eggert@AI.MIT.EDU (Paul Eggert) (06/14/89)
Here is a tm- file for the Omron Luna, which is a 68030 Integrated Solutions
machine. The compiler compiles itself correctly under UNIOS-B 4.3BSD UNIX:
1.21R, with USE_GAS either set (the default) or unset. Perhaps this file
should replace the old tm-isi68.h; or perhaps you'd like to call it tm-luna.h.
Although the machine is a 68030, there's little evidence that it's anything
but a 68020, so I think this same file will work with 68020s too.
================================================================
/* Definitions of target machine for GNU compiler. ISI 68020 version.
Copyright (C) 1988, 1989 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Define USE_GAS if GCC is supposed to work with the GNU assembler.
Use ISI's assembler otherwise. Warning: ISI's assembler is buggy,
and to work around the bugs we must generate slower code. */
#define USE_GAS
#include "tm-m68k.h"
/* See tm-m68k.h. 7 means 68020 with 68881. */
#define TARGET_DEFAULT 7
/* Define __HAVE_68881__ in preprocessor, unless -msoft-float is specified.
This will control the use of inline 68881 insns in certain macros. */
#define CPP_SPEC "%{!msoft-float:-D__HAVE_68881__}"
/* If the 68881 is used, link must load libmc.a instead of libc.a */
#define LIB_SPEC "%{msoft-float:%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}%{!msoft-float:%{!p:%{!pg:-lmc}}%{p:-lmc_p}%{pg:-lmc_p}}"
/* Names to predefine in the preprocessor for this target machine. */
#define CPP_PREDEFINES "-Dieeep754 -Dis68k -Dmc68000 -Dunix"
/* This is BSD, so it wants DBX format. */
#define DBX_DEBUGGING_INFO
/* Override parts of tm-m68k.h. */
#undef FUNCTION_VALUE
#undef LIBCALL_VALUE
#undef FUNCTION_VALUE_REGNO_P
#undef ASM_FILE_START
/* If TARGET_68881, return SF and DF values in f0 instead of d0. */
#define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
#define LIBCALL_VALUE(MODE) \
gen_rtx (REG, (MODE), ((TARGET_68881 && ((MODE) == SFmode || (MODE) == DFmode)) ? 16 : 0))
/* 1 if N is a possible register number for a function value.
D0 may be used, and F0 as well if -m68881 is specified. */
#define FUNCTION_VALUE_REGNO_P(N) \
((N) == 0 || (TARGET_68881 && (N) == 16))
#ifdef USE_GAS
/* Also output something to cause the correct _doprnt to be loaded. */
#define ASM_FILE_START(FILE) fprintf (FILE, "#NO_APP\n.globl fltused\n")
#else
/* Also output something to cause the correct _doprnt to be loaded. */
#define ASM_FILE_START(FILE) fprintf (FILE, ".globl fltused\n")
/* The assembler doesn't understand tstl a0; generate slower code instead. */
#define ISI_OV
/* The assembler requires a special flag. */
#define ASM_SPEC "-20"
#undef FUNCTION_PROLOGUE
#undef FUNCTION_EPILOGUE
#undef REGISTER_NAMES
#undef ASM_OUTPUT_SKIP
#undef ASM_OUTPUT_DOUBLE
#undef ASM_OUTPUT_FLOAT_OPERAND
#undef ASM_OUTPUT_DOUBLE_OPERAND
#undef PRINT_OPERAND
#undef PRINT_OPERAND_ADDRESS
/* The assembler requires 'fmovemx'; it does not understand 'fmovem'. */
#define FUNCTION_PROLOGUE(FILE, SIZE) \
{ register int regno; \
register int mask = 0; \
extern char call_used_regs[]; \
int fsize = ((SIZE) + 3) & -4; \
if (frame_pointer_needed) \
{ if (TARGET_68020 || fsize < 0x8000) \
fprintf (FILE, "\tlink a6,#%d\n", -fsize); \
else \
fprintf (FILE, "\tlink a6,#0\n\tsubl #%d,sp\n", fsize); } \
for (regno = 24; regno < 56; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
fprintf(FILE, "\tfpmoved %s, sp@-\n", \
reg_names[regno]); \
for (regno = 16; regno < 24; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
mask |= 1 << (regno - 16); \
if ((mask & 0xff) != 0) \
fprintf (FILE, "\tfmovemx #0x%x,sp@-\n", mask & 0xff); \
mask = 0; \
for (regno = 0; regno < 16; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
mask |= 1 << (15 - regno); \
if (frame_pointer_needed) \
mask &= ~ (1 << (15-FRAME_POINTER_REGNUM)); \
if (exact_log2 (mask) >= 0) \
fprintf (FILE, "\tmovel %s,sp@-\n", reg_names[15 - exact_log2 (mask)]); \
else if (mask) fprintf (FILE, "\tmoveml #0x%x,sp@-\n", mask); }
#define FUNCTION_EPILOGUE(FILE, SIZE) \
{ register int regno; \
register int mask, fmask; \
register int nregs; \
int offset, foffset, fpoffset; \
extern char call_used_regs[]; \
extern int current_function_pops_args; \
extern int current_function_args_size; \
int fsize = ((SIZE) + 3) & -4; \
int big = 0; \
nregs = 0; fmask = 0; fpoffset = 0; \
for (regno = 24 ; regno < 56 ; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
nregs++; \
fpoffset = nregs*8; \
nregs = 0; \
for (regno = 16; regno < 24; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
{ nregs++; fmask |= 1 << (23 - regno); } \
foffset = fpoffset + nregs * 12; \
nregs = 0; mask = 0; \
if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
for (regno = 0; regno < 16; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
{ nregs++; mask |= 1 << regno; } \
offset = foffset + nregs * 4; \
if (offset + fsize >= 0x8000 \
&& frame_pointer_needed \
&& (mask || fmask || fpoffset)) \
{ fprintf (FILE, "\tmovel #%d,a0\n", -fsize); \
fsize = 0, big = 1; } \
if (exact_log2 (mask) >= 0) { \
if (big) \
fprintf (FILE, "\tmovel a6@(-%d,a0:l),%s\n", \
offset + fsize, reg_names[exact_log2 (mask)]); \
else if (! frame_pointer_needed) \
fprintf (FILE, "\tmovel sp@+,%s\n", \
reg_names[exact_log2 (mask)]); \
else \
fprintf (FILE, "\tmovel a6@(-%d),%s\n", \
offset + fsize, reg_names[exact_log2 (mask)]); } \
else if (mask) { \
if (big) \
fprintf (FILE, "\tmoveml a6@(-%d,a0:l),#0x%x\n", \
offset + fsize, mask); \
else if (! frame_pointer_needed) \
fprintf (FILE, "\tmoveml sp@+,#0x%x\n", mask); \
else \
fprintf (FILE, "\tmoveml a6@(-%d),#0x%x\n", \
offset + fsize, mask); } \
if (fmask) { \
if (big) \
fprintf (FILE, "\tfmovemx a6@(-%d,a0:l),#0x%x\n", \
foffset + fsize, fmask); \
else if (! frame_pointer_needed) \
fprintf (FILE, "\tfmovemx sp@+,#0x%x\n", fmask); \
else \
fprintf (FILE, "\tfmovemx a6@(-%d),#0x%x\n", \
foffset + fsize, fmask); } \
if (fpoffset != 0) \
for (regno = 55; regno >= 24; regno--) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) { \
if (big) \
fprintf(FILE, "\tfpmoved a6@(-%d,a0:l), %s\n", \
fpoffset + fsize, reg_names[regno]); \
else if (! frame_pointer_needed) \
fprintf(FILE, "\tfpmoved sp@+, %s\n", \
reg_names[regno]); \
else \
fprintf(FILE, "\tfpmoved a6@(-%d), %s\n", \
fpoffset + fsize, reg_names[regno]); \
fpoffset -= 8; \
} \
if (frame_pointer_needed) \
fprintf (FILE, "\tunlk a6\n"); \
if (current_function_pops_args && current_function_args_size) \
fprintf (FILE, "\trtd #%d\n", current_function_args_size); \
else fprintf (FILE, "\trts\n"); }
/* How to refer to registers in assembler output. */
#define REGISTER_NAMES \
{"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
"a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp", \
"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", }
/* How to output floats and doubles. */
#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
fprintf (FILE, "\t.double 0d%.20g\n", (VALUE))
#define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE) \
fprintf (FILE, "#0f%.9g", (VALUE))
#define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \
fprintf (FILE, "#0d%.20g", (VALUE))
/* How to skip n bytes in the output. */
#define ASM_OUTPUT_SKIP(FILE,SIZE) \
fprintf (FILE, "\t.space %d\n", (SIZE))
/* The assembler does not allow '#' before bit fields. */
#define PRINT_OPERAND(FILE, X, CODE) \
{ int i; \
if (CODE == '.') ; \
else if (CODE == '#') fprintf (FILE, "#"); \
else if (CODE == '-') fprintf (FILE, "sp@-"); \
else if (CODE == '+') fprintf (FILE, "sp@+"); \
else if (CODE == '@') fprintf (FILE, "sp@"); \
else if (CODE == '!') fprintf (FILE, "cc"); \
else if (GET_CODE (X) == REG) \
{ if (REGNO (X) < 16 && (CODE == 'y' || CODE == 'x') && GET_MODE (X) == DFmode) \
fprintf (FILE, "%s:%s", reg_names[REGNO (X)], reg_names[REGNO (X)+1]); \
else \
fprintf (FILE, "%s", reg_names[REGNO (X)]); \
} \
else if (GET_CODE (X) == MEM) \
{ \
output_address (XEXP (X, 0)); \
if (CODE == 'd' && ! TARGET_68020 \
&& CONSTANT_ADDRESS_P (XEXP (X, 0))) \
fprintf (FILE, ":l"); \
} \
else if ((CODE == 'y' || CODE == 'w') \
&& GET_CODE(X) == CONST_DOUBLE \
&& (i = standard_sun_fpa_constant_p (X))) \
fprintf (FILE, "%%%d", i & 0x1ff); \
else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
{ union { double d; int i[2]; } u; \
union { float f; int i; } u1; \
u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X); \
u1.f = u.d; \
if (CODE == 'f') \
ASM_OUTPUT_FLOAT_OPERAND (FILE, u1.f); \
else \
fprintf (FILE, "#0x%x", u1.i); } \
else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != DImode) \
{ union { double d; int i[2]; } u; \
u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X); \
ASM_OUTPUT_DOUBLE_OPERAND (FILE, u.d); } \
else if (CODE == 'b') output_addr_const (FILE, X); \
else { putc ('#', FILE); output_addr_const (FILE, X); }}
/* The assembler uses "*S" instead of ":S" for a scale factor S,
and requires "0," before an index register with zero offset.
Also, because it cannot assemble a byte-size displacement from an indexed
jump, we must generate a slower word-size displacement instead. */
#define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
{ register rtx reg1, reg2, breg, ireg; \
register rtx addr = ADDR; \
rtx offset; \
switch (GET_CODE (addr)) \
{ \
case REG: \
fprintf (FILE, "%s@", reg_names[REGNO (addr)]); \
break; \
case PRE_DEC: \
fprintf (FILE, "%s@-", reg_names[REGNO (XEXP (addr, 0))]); \
break; \
case POST_INC: \
fprintf (FILE, "%s@+", reg_names[REGNO (XEXP (addr, 0))]); \
break; \
case PLUS: \
reg1 = 0; reg2 = 0; \
ireg = 0; breg = 0; \
offset = 0; \
if (CONSTANT_ADDRESS_P (XEXP (addr, 0))) \
{ \
offset = XEXP (addr, 0); \
addr = XEXP (addr, 1); \
} \
else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))) \
{ \
offset = XEXP (addr, 1); \
addr = XEXP (addr, 0); \
} \
if (GET_CODE (addr) != PLUS) ; \
else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND) \
{ \
reg1 = XEXP (addr, 0); \
addr = XEXP (addr, 1); \
} \
else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND) \
{ \
reg1 = XEXP (addr, 1); \
addr = XEXP (addr, 0); \
} \
else if (GET_CODE (XEXP (addr, 0)) == MULT) \
{ \
reg1 = XEXP (addr, 0); \
addr = XEXP (addr, 1); \
} \
else if (GET_CODE (XEXP (addr, 1)) == MULT) \
{ \
reg1 = XEXP (addr, 1); \
addr = XEXP (addr, 0); \
} \
else if (GET_CODE (XEXP (addr, 0)) == REG) \
{ \
reg1 = XEXP (addr, 0); \
addr = XEXP (addr, 1); \
} \
else if (GET_CODE (XEXP (addr, 1)) == REG) \
{ \
reg1 = XEXP (addr, 1); \
addr = XEXP (addr, 0); \
} \
if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT \
|| GET_CODE (addr) == SIGN_EXTEND) \
{ if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; } \
/* for OLD_INDEXING \
else if (GET_CODE (addr) == PLUS) \
{ \
if (GET_CODE (XEXP (addr, 0)) == REG) \
{ \
reg2 = XEXP (addr, 0); \
addr = XEXP (addr, 1); \
} \
else if (GET_CODE (XEXP (addr, 1)) == REG) \
{ \
reg2 = XEXP (addr, 1); \
addr = XEXP (addr, 0); \
} \
} \
*/ \
if (offset != 0) { if (addr != 0) abort (); addr = offset; } \
if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND \
|| GET_CODE (reg1) == MULT)) \
|| (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2)))) \
{ breg = reg2; ireg = reg1; } \
else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1))) \
{ breg = reg1; ireg = reg2; } \
if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF) \
{ int scale = 1; \
if (GET_CODE (ireg) == MULT) \
{ scale = INTVAL (XEXP (ireg, 1)); \
ireg = XEXP (ireg, 0); } \
if (GET_CODE (ireg) == SIGN_EXTEND) \
fprintf (FILE, "pc@(L%d:w,%s:w", \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
reg_names[REGNO (XEXP (ireg, 0))]); \
else \
fprintf (FILE, "pc@(L%d:w,%s:l", \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
reg_names[REGNO (ireg)]); \
if (scale != 1) fprintf (FILE, "*%d", scale); \
putc (')', FILE); \
break; } \
if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF) \
{ fprintf (FILE, "pc@(L%d:w,%s:l", \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
reg_names[REGNO (breg)]); \
putc (')', FILE); \
break; } \
if (ireg != 0 || breg != 0) \
{ int scale = 1; \
if (breg == 0) \
abort (); \
if (addr && GET_CODE (addr) == LABEL_REF) abort (); \
fprintf (FILE, "%s@(", reg_names[REGNO (breg)]); \
if (addr != 0) \
output_addr_const (FILE, addr); \
else \
putc ('0', FILE); \
if (ireg != 0) \
putc (',', FILE); \
if (ireg != 0 && GET_CODE (ireg) == MULT) \
{ scale = INTVAL (XEXP (ireg, 1)); \
ireg = XEXP (ireg, 0); } \
if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND) \
fprintf (FILE, "%s:w", reg_names[REGNO (XEXP (ireg, 0))]); \
else if (ireg != 0) \
fprintf (FILE, "%s:l", reg_names[REGNO (ireg)]); \
if (scale != 1) fprintf (FILE, "*%d", scale); \
putc (')', FILE); \
break; \
} \
else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF) \
{ fprintf (FILE, "pc@(L%d:w,%s:l)", \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
reg_names[REGNO (reg1)]); \
break; } \
default: \
if (GET_CODE (addr) == CONST_INT \
&& INTVAL (addr) < 0x8000 \
&& INTVAL (addr) >= -0x8000) \
fprintf (FILE, "%d:w", INTVAL (addr)); \
else \
output_addr_const (FILE, addr); \
}}
#endif /* USE_GAS */