111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/******************************************************************************
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* Copyright (c) 2004, 2008 IBM Corporation
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* All rights reserved.
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* This program and the accompanying materials
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* are made available under the terms of the BSD License
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* which accompanies this distribution, and is available at
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* http://www.opensource.org/licenses/bsd-license.php
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*
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* Contributors:
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* IBM Corporation - initial implementation
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*****************************************************************************/
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#include <cpu.h>
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/* the exception frame should be page aligned
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* the_exception_frame is used by the handler to store a copy of all
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* registers after an exception; this copy can then be used by paflof's
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* exception handler to printout a register dump */
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cell the_exception_frame[0x400 / CELLSIZE] __attribute__ ((aligned(PAGE_SIZE)));;
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/* the_client_frame is the register save area when starting a client */
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cell the_client_frame[0x1000 / CELLSIZE] __attribute__ ((aligned(0x100)));
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cell the_client_stack[0x8000 / CELLSIZE] __attribute__ ((aligned(0x100)));
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/* THE forth stack */
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cell the_data_stack[0x2000 / CELLSIZE] __attribute__ ((aligned(0x100)));
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/* the forth return stack */
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cell the_return_stack[0x2000 / CELLSIZE] __attribute__ ((aligned(0x100)));
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/* forth stack and return-stack pointers */
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cell *restrict dp;
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cell *restrict rp;
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/* terminal input buffer */
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cell the_tib[0x1000 / CELLSIZE] __attribute__ ((aligned(0x100)));
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/* temporary string buffers */
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char the_pockets[NUMPOCKETS * POCKETSIZE] __attribute__ ((aligned(0x100)));
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cell the_comp_buffer[0x1000 / CELLSIZE] __attribute__ ((aligned(0x100)));
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cell the_heap[HEAP_SIZE / CELLSIZE] __attribute__ ((aligned(0x1000)));
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cell *the_heap_start = &the_heap[0];
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cell *the_heap_end = &the_heap[HEAP_SIZE / CELLSIZE];
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extern void io_putchar(unsigned char);
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static unsigned long __attribute__((noinline))
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call_c(cell arg0, cell arg1, cell arg2, cell entry)
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{
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register unsigned long r3 asm("r3") = arg0.u;
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register unsigned long r4 asm("r4") = arg1.u;
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register unsigned long r5 asm("r5") = arg2.u;
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register unsigned long r6 = entry.u ;
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asm volatile("mflr 31 ; mtctr %4 ; bctrl ; mtlr 31"
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: "=r" (r3)
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: "r" (r3), "r" (r4), "r" (r5), "r" (r6)
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: "ctr", "r6", "r7", "r8", "r9", "r10", "r11",
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"r12", "r13", "r31", "lr", "cc");
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return r3;
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}
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long
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writeLogByte_wrapper(long x, long y)
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{
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unsigned long result;
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SET_CI;
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result = writeLogByte(x, y);
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CLR_CI;
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return result;
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}
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/**
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* Standard write function for the libc.
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*
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* @param fd file descriptor (should always be 1 or 2)
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* @param buf pointer to the array with the output characters
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* @param count number of bytes to be written
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* @return the number of bytes that have been written successfully
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*/
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int
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write(int fd, const void *buf, int count)
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{
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int i;
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char *ptr = (char *)buf;
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if (fd != 1 && fd != 2)
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return 0;
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for (i = 0; i < count; i++) {
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if (*ptr == '\n')
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io_putchar('\r');
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io_putchar(*ptr++);
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}
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return i;
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}
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/* This should probably be temporary until a better solution is found */
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void
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asm_cout(long Character, long UART, long NVRAM __attribute__((unused)))
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{
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if (UART)
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io_putchar(Character);
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}
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