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c0bb4cd3cd
This change will be integrated but ignored (-ay) to the gg-epcore/union sources, so that they retain HopeNames. Copied from Perforce Change: 24911 ServerID: perforce.ravenbrook.com
140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
/* impl.c.fmtdytst: DYLAN FORMAT TEST CODE
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*
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* $Id$
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* Copyright (c) 2001 Ravenbrook Limited.
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*
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* .readership: MPS developers, Dylan developers.
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*/
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#include "fmtdy.h"
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#include "mps.h"
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#include "testlib.h"
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#ifdef MPS_BUILD_MV
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/* windows.h causes warnings about "unreferenced inline function */
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/* has been removed". */
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#pragma warning(disable: 4514)
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#endif /* MPS_BUILD_MV */
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#ifdef MPS_PF_SUS8LC
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/* .hack.malloc: builder.lc (LCC) uses Sun's header files. Sun's
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* stdlib.h is broken, as it has an incorrect declaration of malloc.
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* We fix that here in a very hacky way.
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*/
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#define malloc(x) (void *)malloc(x)
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#endif /* MPS_PF_SUS8LC */
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static mps_word_t *ww = NULL;
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static mps_word_t *tvw;
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static mps_word_t dylan_make_WV(mps_word_t version, mps_word_t vb,
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mps_word_t es, mps_word_t vf)
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{
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assert((version & ((1 << 8) - 1)) == version);
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assert((vb & ((1 << 8) - 1)) == vb);
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assert((es & ((1 << 5) - 1)) == es);
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assert((vf & ((1 << 3) - 1)) == vf);
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/* VERSION- ... VB------ reserved ES---VF- */
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return((version << (MPS_WORD_WIDTH - 8)) |
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(vb << 16) |
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(es << 3) |
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vf);
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}
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mps_res_t dylan_init(mps_addr_t addr, size_t size,
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mps_addr_t *refs, size_t nr_refs)
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{
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/* Make sure the size is aligned. */
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assert((size & (ALIGN-1)) == 0);
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if(ww == NULL) {
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ww = malloc(sizeof(mps_word_t) * (BASIC_WRAPPER_SIZE + 1));
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if(ww == NULL) return MPS_RES_MEMORY;
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tvw = malloc(sizeof(mps_word_t) * BASIC_WRAPPER_SIZE);
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if(tvw == NULL) {
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free(ww);
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return MPS_RES_MEMORY;
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}
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/* Build a wrapper wrapper. */
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ww[WW] = (mps_word_t)ww;
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ww[WC] = (mps_word_t)ww; /* dummy class */
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ww[WM] = (1 << 2) | 1; /* dummy subtype_mask */
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ww[WF] = ((WS - 1) << 2) | 2;
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ww[WV] = dylan_make_WV(2, 0, 0, 0);
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ww[WS] = (1 << 2) | 1;
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ww[WP] = 1;
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/* Build a wrapper for traceable vectors. */
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tvw[WW] = (mps_word_t)ww;
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tvw[WC] = (mps_word_t)ww; /* dummy class */
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tvw[WM] = (1 << 2) | 1; /* dummy subtype_mask */
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tvw[WF] = 0; /* no fixed part */
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tvw[WV] = dylan_make_WV(2, 0, 0, 2); /* traceable variable part */
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tvw[WS] = 1; /* no patterns */
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}
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/* If there is enough room, make a vector, otherwise just */
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/* make a padding object. */
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if(size >= sizeof(mps_word_t) * 2) {
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mps_word_t *p = (mps_word_t *)addr;
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mps_word_t i, t = (size / sizeof(mps_word_t)) - 2;
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p[0] = (mps_word_t)tvw; /* install vector wrapper */
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p[1] = (t << 2) | 1; /* tag the vector length */
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for(i = 0; i < t; ++i) {
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mps_word_t r = rnd();
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if(r & 1)
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p[2+i] = ((r & ~(mps_word_t)3) | 1); /* random int */
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else
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p[2+i] = (mps_word_t)refs[(r >> 1) % nr_refs]; /* random ptr */
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}
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} else
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dylan_pad(addr, size);
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return MPS_RES_OK;
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}
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void dylan_write(mps_addr_t addr, mps_addr_t *refs, size_t nr_refs)
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{
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mps_word_t *p = (mps_word_t *)addr;
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mps_word_t t = p[1] >> 2;
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/* If the object is a vector, update a random entry. */
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if(p[0] == (mps_word_t)tvw && t > 0) {
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mps_word_t r = rnd();
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size_t i = 2 + (rnd() % t);
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if(r & 1)
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p[i] = ((r & ~(mps_word_t)3) | 1); /* random int */
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else
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p[i] = (mps_word_t)refs[(r >> 1) % nr_refs]; /* random ptr */
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}
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}
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mps_addr_t dylan_read(mps_addr_t addr)
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{
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mps_word_t *p = (mps_word_t *)addr;
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/* If the object is a vector, return a random entry. */
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if(p[0] == (mps_word_t)tvw) {
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mps_word_t t = p[1] >> 2;
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if(t > 0)
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return (mps_addr_t)p[2 + (rnd() % t)];
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}
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return addr;
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}
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