2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
401 lines
8.9 KiB
C
401 lines
8.9 KiB
C
/* $NetBSD: citrus_mapper_zone.c,v 1.4 2003/07/12 15:39:21 tshiozak Exp $ */
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/*-
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* Copyright (c)2003 Citrus Project,
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: citrus_mapper_zone.c,v 1.4 2003/07/12 15:39:21 tshiozak Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/queue.h>
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#include "citrus_namespace.h"
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#include "citrus_types.h"
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#include "citrus_bcs.h"
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#include "citrus_module.h"
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#include "citrus_region.h"
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#include "citrus_memstream.h"
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#include "citrus_mmap.h"
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#include "citrus_hash.h"
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#include "citrus_mapper.h"
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#include "citrus_mapper_zone.h"
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/* ---------------------------------------------------------------------- */
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_CITRUS_MAPPER_DECLS(mapper_zone);
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_CITRUS_MAPPER_DEF_OPS(mapper_zone);
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/* ---------------------------------------------------------------------- */
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struct _zone {
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u_int32_t z_begin;
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u_int32_t z_end;
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};
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struct _citrus_mapper_zone {
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struct _zone mz_row;
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struct _zone mz_col;
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int mz_col_bits;
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int32_t mz_row_offset;
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int32_t mz_col_offset;
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};
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struct _parse_state {
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enum { S_BEGIN, S_OFFSET } ps_state;
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union {
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u_int32_t u_imm;
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int32_t s_imm;
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struct _zone zone;
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} u;
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#define ps_u_imm u.u_imm
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#define ps_s_imm u.s_imm
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#define ps_zone u.zone
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int ps_top;
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};
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int
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_citrus_mapper_zone_mapper_getops(struct _citrus_mapper_ops *ops,
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size_t lenops, uint32_t expected_version)
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{
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if (expected_version<_CITRUS_MAPPER_ABI_VERSION || lenops<sizeof(*ops))
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return EINVAL;
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memcpy(ops, &_citrus_mapper_zone_mapper_ops,
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sizeof(_citrus_mapper_zone_mapper_ops));
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return 0;
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}
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#define BUFSIZE 20
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#define T_ERR 0x100
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#define T_IMM 0x101
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static int
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get_imm(struct _memstream *ms, struct _parse_state *ps)
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{
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int sign = 0;
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int c, i;
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char buf[BUFSIZE+1], *p;
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for (i=0; i<BUFSIZE; i++) {
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retry:
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c = _memstream_peek(ms);
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if (i==0) {
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if (sign == 0 && (c == '+' || c == '-')) {
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sign = c;
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_memstream_getc(ms);
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goto retry;
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} else if (!_bcs_isdigit(c))
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break;
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} else if (!_bcs_isxdigit(c))
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if (!(i==1 && c == 'x'))
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break;
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buf[i] = _memstream_getc(ms);
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}
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buf[i] = '\0';
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ps->ps_u_imm = strtoul(buf, &p, 0);
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if ((p-buf) != i)
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return T_ERR;
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if (sign == '-')
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ps->ps_u_imm = (unsigned long)-(long)ps->ps_u_imm;
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return T_IMM;
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}
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static int
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get_tok(struct _memstream *ms, struct _parse_state *ps)
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{
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int c;
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loop:
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c = _memstream_peek(ms);
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if (c==0x00)
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return EOF;
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if (_bcs_isspace(c)) {
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_memstream_getc(ms);
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goto loop;
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}
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switch (ps->ps_state) {
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case S_BEGIN:
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switch (c) {
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case ':':
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case '-':
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case '/':
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_memstream_getc(ms);
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return c;
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9':
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return get_imm(ms, ps);
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}
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break;
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case S_OFFSET:
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switch (c) {
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case '/':
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_memstream_getc(ms);
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return c;
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case '+':
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case '-':
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9':
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return get_imm(ms, ps);
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}
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break;
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}
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return T_ERR;
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}
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static int
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parse_zone(struct _memstream *ms, struct _parse_state *ps, struct _zone *z)
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{
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if (get_tok(ms, ps) != T_IMM)
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return -1;
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z->z_begin = ps->ps_u_imm;
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if (get_tok(ms, ps) != '-')
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return -1;
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if (get_tok(ms, ps) != T_IMM)
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return -1;
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z->z_end = ps->ps_u_imm;
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if (z->z_begin > z->z_end)
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return -1;
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return 0;
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}
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static int
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check_rowcol(struct _zone *z, int32_t ofs, uint32_t maxval)
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{
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u_int32_t remain;
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if (maxval != 0 && z->z_end >= maxval)
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return -1;
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if (ofs > 0) {
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if (maxval == 0) {
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/* this should 0x100000000 - z->z_end */
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if (z->z_end == 0) {
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remain = 0xFFFFFFFF;
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} else {
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remain = 0xFFFFFFFF - z->z_end + 1;
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}
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} else
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remain = maxval - z->z_end;
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if ((u_int32_t)ofs > remain)
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return -1;
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} else if (ofs < 0) {
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if (z->z_begin < (u_int32_t)-ofs)
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return -1;
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}
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return 0;
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}
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static int
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parse_var(struct _citrus_mapper_zone *mz, struct _memstream *ms)
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{
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struct _parse_state ps;
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int ret, isrc;
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uint32_t rowmax, colmax;
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ps.ps_state = S_BEGIN;
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if (parse_zone(ms, &ps, &mz->mz_col))
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return -1;
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ret = get_tok(ms, &ps);
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if (ret == '/') {
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/* rowzone / colzone / bits */
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isrc = 1;
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mz->mz_row = mz->mz_col;
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if (parse_zone(ms, &ps, &mz->mz_col))
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return -1;
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if (get_tok(ms, &ps) != '/')
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return -1;
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if (get_tok(ms, &ps) != T_IMM)
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return -1;
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mz->mz_col_bits = ps.ps_u_imm;
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if (mz->mz_col_bits<0 || mz->mz_col_bits>32)
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return -1;
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ret = get_tok(ms, &ps);
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} else {
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/* colzone */
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isrc = 0;
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mz->mz_col_bits = 32;
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mz->mz_row.z_begin = mz->mz_row.z_end = 0;
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}
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if (ret == ':') {
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/* offset */
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ps.ps_state = S_OFFSET;
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if (get_tok(ms, &ps) != T_IMM)
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return -1;
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mz->mz_col_offset = ps.ps_s_imm;
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if (isrc) {
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/* row/col */
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mz->mz_row_offset = mz->mz_col_offset;
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if (get_tok(ms, &ps) != '/')
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return -1;
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if (get_tok(ms, &ps) != T_IMM)
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return -1;
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mz->mz_col_offset = ps.ps_s_imm;
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} else
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mz->mz_row_offset = 0;
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ret = get_tok(ms, &ps);
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}
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if (ret != EOF)
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return -1;
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/* sanity check */
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if (mz->mz_col_bits==32)
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colmax = 0;
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else
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colmax = 1 << mz->mz_col_bits;
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if (mz->mz_col_bits==0)
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rowmax = 0;
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else
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rowmax = 1 << (32-mz->mz_col_bits);
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if (check_rowcol(&mz->mz_col, mz->mz_col_offset, colmax))
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return -1;
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if (check_rowcol(&mz->mz_row, mz->mz_row_offset, rowmax))
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return -1;
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return 0;
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}
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static int
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/*ARGSUSED*/
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_citrus_mapper_zone_mapper_init(struct _citrus_mapper_area *__restrict ma,
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struct _citrus_mapper * __restrict cm,
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const char * __restrict dir,
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const void * __restrict var, size_t lenvar,
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struct _citrus_mapper_traits * __restrict mt,
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size_t lenmt)
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{
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struct _citrus_mapper_zone *mz;
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struct _memstream ms;
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struct _region r;
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_DIAGASSERT(cm && dir && mt);
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if (lenmt<sizeof(*mt))
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return EINVAL;
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mz = malloc(sizeof(*mz));
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if (mz == NULL)
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return errno;
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mz->mz_col.z_begin = mz->mz_col.z_end = 0;
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mz->mz_row.z_begin = mz->mz_row.z_end = 0;
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mz->mz_col_bits = 0;
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mz->mz_row_offset = 0;
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mz->mz_col_offset = 0;
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_region_init(&r, (void *)var, lenvar);
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_memstream_bind(&ms, &r);
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if (parse_var(mz, &ms)) {
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free(mz);
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return EINVAL;
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}
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cm->cm_closure = mz;
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mt->mt_src_max = mt->mt_dst_max = 1; /* 1:1 converter */
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mt->mt_state_size = 0; /* stateless */
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return 0;
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}
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static void
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/*ARGSUSED*/
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_citrus_mapper_zone_mapper_uninit(struct _citrus_mapper *cm)
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{
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}
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static int
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/*ARGSUSED*/
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_citrus_mapper_zone_mapper_convert(struct _citrus_mapper * __restrict cm,
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_citrus_index_t * __restrict dst,
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_citrus_index_t src, void * __restrict ps)
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{
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u_int32_t row, col;
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struct _citrus_mapper_zone *mz = cm->cm_closure;
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if (mz->mz_col_bits == 32) {
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col = src;
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row = 0;
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if (col < mz->mz_col.z_begin || col > mz->mz_col.z_end)
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return _CITRUS_MAPPER_CONVERT_NONIDENTICAL;
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if (mz->mz_col_offset>0)
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col += (u_int32_t)mz->mz_col_offset;
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else
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col -= (u_int32_t)-mz->mz_col_offset;
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*dst = col;
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} else {
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col = src & (((u_int32_t)1<<mz->mz_col_bits)-1);
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row = src >> mz->mz_col_bits;
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if (row < mz->mz_row.z_begin || row > mz->mz_row.z_end ||
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col < mz->mz_col.z_begin || col > mz->mz_col.z_end)
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return _CITRUS_MAPPER_CONVERT_NONIDENTICAL;
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if (mz->mz_col_offset>0)
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col += (u_int32_t)mz->mz_col_offset;
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else
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col -= (u_int32_t)-mz->mz_col_offset;
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if (mz->mz_row_offset>0)
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row += (u_int32_t)mz->mz_row_offset;
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else
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row -= (u_int32_t)-mz->mz_row_offset;
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*dst = col | (row << mz->mz_col_bits);
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}
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return _CITRUS_MAPPER_CONVERT_SUCCESS;
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}
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static void
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/*ARGSUSED*/
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_citrus_mapper_zone_mapper_init_state(struct _citrus_mapper * __restrict cm,
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void * __restrict ps)
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{
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}
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