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1.1 root 1: /* Definitions of target machine for GNU compiler.
2: AT&T UNIX PC version (pc7300, 3b1)
3:
4: Written by Alex Crain
5: bug reports to [email protected]
6:
7: Copyright (C) 1987 Free Software Foundation, Inc.
8:
9: This file is part of GNU CC.
10:
11: GNU CC is free software; you can redistribute it and/or modify
12: it under the terms of the GNU General Public License as published by
13: the Free Software Foundation; either version 2, or (at your option)
14: any later version.
15:
16: GNU CC is distributed in the hope that it will be useful,
17: but WITHOUT ANY WARRANTY; without even the implied warranty of
18: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: GNU General Public License for more details.
20:
21: You should have received a copy of the GNU General Public License
22: along with GNU CC; see the file COPYING. If not, write to
23: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
24:
25: #define SGS_SWITCH_TABLES /* Different switch table handling */
26:
27: #include "hp320.h"
28:
29: /* See m68k.h. 0 means 680[01]0 with no 68881. */
30:
31: #undef TARGET_DEFAULT
32: #define TARGET_DEFAULT 0
33:
34: /* -m68020 requires special flags to the assembler. */
35:
36: #undef ASM_SPEC
37: #define ASM_SPEC "%{m68020:-68020}%{!m68020:-68010} %{m68881:-68881}"
38:
39: /* we use /lib/libp/lib* when profiling */
40:
41: #undef LIB_SPEC
42: #define LIB_SPEC "%{!shlib:%{p:-L/lib/libp} %{pg:-L/lib/libp} -lc}"
43:
44: /* shared libraries need to use crt0s.o */
45:
46: #undef STARTFILE_SPEC
47: #define STARTFILE_SPEC \
48: "%{!shlib:%{pg:mcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}\
49: %{shlib:crt0s.o%s shlib.ifile%s} "
50:
51: /* cpp has to support a #sccs directive for the /usr/include files */
52:
53: #define SCCS_DIRECTIVE
54:
55: /* Make output for SDB. */
56:
57: #define SDB_DEBUGGING_INFO
58:
59: /* The .file command should always begin the output. */
60:
61: #undef ASM_FILE_START
62: #define ASM_FILE_START(FILE) \
63: output_file_directive ((FILE), main_input_filename)
64:
65: /* Don't try to define `gcc_compiled.' since the assembler might not
66: accept symbols with periods and GDB doesn't run on this machine anyway. */
67: #define ASM_IDENTIFY_GCC(FILE)
68:
69: /* Define __HAVE_68881__ in preprocessor if -m68881 is specified.
70: This will control the use of inline 68881 insns in certain macros. */
71:
72: #undef CPP_SPEC
73: #define CPP_SPEC "%{m68881:-D__HAVE_68881__}"
74:
75: /* Names to predefine in the preprocessor for this target machine. */
76: /* [email protected] says mc68000 and m68k should not be here. */
77:
78: #undef CPP_PREDEFINES
79: #define CPP_PREDEFINES "-Dmc68k -Dunix -Dunixpc"
80:
81: #undef REGISTER_NAMES
82: #define REGISTER_NAMES \
83: {"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", \
84: "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%fp", "%sp", \
85: "%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7"}
86:
87: /* Specify how to pad function arguments.
88: Value should be `upward', `downward' or `none'.
89: Same as the default, except no padding for large or variable-size args. */
90:
91: #define FUNCTION_ARG_PADDING(MODE, TYPE) \
92: (((MODE) == BLKmode \
93: ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
94: && int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT) \
95: : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
96: ? downward : none)
97:
98: /* Override part of the obstack macros. */
99:
100: #define __PTR_TO_INT(P) ((int)(P))
101: #define __INT_TO_PTR(P) ((char *)(P))
102:
1.1.1.2 root 103: /* The 3b1 does not have `atexit'. */
104:
105: #undef HAVE_ATEXIT
106:
1.1 root 107: /* Override parts of m68k.h to fit the SGS-3b1 assembler. */
108:
109: #undef TARGET_VERSION
110: #undef ASM_FORMAT_PRIVATE_NAME
111: #undef ASM_OUTPUT_DOUBLE
112: #undef ASM_OUTPUT_FLOAT
113: #undef ASM_OUTPUT_ALIGN
114: #undef ASM_OUTPUT_SOURCE_FILENAME
115: #undef ASM_OUTPUT_SOURCE_LINE
116: #undef PRINT_OPERAND_ADDRESS
117: #undef ASM_GENERATE_INTERNAL_LABEL
118: #undef FUNCTION_PROFILER
119: #undef ASM_OUTPUT_ADDR_VEC_ELT
120: #undef ASM_OUTPUT_ADDR_DIFF_ELT
121: #undef ASM_OUTPUT_INTERNAL_LABEL
122: #undef ASM_OUTPUT_OPCODE
123: #undef ASM_OUTPUT_LOCAL
124: #undef ASM_OUTPUT_LABELREF
125: #undef ASM_OUTPUT_ASCII
126:
127: #define TARGET_VERSION fprintf (stderr, " (68k, SGS/AT&T unixpc syntax)");
128:
129: /* Store in OUTPUT a string (made with alloca) containing
130: an assembler-name for a local static variable named NAME.
131: LABELNO is an integer which is different for each call. */
132:
133: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
134: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 12), \
135: sprintf ((OUTPUT), "%s_%%%d", (NAME), (LABELNO)))
136:
137: /* The unixpc doesn't know about double's and float's */
138:
139: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
140: do { union { double d; long l[2]; } tem; \
141: tem.d = (VALUE); \
142: fprintf(FILE, "\tlong 0x%x,0x%x\n", tem.l[0], tem.l[1]); \
143: } while (0)
144:
145: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
146: do { union { float f; long l;} tem; \
147: tem.f = (VALUE); \
148: fprintf (FILE, "\tlong 0x%x\n", tem.l); \
149: } while (0)
150:
151: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
152: if ((LOG) == 1) \
153: fprintf (FILE, "\teven\n"); \
154: else if ((LOG) != 0) \
155: abort ();
156:
157: /* This is how to output an assembler line
158: that says to advance the location counter by SIZE bytes. */
159:
160: #undef ASM_OUTPUT_SKIP
161: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
162: fprintf (FILE, "\tspace %d\n", (SIZE))
163:
164: /* Can't use ASM_OUTPUT_SKIP in text section; it doesn't leave 0s. */
165:
166: #define ASM_NO_SKIP_IN_TEXT 1
167:
168: /* The beginnings of sdb support... */
169:
170: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, FILENAME) \
171: fprintf (FILE, "\tfile\t\"%s\"\n", FILENAME)
172:
173: #define ASM_OUTPUT_SOURCE_LINE(FILE, LINENO) \
174: fprintf (FILE, "\tln\t%d\n", \
175: (sdb_begin_function_line \
176: ? last_linenum - sdb_begin_function_line : 1))
177:
178: /* Yet another null terminated string format. */
179:
180: #define ASM_OUTPUT_ASCII(FILE,PTR,LEN) \
181: { register int sp = 0, lp = 0; \
182: fprintf ((FILE), "\tbyte\t"); \
183: loop: \
184: if ((PTR)[sp] > ' ' && ! ((PTR)[sp] & 0x80) && (PTR)[sp] != '\\') \
185: { lp += 3; \
186: fprintf ((FILE), "'%c", (PTR)[sp]); } \
187: else \
188: { lp += 5; \
189: fprintf ((FILE), "0x%x", (PTR)[sp]); } \
190: if (++sp < (LEN)) \
191: { if (lp > 60) \
192: { lp = 0; \
1.1.1.3 ! root 193: fprintf ((FILE), "\n\t%s ", ASCII_DATA_ASM_OP); } \
1.1 root 194: else \
195: putc (',', (FILE)); \
196: goto loop; } \
197: putc ('\n', (FILE)); }
198:
199: /* Note that in the case of the movhi which fetches an element of
200: an ADDR_DIFF_VEC the offset output is too large by 2.
201: This is because the 3b1 assembler refuses to subtract 2.
202: ASM_OUTPUT_CASE_LABEL, below, compensates for this. */
203:
204: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
205: { register rtx reg1, reg2, breg, ireg; \
206: register rtx addr = ADDR; \
207: rtx offset; \
208: switch (GET_CODE (addr)) \
209: { \
210: case REG: \
211: fprintf (FILE, "(%s)", reg_names[REGNO (addr)]); \
212: break; \
213: case PRE_DEC: \
214: fprintf (FILE, "-(%s)", reg_names[REGNO (XEXP (addr, 0))]); \
215: break; \
216: case POST_INC: \
217: fprintf (FILE, "(%s)+", reg_names[REGNO (XEXP (addr, 0))]); \
218: break; \
219: case PLUS: \
220: reg1 = 0; reg2 = 0; \
221: ireg = 0; breg = 0; \
222: offset = 0; \
223: if (CONSTANT_ADDRESS_P (XEXP (addr, 0))) \
224: { \
225: offset = XEXP (addr, 0); \
226: addr = XEXP (addr, 1); \
227: } \
228: else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))) \
229: { \
230: offset = XEXP (addr, 1); \
231: addr = XEXP (addr, 0); \
232: } \
233: if (GET_CODE (addr) != PLUS) ; \
234: else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND) \
235: { \
236: reg1 = XEXP (addr, 0); \
237: addr = XEXP (addr, 1); \
238: } \
239: else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND) \
240: { \
241: reg1 = XEXP (addr, 1); \
242: addr = XEXP (addr, 0); \
243: } \
244: else if (GET_CODE (XEXP (addr, 0)) == MULT) \
245: { \
246: reg1 = XEXP (addr, 0); \
247: addr = XEXP (addr, 1); \
248: } \
249: else if (GET_CODE (XEXP (addr, 1)) == MULT) \
250: { \
251: reg1 = XEXP (addr, 1); \
252: addr = XEXP (addr, 0); \
253: } \
254: else if (GET_CODE (XEXP (addr, 0)) == REG) \
255: { \
256: reg1 = XEXP (addr, 0); \
257: addr = XEXP (addr, 1); \
258: } \
259: else if (GET_CODE (XEXP (addr, 1)) == REG) \
260: { \
261: reg1 = XEXP (addr, 1); \
262: addr = XEXP (addr, 0); \
263: } \
264: if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT \
265: || GET_CODE (addr) == SIGN_EXTEND) \
266: { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; } \
267: /* for OLD_INDEXING \
268: else if (GET_CODE (addr) == PLUS) \
269: { \
270: if (GET_CODE (XEXP (addr, 0)) == REG) \
271: { \
272: reg2 = XEXP (addr, 0); \
273: addr = XEXP (addr, 1); \
274: } \
275: else if (GET_CODE (XEXP (addr, 1)) == REG) \
276: { \
277: reg2 = XEXP (addr, 1); \
278: addr = XEXP (addr, 0); \
279: } \
280: } \
281: */ \
282: if (offset != 0) { if (addr != 0) abort (); addr = offset; } \
283: if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND \
284: || GET_CODE (reg1) == MULT)) \
285: || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2)))) \
286: { breg = reg2; ireg = reg1; } \
287: else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1))) \
288: { breg = reg1; ireg = reg2; } \
289: if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF) \
290: { int scale = 1; \
291: if (GET_CODE (ireg) == MULT) \
292: { scale = INTVAL (XEXP (ireg, 1)); \
293: ireg = XEXP (ireg, 0); } \
294: if (GET_CODE (ireg) == SIGN_EXTEND) \
295: fprintf (FILE, "LD%%%d(%%pc,%s.w", \
296: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
297: reg_names[REGNO (XEXP (ireg, 0))]); \
298: else \
299: fprintf (FILE, "LD%%%d(%%pc,%s.l", \
300: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
301: reg_names[REGNO (ireg)]); \
302: if (scale != 1) fprintf (FILE, "*%d", scale); \
303: fprintf (FILE, ")"); \
304: break; } \
305: if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF) \
306: { fprintf (FILE, "LD%%%d(%%pc,%s.l", \
307: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
308: reg_names[REGNO (breg)]); \
309: putc (')', FILE); \
310: break; } \
311: if (ireg != 0 || breg != 0) \
312: { int scale = 1; \
313: if (breg == 0) \
314: abort (); \
315: if (addr != 0) \
316: output_addr_const (FILE, addr); \
317: fprintf (FILE, "(%s", reg_names[REGNO (breg)]); \
318: if (ireg != 0) \
319: putc (',', FILE); \
320: if (ireg != 0 && GET_CODE (ireg) == MULT) \
321: { scale = INTVAL (XEXP (ireg, 1)); \
322: ireg = XEXP (ireg, 0); } \
323: if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND) \
324: fprintf (FILE, "%s.w", reg_names[REGNO (XEXP (ireg, 0))]); \
325: else if (ireg != 0) \
326: fprintf (FILE, "%s.l", reg_names[REGNO (ireg)]); \
327: if (scale != 1) fprintf (FILE, "*%d", scale); \
328: putc (')', FILE); \
329: break; \
330: } \
331: else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF) \
332: { fprintf (FILE, "LD%%%d(%%pc,%s.w)", \
333: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
334: reg_names[REGNO (reg1)]); \
335: break; } \
336: default: \
337: if (GET_CODE (addr) == CONST_INT \
338: && INTVAL (addr) < 0x8000 \
339: && INTVAL (addr) >= -0x8000) \
340: fprintf (FILE, "%d", INTVAL (addr)); \
341: else \
342: output_addr_const (FILE, addr); \
343: }}
344:
345: #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
346: sprintf ((LABEL), "%s%%%d", (PREFIX), (NUM))
347:
348: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
349: fprintf (FILE, "%s%%%d:\n", PREFIX, NUM)
350:
351: /* Must put address in %a0 , not %d0 . -- LGM, 7/15/88 */
352: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
353: fprintf (FILE, "\tmov.l &LP%%%d,%%a0\n\tjsr mcount\n", (LABEL_NO))
354:
355: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
356: fprintf (FILE, "\tlong L%%%d\n", (VALUE))
357:
358: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
359: fprintf (FILE, "\tshort L%%%d-L%%%d\n", (VALUE), (REL))
360:
361: /* ihnp4!lmayk!lgm says that `short 0' triggers assembler bug;
362: `short L%nn-L%nn' supposedly works. */
363: #define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
364: if (! RTX_INTEGRATED_P (TABLE)) \
365: fprintf (FILE, "\tswbeg &%d\n%s%%%d:\n", \
366: XVECLEN (PATTERN (TABLE), 1), (PREFIX), (NUM)); \
367: else \
368: fprintf (FILE, "\tswbeg &%d\n%s%%%d:\n\tshort %s%%%d-%s%%%d\n", \
369: XVECLEN (PATTERN (TABLE), 1) + 1, (PREFIX), (NUM), \
370: (PREFIX), (NUM), (PREFIX), (NUM))
371:
1.1.1.3 ! root 372: /* At end of a switch table, define LDnnn iff the symbol LInnn was defined.
! 373: Some SGS assemblers have a bug such that "Lnnn-LInnn-2.b(pc,d0.l*2)"
! 374: fails to assemble. Luckily "LDnnn(pc,d0.l*2)" produces the results
! 375: we want. This difference can be accommodated by making the assembler
! 376: define such "LDnnn" to be either "Lnnn-LInnn-2.b", "Lnnn", or any other
! 377: string, as necessary. This is accomplished via the ASM_OUTPUT_CASE_END
! 378: macro. */
! 379:
! 380: #define ASM_OUTPUT_CASE_END(FILE,NUM,TABLE) \
! 381: { if (switch_table_difference_label_flag) \
! 382: fprintf (FILE, "\tset LD%%%d,L%%%d-LI%%%d\n", (NUM), (NUM), (NUM)) \
! 383: switch_table_difference_label_flag = 0; }
! 384:
! 385: int switch_table_difference_label_flag;
1.1 root 386:
387: #define ASM_OUTPUT_OPCODE(FILE, PTR) \
388: { if ((PTR)[0] == 'j' && (PTR)[1] == 'b') \
389: { ++(PTR); \
390: while (*(PTR) != ' ') \
391: { putc (*(PTR), (FILE)); ++(PTR); } \
392: fprintf ((FILE), ".w"); } \
1.1.1.2 root 393: else if ((PTR)[0] == 's') \
394: { \
395: if (!strncmp ((PTR), "swap", 4)) \
396: { fprintf ((FILE), "swap.w"); (PTR) += 4; } \
397: } \
1.1 root 398: else if ((PTR)[0] == 'f') \
399: { \
400: if (!strncmp ((PTR), "fmove", 5)) \
401: { fprintf ((FILE), "fmov"); (PTR) += 5; } \
402: else if (!strncmp ((PTR), "fbne", 4)) \
403: { fprintf ((FILE), "fbneq"); (PTR) += 4; } \
404: } \
405: /* MOVE, MOVEA, MOVEQ, MOVEC ==> MOV */ \
406: else if ((PTR)[0] == 'm' && (PTR)[1] == 'o' \
407: && (PTR)[2] == 'v' && (PTR)[3] == 'e') \
408: { fprintf ((FILE), "mov"); (PTR) += 4; \
1.1.1.2 root 409: if ((PTR)[0] == 'q' || (PTR)[0] == 'a' \
410: || (PTR)[0] == 'c') (PTR)++; } \
1.1 root 411: /* SUB, SUBQ, SUBA, SUBI ==> SUB */ \
412: else if ((PTR)[0] == 's' && (PTR)[1] == 'u' \
413: && (PTR)[2] == 'b') \
414: { fprintf ((FILE), "sub"); (PTR) += 3; \
1.1.1.2 root 415: if ((PTR)[0] == 'q' || (PTR)[0] == 'i' \
416: || (PTR)[0] == 'a') (PTR)++; } \
1.1 root 417: /* CMP, CMPA, CMPI, CMPM ==> CMP */ \
418: else if ((PTR)[0] == 'c' && (PTR)[1] == 'm' \
419: && (PTR)[2] == 'p') \
420: { fprintf ((FILE), "cmp"); (PTR) += 3; \
1.1.1.2 root 421: if ((PTR)[0] == 'a' || (PTR)[0] == 'i' \
422: || (PTR)[0] == 'm') (PTR)++; } \
1.1 root 423: }
424:
425: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
426: ( fputs ("\tlcomm ", (FILE)), \
427: assemble_name ((FILE), (NAME)), \
428: fprintf ((FILE), ",%u\n", (ROUNDED)))
429:
430: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
431: fprintf (FILE, "%s", NAME)
432:
433: /* Override usual definitions of SDB output macros.
434: These definitions differ only in the absence of the period
435: at the beginning of the name of the directive
436: and in the use of `~' as the symbol for the current location. */
437:
438: #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\tscl\t%d;", (a))
439: #define PUT_SDB_INT_VAL(a) fprintf (asm_out_file, "\tval\t%d;", (a))
440: #define PUT_SDB_VAL(a) \
441: ( fputs ("\tval\t", asm_out_file), \
442: output_addr_const (asm_out_file, (a)), \
443: fputc (';', asm_out_file))
444:
445: #define PUT_SDB_DEF(a) \
446: do { fprintf (asm_out_file, "\tdef\t"); \
447: ASM_OUTPUT_LABELREF (asm_out_file, a); \
448: fprintf (asm_out_file, ";"); } while (0)
449:
450: #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\tdef\t~%s;",a)
451: #define PUT_SDB_ENDEF fputs("\tendef\n", asm_out_file)
452: #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\ttype\t0%o;", a)
453: #define PUT_SDB_SIZE(a) fprintf(asm_out_file, "\tsize\t%d;", a)
454: #define PUT_SDB_START_DIM fprintf(asm_out_file, "\tdim\t")
455:
456: #define PUT_SDB_TAG(a) \
457: do { fprintf (asm_out_file, "\ttag\t"); \
458: ASM_OUTPUT_LABELREF (asm_out_file, a); \
459: fprintf (asm_out_file, ";"); } while (0)
460:
461: #define PUT_SDB_BLOCK_START(LINE) \
462: fprintf (asm_out_file, \
463: "\tdef\t~bb;\tval\t~;\tscl\t100;\tline\t%d;\tendef\n", \
464: (LINE))
465:
466: #define PUT_SDB_BLOCK_END(LINE) \
467: fprintf (asm_out_file, \
468: "\tdef\t~eb;\tval\t~;\tscl\t100;\tline\t%d;\tendef\n", \
469: (LINE))
470:
471: #define PUT_SDB_FUNCTION_START(LINE) \
472: fprintf (asm_out_file, \
473: "\tdef\t~bf;\tval\t~;\tscl\t101;\tline\t%d;\tendef\n", \
474: (LINE))
475:
476: #define PUT_SDB_FUNCTION_END(LINE) \
477: fprintf (asm_out_file, \
478: "\tdef\t~ef;\tval\t~;\tscl\t101;\tline\t%d;\tendef\n", \
479: (LINE))
480:
481: #define PUT_SDB_EPILOGUE_END(NAME) \
482: fprintf (asm_out_file, \
483: "\tdef\t%s;\tval\t~;\tscl\t-1;\tendef\n", \
484: (NAME))
485:
486: #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
487: sprintf ((BUFFER), "~%dfake", (NUMBER));
488:
489: /* Define subroutines to call to handle multiply, divide, and remainder.
490: Use the subroutines that the 3b1's library provides.
491: The `*' prevents an underscore from being prepended by the compiler. */
492:
493: #define DIVSI3_LIBCALL "*ldiv"
494: #define UDIVSI3_LIBCALL "*uldiv"
495: #define MODSI3_LIBCALL "*lrem"
496: #define UMODSI3_LIBCALL "*ulrem"
497: #define MULSI3_LIBCALL "*lmul"
498: #define UMULSI3_LIBCALL "*ulmul"
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