/[gxemul]/trunk/src/debugger/debugger_expr.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /trunk/src/debugger/debugger_expr.c

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Revision 32 - (show annotations)
Mon Oct 8 16:20:58 2007 UTC (16 years, 5 months ago) by dpavlin
File MIME type: text/plain
File size: 10173 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1421 2006/11/06 05:32:37 debug Exp $
20060816	Adding a framework for emulated/virtual timers (src/timer.c),
		using only setitimer().
		Rewriting the mc146818 to use the new timer framework.
20060817	Adding a call to gettimeofday() every now and then (once every
		second, at the moment) to resynch the timer if it drifts.
		Beginning to convert the ISA timer interrupt mechanism (8253
		and 8259) to use the new timer framework.
		Removing the -I command line option.
20060819	Adding the -I command line option again, with new semantics.
		Working on Footbridge timer interrupts; NetBSD/NetWinder and
		NetBSD/CATS now run at correct speed, but unfortunately with
		HUGE delays during bootup.
20060821	Some minor m68k updates. Adding the first instruction: nop. :)
		Minor Alpha emulation updates.
20060822	Adding a FreeBSD development specific YAMON environment
		variable ("khz") (as suggested by Bruce M. Simpson).
		Moving YAMON environment variable initialization from
		machine_evbmips.c into promemul/yamon.c, and adding some more
		variables.
		Continuing on the LCA PCI bus controller (for Alpha machines).
20060823	Continuing on the timer stuff: experimenting with MIPS count/
		compare interrupts connected to the timer framework.
20060825	Adding bogus SCSI commands 0x51 (SCSICDROM_READ_DISCINFO) and
		0x52 (SCSICDROM_READ_TRACKINFO) to the SCSI emulation layer,
		to allow NetBSD/pmax 4.0_BETA to be installed from CDROM.
		Minor updates to the LCA PCI controller.
20060827	Implementing a CHIP8 cpu mode, and a corresponding CHIP8
		machine, for fun. Disassembly support for all instructions,
		and most of the common instructions have been implemented: mvi,
		mov_imm, add_imm, jmp, rand, cls, sprite, skeq_imm, jsr,
		skne_imm, bcd, rts, ldr, str, mov, or, and, xor, add, sub,
		font, ssound, sdelay, gdelay, bogus skup/skpr, skeq, skne.
20060828	Beginning to convert the CHIP8 cpu in the CHIP8 machine to a
		(more correct) RCA 180x cpu. (Disassembly for all 1802
		instructions has been implemented, but no execution yet, and
		no 1805 extended instructions.)
20060829	Minor Alpha emulation updates.
20060830	Beginning to experiment a little with PCI IDE for SGI O2.
		Fixing the cursor key mappings for MobilePro 770 emulation.
		Fixing the LK201 warning caused by recent NetBSD/pmax.
		The MIPS R41xx standby, suspend, and hibernate instructions now
		behave like the RM52xx/MIPS32/MIPS64 wait instruction.
		Fixing dev_wdc so it calculates correct (64-bit) offsets before
		giving them to diskimage_access().
20060831	Continuing on Alpha emulation (OSF1 PALcode).
20060901	Minor Alpha updates; beginning on virtual memory pagetables.
		Removed the limit for max nr of devices (in preparation for
		allowing devices' base addresses to be changed during runtime).
		Adding a hack for MIPS [d]mfc0 select 0 (except the count
		register), so that the coproc register is simply copied.
		The MIPS suspend instruction now exits the emulator, instead
		of being treated as a wait instruction (this causes NetBSD/
		hpcmips to get correct 'halt' behavior).
		The VR41xx RTC now returns correct time.
		Connecting the VR41xx timer to the timer framework (fixed at
		128 Hz, for now).
		Continuing on SPARC emulation, adding more instructions:
		restore, ba_xcc, ble. The rectangle drawing demo works :)
		Removing the last traces of the old ENABLE_CACHE_EMULATION
		MIPS stuff (not usable with dyntrans anyway).
20060902	Splitting up src/net.c into several smaller files in its own
		subdirectory (src/net/).
20060903	Cleanup of the files in src/net/, to make them less ugly.
20060904	Continuing on the 'settings' subsystem.
		Minor progress on the SPARC emulation mode.
20060905	Cleanup of various things, and connecting the settings
		infrastructure to various subsystems (emul, machine, cpu, etc).
		Changing the lk201 mouse update routine to not rely on any
		emulated hardware framebuffer cursor coordinates, but instead
		always do (semi-usable) relative movements.
20060906	Continuing on the lk201 mouse stuff. Mouse behaviour with
		multiple framebuffers (which was working in Ultrix) is now
		semi-broken (but it still works, in a way).
		Moving the documentation about networking into its own file
		(networking.html), and refreshing it a bit. Adding an example
		of how to use ethernet frame direct-access (udp_snoop).
20060907	Continuing on the settings infrastructure.
20060908	Minor updates to SH emulation: for 32-bit emulation: delay
		slots and the 'jsr @Rn' instruction. I'm putting 64-bit SH5 on
		ice, for now.
20060909-10	Implementing some more 32-bit SH instructions. Removing the
		64-bit mode completely. Enough has now been implemented to run
		the rectangle drawing demo. :-)
20060912	Adding more SH instructions.
20060916	Continuing on SH emulation (some more instructions: div0u,
		div1, rotcl/rotcr, more mov instructions, dt, braf, sets, sett,
		tst_imm, dmuls.l, subc, ldc_rm_vbr, movt, clrt, clrs, clrmac).
		Continuing on the settings subsystem (beginning on reading/
		writing settings, removing bugs, and connecting more cpus to
		the framework).
20060919	More work on SH emulation; adding an ldc banked instruction,
		and attaching a 640x480 framebuffer to the Dreamcast machine
		mode (NetBSD/dreamcast prints the NetBSD copyright banner :-),
		and then panics).
20060920	Continuing on the settings subsystem.
20060921	Fixing the Footbridge timer stuff so that NetBSD/cats and
		NetBSD/netwinder boot up without the delays.
20060922	Temporarily hardcoding MIPS timer interrupt to 100 Hz. With
		'wait' support disabled, NetBSD/malta and Linux/malta run at
		correct speed.
20060923	Connecting dev_gt to the timer framework, so that NetBSD/cobalt
		runs at correct speed.
		Moving SH4-specific memory mapped registers into its own
		device (dev_sh4.c).
		Running with -N now prints "idling" instead of bogus nr of
		instrs/second (which isn't valid anyway) while idling.
20060924	Algor emulation should now run at correct speed.
		Adding disassembly support for some MIPS64 revision 2
		instructions: ext, dext, dextm, dextu.
20060926	The timer framework now works also when the MIPS wait
		instruction is used.
20060928	Re-implementing checks for coprocessor availability for MIPS
		cop0 instructions. (Thanks to Carl van Schaik for noticing the
		lack of cop0 availability checks.)
20060929	Implementing an instruction combination hack which treats
		NetBSD/pmax' idle loop as a wait-like instruction.
20060930	The ENTRYHI_R_MASK was missing in (at least) memory_mips_v2p.c,
		causing TLB lookups to sometimes succeed when they should have
		failed. (A big thank you to Juli Mallett for noticing the
		problem.)
		Adding disassembly support for more MIPS64 revision 2 opcodes
		(seb, seh, wsbh, jalr.hb, jr.hb, synci, ins, dins, dinsu,
		dinsm, dsbh, dshd, ror, dror, rorv, drorv, dror32). Also
		implementing seb, seh, dsbh, dshd, and wsbh.
		Implementing an instruction combination hack for Linux/pmax'
		idle loop, similar to the NetBSD/pmax case.
20061001	Changing the NetBSD/sgimips install instructions to extract
		files from an iso image, instead of downloading them via ftp.
20061002	More-than-31-bit userland addresses in memory_mips_v2p.c were
		not actually working; applying a fix from Carl van Schaik to
		enable them to work + making some other updates (adding kuseg
		support).
		Fixing hpcmips (vr41xx) timer initialization.
		Experimenting with O(n)->O(1) reduction in the MIPS TLB lookup
		loop. Seems to work both for R3000 and non-R3000.
20061003	Continuing a little on SH emulation (adding more control
		registers; mini-cleanup of memory_sh.c).
20061004	Beginning on a dev_rtc, a clock/timer device for the test
		machines; also adding a demo, and some documentation.
		Fixing a bug in SH "mov.w @(disp,pc),Rn" (the result wasn't
		sign-extended), and adding the addc and ldtlb instructions.
20061005	Contining on SH emulation: virtual to physical address
		translation, and a skeleton exception mechanism.
20061006	Adding more SH instructions (various loads and stores, rte,
		negc, muls.w, various privileged register-move instructions).
20061007	More SH instructions: various move instructions, trapa, div0s,
		float, fdiv, ftrc.
		Continuing on dev_rtc; removing the rtc demo.
20061008	Adding a dummy Dreamcast PROM module. (Homebrew Dreamcast
		programs using KOS libs need this.)
		Adding more SH instructions: "stc vbr,rn", rotl, rotr, fsca,
		fmul, fadd, various floating-point moves, etc. A 256-byte
		demo for Dreamcast runs :-)
20061012	Adding the SH "lds Rm,pr" and bsr instructions.
20061013	More SH instructions: "sts fpscr,rn", tas.b, and some more
		floating point instructions, cmp/str, and more moves.
		Adding a dummy dev_pvr (Dreamcast graphics controller).
20061014	Generalizing the expression evaluator (used in the built-in
		debugger) to support parentheses and +-*/%^&|.
20061015	Removing the experimental tlb index hint code in
		mips_memory_v2p.c, since it didn't really have any effect.
20061017	Minor SH updates; adding the "sts pr,Rn", fcmp/gt, fneg,
		frchg, and some other instructions. Fixing missing sign-
		extension in an 8-bit load instruction.
20061019	Adding a simple dev_dreamcast_rtc.
		Implementing memory-mapped access to the SH ITLB/UTLB arrays.
20061021	Continuing on various SH and Dreamcast things: sh4 timers,
		debug messages for dev_pvr, fixing some virtual address
		translation bugs, adding the bsrf instruction.
		The NetBSD/dreamcast GENERIC_MD kernel now reaches userland :)
		Adding a dummy dev_dreamcast_asic.c (not really useful yet).
		Implementing simple support for Store Queues.
		Beginning on the PVR Tile Accelerator.
20061022	Generalizing the PVR framebuffer to support off-screen drawing,
		multiple bit-depths, etc. (A small speed penalty, but most
		likely worth it.)
		Adding more SH instructions (mulu.w, fcmp/eq, fsub, fmac,
		fschg, and some more); correcting bugs in "fsca" and "float".
20061024	Adding the SH ftrv (matrix * vector) instruction. Marcus
		Comstedt's "tatest" example runs :) (wireframe only).
		Correcting disassembly for SH floating point instructions that
		use the xd* registers.
		Adding the SH fsts instruction.
		In memory_device_dyntrans_access(), only the currently used
		range is now invalidated, and not the entire device range.
20061025	Adding a dummy AVR32 cpu mode skeleton.
20061026	Various Dreamcast updates; beginning on a Maple bus controller.
20061027	Continuing on the Maple bus. A bogus Controller, Keyboard, and
		Mouse can now be detected by NetBSD and KOS homebrew programs.
		Cleaning up the SH4 Timer Management Unit, and beginning on
		SH4 interrupts.
		Implementing the Dreamcast SYSASIC.
20061028	Continuing on the SYSASIC.
		Adding the SH fsqrt instruction.
		memory_sh.c now actually scans the ITLB.
		Fixing a bug in dev_sh4.c, related to associative writes into
		the memory-mapped UTLB array. NetBSD/dreamcast now reaches
		userland stably, and prints the "Terminal type?" message :-]
		Implementing enough of the Dreamcast keyboard to make NetBSD
		accept it for input.
		Enabling SuperH for stable (non-development) builds.
		Adding NetBSD/dreamcast to the documentation, although it
		doesn't support root-on-nfs yet.
20061029	Changing usleep(1) calls in the debugger to to usleep(10000)
		(according to Brian Foley, this makes GXemul run better on
		MacOS X).
		Making the Maple "Controller" do something (enough to barely
		interact with dcircus.elf).
20061030-31	Some progress on the PVR. More test programs start running (but
		with strange output).
		Various other SH4-related updates.
20061102	Various Dreamcast and SH4 updates; more KOS demos run now.
20061104	Adding a skeleton dev_mb8696x.c (the Dreamcast's LAN adapter).
20061105	Continuing on the MB8696x; NetBSD/dreamcast detects it as mbe0.
		Testing for the release.

==============  RELEASE 0.4.3  ==============


1 /*
2 * Copyright (C) 2004-2006 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: debugger_expr.c,v 1.9 2006/10/17 07:56:19 debug Exp $
29 *
30 * Expression evaluator.
31 *
32 *
33 * TODO:
34 * Sign-extension only on MIPS?
35 * SPECIAL IMPORTANT CASE: Clear the delay_slot flag when writing
36 * to the pc register.
37 * TAB completion? :-)
38 */
39
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <ctype.h>
44
45 #include "cpu.h"
46 #include "debugger.h"
47 #include "machine.h"
48 #include "misc.h"
49 #include "settings.h"
50
51
52 extern struct settings *global_settings;
53
54 extern int debugger_cur_cpu;
55 extern int debugger_cur_machine;
56 extern int debugger_cur_emul;
57
58
59 /*
60 * debugger_parse_name():
61 *
62 * This function takes a string as input, and tries to match it to a register
63 * name or a more general "setting", a hexadecimal or decimal numeric value,
64 * or a registered symbol.
65 *
66 * Some examples:
67 *
68 * Settings (including register names):
69 * verbose
70 * pc
71 * r5
72 *
73 * Numeric values:
74 * 12345
75 * 0x7fff1234
76 *
77 * Symbols:
78 * memcpy
79 *
80 * To force detection of different types, a character can be added in front of
81 * the name: "$" for numeric values, "#" for registers or other settings,
82 * and "@" for symbols.
83 *
84 * Return value is:
85 *
86 * PARSE_NOMATCH no match
87 * PARSE_MULTIPLE multiple matches
88 *
89 * or one of these (and then *valuep is read or written, depending on
90 * the writeflag):
91 *
92 * PARSE_SETTINGS a setting (e.g. a register)
93 * PARSE_NUMBER a hex number
94 * PARSE_SYMBOL a symbol
95 */
96 int debugger_parse_name(struct machine *m, char *name, int writeflag,
97 uint64_t *valuep)
98 {
99 int match_settings = 0, match_symbol = 0, match_numeric = 0;
100 int skip_settings, skip_numeric, skip_symbol;
101
102 if (m == NULL || name == NULL) {
103 fprintf(stderr, "debugger_parse_name(): NULL ptr\n");
104 exit(1);
105 }
106
107 while (name[0] == '\t' || name[0] == ' ')
108 name ++;
109
110 /* Warn about non-signextended values: */
111 if (writeflag) {
112 if (m->cpus[0]->is_32bit) {
113 /* Automagically sign-extend. TODO: Is this good? */
114 if (((*valuep) >> 32) == 0 && (*valuep) & 0x80000000ULL)
115 (*valuep) |= 0xffffffff00000000ULL;
116 } else {
117 if (((*valuep) >> 32) == 0 && (*valuep) & 0x80000000ULL)
118 printf("WARNING: The value is not sign-extende"
119 "d. Is this what you intended?\n");
120 }
121 }
122
123 skip_settings = name[0] == '$' || name[0] == '@';
124 skip_numeric = name[0] == '#' || name[0] == '@';
125 skip_symbol = name[0] == '$' || name[0] == '#';
126
127 if (!skip_settings) {
128 char setting_name[400];
129 int res;
130
131 res = settings_access(global_settings, name, writeflag, valuep);
132 if (res == SETTINGS_OK)
133 match_settings = 1;
134
135 if (!match_settings) {
136 snprintf(setting_name, sizeof(setting_name),
137 GLOBAL_SETTINGS_NAME".%s", name);
138 res = settings_access(global_settings, setting_name,
139 writeflag, valuep);
140 if (res == SETTINGS_OK)
141 match_settings = 1;
142 }
143
144 if (!match_settings) {
145 snprintf(setting_name, sizeof(setting_name),
146 GLOBAL_SETTINGS_NAME".emul[%i].%s",
147 debugger_cur_emul, name);
148 res = settings_access(global_settings, setting_name,
149 writeflag, valuep);
150 if (res == SETTINGS_OK)
151 match_settings = 1;
152 }
153
154 if (!match_settings) {
155 snprintf(setting_name, sizeof(setting_name),
156 GLOBAL_SETTINGS_NAME".emul[%i].machine[%i].%s",
157 debugger_cur_emul, debugger_cur_machine, name);
158 res = settings_access(global_settings, setting_name,
159 writeflag, valuep);
160 if (res == SETTINGS_OK)
161 match_settings = 1;
162 }
163
164 if (!match_settings) {
165 snprintf(setting_name, sizeof(setting_name),
166 GLOBAL_SETTINGS_NAME".emul[%i].machine[%i]."
167 "cpu[%i].%s", debugger_cur_emul,
168 debugger_cur_machine, debugger_cur_cpu, name);
169 res = settings_access(global_settings, setting_name,
170 writeflag, valuep);
171 if (res == SETTINGS_OK)
172 match_settings = 1;
173 }
174 }
175
176 /* Check for a number match: */
177 if (!skip_numeric && isdigit((int)name[0])) {
178 uint64_t x;
179 x = strtoull(name, NULL, 0);
180 if (writeflag)
181 printf("You cannot assign like that.\n");
182 else
183 *valuep = x;
184 match_numeric = 1;
185 }
186
187 /* Check for a symbol match: */
188 if (!skip_symbol) {
189 uint64_t newaddr;
190 if (get_symbol_addr(&m->symbol_context, name, &newaddr)) {
191 if (writeflag)
192 printf("You cannot assign like that.\n");
193 else
194 *valuep = newaddr;
195 match_symbol = 1;
196 }
197 }
198
199 if (match_settings + match_symbol + match_numeric > 1)
200 return PARSE_MULTIPLE;
201
202 if (match_settings)
203 return PARSE_SETTINGS;
204 if (match_numeric)
205 return PARSE_NUMBER;
206 if (match_symbol)
207 return PARSE_SYMBOL;
208
209 return PARSE_NOMATCH;
210 }
211
212
213 /*
214 * debugger_parse_expression()
215 *
216 * Input:
217 * writeflag = 0: expr = an expression to evaluate. The result is
218 * returned in *valuep.
219 *
220 * writeflag = 1: expr = an lvalue name. *valuep is written to that
221 * lvalue, using debugger_parse_name().
222 *
223 * Parentheses always have precedence.
224 * * / and % have second highest precedence.
225 * + - & | ^ have lowest precedence.
226 *
227 * Return value on failure is:
228 *
229 * PARSE_NOMATCH one or more words in the expression didn't
230 * match any known symbol/register/number
231 * PARSE_MULTIPLE multiple matches within the expression
232 *
233 * Return value on success is PARSE_NUMBER (for now).
234 *
235 *
236 * TODO: BETTER RETURN VALUE!
237 *
238 * NOTE: This is a quick hack, but hopefully it should work. The internal
239 * mechanism is to split the expression into a left half and a right
240 * half around an operator. This operator should be the operator
241 * in the string which has the lowest precedence (except those that
242 * are inside parentheses sub-expressions). E.g. if the expression
243 * is a * (b + c * d) / e then the operator with the lowest
244 * precedence is the first multiplication sign, and the split will
245 * be: left = a
246 * right = (b+c*d)/e
247 */
248 int debugger_parse_expression(struct machine *m, char *expr, int writeflag,
249 uint64_t *valuep)
250 {
251 int prec, res, i, nest;
252 char *copy;
253
254 if (writeflag)
255 return debugger_parse_name(m, expr, writeflag, valuep);
256
257 while (expr[0] == '\t' || expr[0] == ' ')
258 expr ++;
259
260 copy = strdup(expr);
261 if (copy == NULL) {
262 fprintf(stderr, "debugger_parse_expression(): out of memory\n");
263 exit(1);
264 }
265
266 while (copy[0] && copy[strlen(copy)-1] == ' ')
267 copy[strlen(copy)-1] = '\0';
268
269 /* Find the lowest operator precedence: */
270 i = 0; prec = 2; nest = 0;
271 while (copy[i] != '\0') {
272 switch (copy[i]) {
273 case '(':
274 nest ++;
275 break;
276 case ')':
277 nest --;
278 break;
279 case '+':
280 case '-':
281 case '^':
282 case '&':
283 case '|':
284 if (nest == 0)
285 prec = 0;
286 break;
287 case '*':
288 case '/':
289 case '%':
290 if (nest == 0 && prec > 1)
291 prec = 1;
292 break;
293 }
294
295 i++;
296 }
297
298 if (nest != 0) {
299 printf("Unmatching parentheses.\n");
300 return PARSE_NOMATCH;
301 }
302
303 if (prec == 2 && copy[0] == '(' && copy[strlen(copy)-1] == ')') {
304 int res;
305 copy[strlen(copy)-1] = '\0';
306 res = debugger_parse_expression(m, copy+1, 0, valuep);
307 free(copy);
308 return res;
309 }
310
311 /* Split according to the first lowest priority operator: */
312 i = 0; nest = 0;
313 while (copy[i] != '\0') {
314 switch (copy[i]) {
315 case '(':
316 nest ++;
317 break;
318 case ')':
319 nest --;
320 break;
321 case '*':
322 case '/':
323 case '%':
324 if (prec == 0)
325 break;
326 /* Fallthrough. */
327 case '+':
328 case '-':
329 case '^':
330 case '&':
331 case '|':
332 if (nest == 0) {
333 uint64_t left, right;
334 int res1, res2, j;
335 char op = copy[i];
336
337 copy[i] = '\0';
338 j = i;
339 while (j>0 && copy[j-1] == ' ') {
340 copy[j-1] = '\0';
341 j --;
342 }
343
344 res1 = debugger_parse_expression(
345 m, copy, 0, &left);
346 res2 = debugger_parse_expression(
347 m, copy + i + 1, 0, &right);
348
349 if (res1 == PARSE_NOMATCH ||
350 res2 == PARSE_NOMATCH) {
351 res = PARSE_NOMATCH;
352 goto return_failure;
353 }
354
355 if (res1 == PARSE_MULTIPLE ||
356 res2 == PARSE_MULTIPLE) {
357 res = PARSE_MULTIPLE;
358 goto return_failure;
359 }
360
361 switch (op) {
362 case '+':
363 (*valuep) = left + right;
364 break;
365 case '-':
366 (*valuep) = left - right;
367 break;
368 case '^':
369 (*valuep) = left ^ right;
370 break;
371 case '&':
372 (*valuep) = left & right;
373 break;
374 case '|':
375 (*valuep) = left | right;
376 break;
377 case '*':
378 (*valuep) = left * right;
379 break;
380 case '/':
381 (*valuep) = left / right;
382 break;
383 case '%':
384 (*valuep) = left % right;
385 break;
386 }
387
388 goto return_ok;
389 }
390 break;
391 }
392
393 i ++;
394 }
395
396 res = debugger_parse_name(m, expr, writeflag, valuep);
397 if (res == PARSE_NOMATCH || res == PARSE_MULTIPLE)
398 goto return_failure;
399
400 return_ok:
401 free(copy);
402 return PARSE_NUMBER;
403
404 return_failure:
405 free(copy);
406 return res;
407 }
408

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