebx /* ebx = message pointer */
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movl $SENDNB, %ecx /* _sendnb(dest, ptr) */
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int $IPCVEC /* trap to the kernel */
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pop %ebx
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pop %ebp
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ret
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ENTRY(_do_kernel_call)
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/* pass the message pointer to kernel in the %eax register */
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movl 4(%esp), %eax
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int $KERVEC
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ret
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