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/* Definitions of target machine for GNU compiler.
Generic Tektronix 6000 series NS32000 version.
See ns32k/tek6100.h and ns32k/tek6200.h, which include this file.
Copyright (C) 1990 Free Software Foundation, Inc.
Created by Snoopy (sopwith.uucp!snoopy).
Based on work by Mark Mason (mason@reed.bitnet,
pyramid!unify!mason@uunet.uu.net) and Keith Packard.
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 2, 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. */
/* Generate syntax for the UTek assembler. */
#ifndef UTEK_ASM
#define UTEK_ASM
#endif
/* Two flags to control how addresses are printed in assembler insns. */
/* The way PUT_ABSOLUTE_PREFIX in ns32k.h works, setting it to 0 will
* turn it off. Define ABSOLUTE_PREFIX before including ns32k.h.
*/
#define ABSOLUTE_PREFIX 0
#define IMMEDIATE_PREFIX '$'
#include "ns32k/ns32k.h"
/* Define these after ns32k.c so we will notice if gcc tries to
* output external mode addressing. UTek's as and ld do not support
* external mode addressing, according to Daryl McDaniel (illian.uucp!darylm).
* Hopefully the UTek assembler will complain if gcc feeds it this stuff.
* They don't seem to do anything, I think that gcc is not actually
* trying to generate external mode operands.
*/
#undef PUT_EXTERNAL_PREFIX
#define PUT_EXTERNAL_PREFIX(arg) fprintf(arg, " Should not be using external mode under UTek. ")
#define EXTERNAL_PREFIX '%'
/* Used in ns32k.c to control syntax. */
#define NO_ABSOLUTE_PREFIX_IF_SYMBOLIC
#define NO_IMMEDIATE_PREFIX_IF_SYMBOLIC
/* Used in ns32k.md to specify syntax of bsr/jsr operand. */
#define CALL_MEMREF_IMPLICIT
/* #define PC_RELATIVE */ /* Seems to break things. */
#define BASE_REG_NEEDED /* Seems to fix problem where external mode
* syntax was being generated.
*/
/* ------------ Debugging Support ----------------------------- */
/* The sdb support does not yet work with UTek. Need to teach gcc
* how to create sdb type stabs as well as dbx style stabs.
*/
#define DBX_DEBUGGING_INFO
/* #define SDB_DEBUGGING_INFO */
/* Act the same as the UTek complier: -g for dbx, -go for sdb.
* This is used in toplev.c.
*/
#define PREFERRED_DEBUGGING_TYPE \
((len > 1 && !strncmp(str, "go", len)) ? SDB_DEBUG : DBX_DEBUG )
/* Sequent has some changes in the format of DBX symbols. */
#define DBX_NO_XREFS 1
/* Don't split DBX symbols into continuations. */
#define DBX_CONTIN_LENGTH 0
/* ------------------------------------------- */
#define TARGET_DEFAULT 1
/* These control the C++ compiler somehow. */
#define FASCIST_ASSEMBLER
#define USE_COLLECT
/* Print subsidiary information on the compiler version in use. */
#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (ns32k, UTek syntax)");
/* The tek6100.h and tek6200.h files add stratos or merlin respectively. */
#define CPP_PREDEFINES_Tek6000 \
"-Dns16000 -Dns32000 -Dns32k -Dns32016 -DUTek -DUTEK -Dbsd -DBSD"
#undef CPP_PREDEFINES
#define CPP_PREDEFINES "CPP_PREDEFINES_Tek6000"
/* This is how to align the code that follows an unconditional branch.
Don't define it, since it confuses the assembler (we hear). */
#undef ASM_OUTPUT_ALIGN_CODE
/* Assembler pseudo-op for shared data segment. */
#define SHARED_SECTION_ASM_OP ".shdata"
#ifdef UTEK_ASM
#undef FUNCTION_PROLOGUE
/* This differs from the one in ns32k.h in printing a bitmask
rather than a register list in the enter or save instruction. */
#define FUNCTION_PROLOGUE(FILE, SIZE) \
{ register int regno, g_regs_used = 0; \
int used_regs_buf[8], *bufp = used_regs_buf; \
int used_fregs_buf[8], *fbufp = used_fregs_buf; \
extern char call_used_regs[]; \
MAIN_FUNCTION_PROLOGUE; \
for (regno = 0; regno < 8; regno++) \
if (regs_ever_live[regno] \
&& ! call_used_regs[regno]) \
{ \
*bufp++ = regno; g_regs_used++; \
} \
*bufp = -1; \
for (; regno < 16; regno++) \
if (regs_ever_live[regno] && !call_used_regs[regno]) { \
*fbufp++ = regno; \
} \
*fbufp = -1; \
bufp = used_regs_buf; \
if (frame_pointer_needed) \
fprintf (FILE, "\tenter "); \
else if (g_regs_used) \
fprintf (FILE, "\tsave "); \
if (frame_pointer_needed || g_regs_used) \
{ \
char mask = 0; \
while (*bufp >= 0) \
mask |= 1 << *bufp++; \
fprintf (FILE, "$0x%x", (int) mask & 0xff); \
} \
if (frame_pointer_needed) \
fprintf (FILE, ",$%d\n", SIZE); \
else if (g_regs_used) \
fprintf (FILE, "\n"); \
fbufp = used_fregs_buf; \
while (*fbufp >= 0) \
{ \
if ((*fbufp & 1) || (fbufp[0] != fbufp[1] - 1)) \
fprintf (FILE, "\tmovf f%d,tos\n", *fbufp++ - 8); \
else \
{ \
fprintf (FILE, "\tmovl f%d,tos\n", fbufp[0] - 8); \
fbufp += 2; \
} \
} \
}
#undef FUNCTION_EPILOGUE
/* This differs from the one in ns32k.h in printing a bitmask
rather than a register list in the exit or restore instruction. */
#define FUNCTION_EPILOGUE(FILE, SIZE) \
{ register int regno, g_regs_used = 0, f_regs_used = 0; \
int used_regs_buf[8], *bufp = used_regs_buf; \
int used_fregs_buf[8], *fbufp = used_fregs_buf; \
extern char call_used_regs[]; \
*fbufp++ = -2; \
for (regno = 8; regno < 16; regno++) \
if (regs_ever_live[regno] && !call_used_regs[regno]) { \
*fbufp++ = regno; f_regs_used++; \
} \
fbufp--; \
for (regno = 0; regno < 8; regno++) \
if (regs_ever_live[regno] \
&& ! call_used_regs[regno]) \
{ \
*bufp++ = regno; g_regs_used++; \
} \
while (fbufp > used_fregs_buf) \
{ \
if ((*fbufp & 1) && fbufp[0] == fbufp[-1] + 1) \
{ \
fprintf (FILE, "\tmovl tos,f%d\n", fbufp[-1] - 8); \
fbufp -= 2; \
} \
else fprintf (FILE, "\tmovf tos,f%d\n", *fbufp-- - 8); \
} \
if (frame_pointer_needed) \
fprintf (FILE, "\texit "); \
else if (g_regs_used) \
fprintf (FILE, "\trestore "); \
if (g_regs_used || frame_pointer_needed) \
{ \
char mask = 0; \
\
while (bufp > used_regs_buf) \
{ \
/* Utek assembler takes care of reversing this */ \
mask |= 1 << *--bufp; \
} \
fprintf (FILE, "$0x%x\n", (int) mask & 0xff); \
} \
if (current_function_pops_args) \
fprintf (FILE, "\tret $%d\n", current_function_pops_args); \
else fprintf (FILE, "\tret $0\n"); }
/* UTek assembler needs "ret $0", not "ret 0". */
#undef TRANSFER_FROM_TRAMPOLINE
#define TRANSFER_FROM_TRAMPOLINE \
void \
__transfer_from_trampoline () \
{ \
asm ("___trampoline:"); \
asm ("movd 16(r2),tos"); \
asm ("movd 12(r2),r2"); \
asm ("ret $0"); \
}
#endif /* UTEK_ASM */
#undef PRINT_OPERAND_ADDRESS
#define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address(FILE, ADDR)
/* The UTek library supplies bcopy() and friends, not memcpy(). */
#ifdef TARGET_MEM_FUNCTIONS
#undef TARGET_MEM_FUNCTIONS
#endif
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