Initial revision

1 files changed, 1297 insertions, 0 deletions

diff --git a/gas/config/tc-sparc.c b/gas/config/tc-sparc.c
new file mode 100644
index 0000000..bd71fa8
--- /dev/null
+++ b/gas/config/tc-sparc.c
@@ -0,0 +1,1297 @@
+/* tc-sparc.c -- Assemble for the SPARC
+   Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
+   
+   This file is part of GAS, the GNU Assembler.
+   
+   GAS 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.
+   
+   GAS 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 GAS; see the file COPYING.  If not, write to
+   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* static const char rcsid[] = "$Id$"; */
+
+#include <stdio.h>
+#include <ctype.h>
+
+#include "as.h"
+
+/* careful, this file includes data *declarations* */
+#include "sparc-opcode.h"
+
+void md_begin();
+void md_end();
+void md_number_to_chars();
+void md_assemble();
+char *md_atof();
+void md_convert_frag();
+void md_create_short_jump();
+void md_create_long_jump();
+int md_estimate_size_before_relax();
+void md_ri_to_chars();
+symbolS *md_undefined_symbol();
+static void sparc_ip();
+
+const relax_typeS md_relax_table[] = {
+	0 };
+
+/* handle of the OPCODE hash table */
+static struct hash_control *op_hash = NULL;
+
+static void s_seg(), s_proc(), s_data1(), s_reserve(), s_common();
+extern void s_globl(), s_long(), s_short(), s_space(), cons();
+extern void s_align_bytes(), s_ignore();
+
+const pseudo_typeS md_pseudo_table[] = {
+	{ "align",	s_align_bytes,	0	},    /* Defaulting is invalid (0) */
+	{ "common",	s_common,	0	},
+	{ "global",	s_globl,	0	},
+	{ "half",	cons,		2	},
+	{ "optim",	s_ignore,	0	},
+	{ "proc",	s_proc,		0	},
+	{ "reserve",	s_reserve,	0	},
+	{ "seg",	s_seg,		0	},
+	{ "skip",	s_space,	0	},
+	{ "word",	cons,		4	},
+	{ NULL,	0,		0	},
+};
+
+int md_short_jump_size = 4;
+int md_long_jump_size = 4;
+int md_reloc_size = 12;			/* Size of relocation record */
+
+/* This array holds the chars that always start a comment.  If the
+   pre-processor is disabled, these aren't very useful */
+char comment_chars[] = "!";	/* JF removed '|' from comment_chars */
+
+/* This array holds the chars that only start a comment at the beginning of
+   a line.  If the line seems to have the form '# 123 filename'
+   .line and .file directives will appear in the pre-processed output */
+/* Note that input_file.c hand checks for '#' at the beginning of the
+   first line of the input file.  This is because the compiler outputs
+   #NO_APP at the beginning of its output. */
+/* Also note that comments started like this one will always work */
+char line_comment_chars[] = "#";
+
+/* Chars that can be used to separate mant from exp in floating point nums */
+char EXP_CHARS[] = "eE";
+
+/* Chars that mean this number is a floating point constant */
+/* As in 0f12.456 */
+/* or    0d1.2345e12 */
+char FLT_CHARS[] = "rRsSfFdDxXpP";
+
+/* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
+   changed in read.c .  Ideally it shouldn't have to know about it at all,
+   but nothing is ideal around here.
+   */
+
+static unsigned char octal[256];
+#define isoctal(c)  octal[c]
+static unsigned char toHex[256];
+
+/*
+ *  anull bit - causes the branch delay slot instructions to not be executed
+ */
+#define ANNUL       (1 << 29)
+
+struct sparc_it {
+	char *error;
+	unsigned long opcode;
+	struct nlist *nlistp;
+	expressionS exp;
+	int pcrel;
+	enum reloc_type reloc;
+} the_insn, set_insn;
+
+#ifdef __STDC__
+#if 0
+static void print_insn(struct sparc_it *insn);
+#endif
+static int getExpression(char *str);
+#else
+#if 0
+static void print_insn();
+#endif
+static int getExpression();
+#endif
+static char *expr_end;
+static int special_case;
+
+/*
+ * Instructions that require wierd handling because they're longer than
+ * 4 bytes.
+ */
+#define	SPECIAL_CASE_SET	1
+#define	SPECIAL_CASE_FDIV	2
+
+/*
+ * sort of like s_lcomm
+ *
+ */
+static void s_reserve() {
+	char *name;
+	char c;
+	char *p;
+	int temp;
+	symbolS *symbolP;
+	
+	name = input_line_pointer;
+	c = get_symbol_end();
+	p = input_line_pointer;
+	*p = c;
+	SKIP_WHITESPACE();
+	if (* input_line_pointer != ',') {
+		as_bad("Expected comma after name");
+		ignore_rest_of_line();
+		return;
+	}
+	input_line_pointer ++;
+	if ((temp = get_absolute_expression()) < 0) {
+		as_bad("BSS length (%d.) <0! Ignored.", temp);
+		ignore_rest_of_line();
+		return;
+	}
+	*p = 0;
+	symbolP = symbol_find_or_make(name);
+	*p = c;
+	if (strncmp(input_line_pointer, ",\"bss\"", 6) != 0) {
+		as_bad("bad .reserve segment: `%s'", input_line_pointer);
+		return;
+	}
+	input_line_pointer += 6;
+	if (S_GET_OTHER(symbolP) == 0
+	    && S_GET_DESC(symbolP) == 0
+	    && ((S_GET_TYPE(symbolP) == N_BSS
+		 && S_GET_VALUE(symbolP) == local_bss_counter)
+		|| !S_IS_DEFINED(symbolP))) {
+		S_SET_VALUE(symbolP, local_bss_counter);
+		S_SET_SEGMENT(symbolP, SEG_BSS);
+		symbolP->sy_frag  = & bss_address_frag;
+		local_bss_counter += temp;
+	} else {
+		as_warn("Ignoring attempt to re-define symbol from %d. to %d.",
+			S_GET_VALUE(symbolP), local_bss_counter);
+	}
+	demand_empty_rest_of_line();
+	return;
+} /* s_reserve() */
+
+static void s_common() {
+	register char *name;
+	register char c;
+	register char *p;
+	register int temp;
+	register symbolS *	symbolP;
+	
+	name = input_line_pointer;
+	c = get_symbol_end();
+	/* just after name is now '\0' */
+	p = input_line_pointer;
+	*p = c;
+	SKIP_WHITESPACE();
+	if (* input_line_pointer != ',') {
+		as_bad("Expected comma after symbol-name");
+		ignore_rest_of_line();
+		return;
+	}
+	input_line_pointer ++; /* skip ',' */
+	if ((temp = get_absolute_expression ()) < 0) {
+		as_bad(".COMMon length (%d.) <0! Ignored.", temp);
+		ignore_rest_of_line();
+		return;
+	}
+	*p = 0;
+	symbolP = symbol_find_or_make(name);
+	*p = c;
+	if (S_IS_DEFINED(symbolP)) {
+		as_bad("Ignoring attempt to re-define symbol");
+		ignore_rest_of_line();
+		return;
+	}
+	if (S_GET_VALUE(symbolP) != 0) {
+		if (S_GET_VALUE(symbolP) != temp) {
+			as_warn("Length of .comm \"%s\" is already %d. Not changed to %d.",
+				S_GET_NAME(symbolP), S_GET_VALUE(symbolP), temp);
+		}
+	} else {
+		S_SET_VALUE(symbolP, temp);
+		S_SET_EXTERNAL(symbolP);
+	}
+	know(symbolP->sy_frag == &zero_address_frag);
+	if (strncmp(input_line_pointer, ",\"bss\"", 6) != 0
+	    && strncmp(input_line_pointer, ",\"data\"", 7) != 0) {
+		p=input_line_pointer;
+		while(*p && *p!='\n')
+		    p++;
+		c= *p;
+		*p='\0';
+		as_bad("bad .common segment: `%s'", input_line_pointer);
+		*p=c;
+		return;
+	}
+	input_line_pointer += 6 + (input_line_pointer[2] == 'd'); /* Skip either */
+	demand_empty_rest_of_line();
+	return;
+} /* s_common() */
+
+static void s_seg() {
+	
+	if (strncmp(input_line_pointer, "\"text\"", 6) == 0) {
+		input_line_pointer += 6;
+		s_text();
+		return;
+	}
+	if (strncmp(input_line_pointer, "\"data\"", 6) == 0) {
+		input_line_pointer += 6;
+		s_data();
+		return;
+	}
+	if (strncmp(input_line_pointer, "\"data1\"", 7) == 0) {
+		input_line_pointer += 7;
+		s_data1();
+		return;
+	}
+	if (strncmp(input_line_pointer, "\"bss\"", 5) == 0) {
+		input_line_pointer += 5;
+		/* We only support 2 segments -- text and data -- for now, so
+		   things in the "bss segment" will have to go into data for now.
+		   You can still allocate SEG_BSS stuff with .lcomm or .reserve. */
+		subseg_new(SEG_DATA, 255);	/* FIXME-SOMEDAY */
+		return;
+	}
+	as_bad("Unknown segment type");
+	demand_empty_rest_of_line();
+	return;
+} /* s_seg() */
+
+static void s_data1() {
+	subseg_new(SEG_DATA, 1);
+	demand_empty_rest_of_line();
+	return;
+} /* s_data1() */
+
+static void s_proc() {
+	extern char is_end_of_line[];
+	
+	while (!is_end_of_line[*input_line_pointer]) {
+		++input_line_pointer;
+	}
+	++input_line_pointer;
+	return;
+} /* s_proc() */
+
+/* This function is called once, at assembler startup time.  It should
+   set up all the tables, etc. that the MD part of the assembler will need. */
+void md_begin() {
+	register char *retval = NULL;
+	int lose = 0;
+	register unsigned int i = 0;
+	
+	op_hash = hash_new();
+	if (op_hash == NULL)
+	    as_fatal("Virtual memory exhausted");
+	
+	while (i < NUMOPCODES) {
+		const char *name = sparc_opcodes[i].name;
+		retval = hash_insert(op_hash, name, &sparc_opcodes[i]);
+		if(retval != NULL && *retval != '\0') {
+			fprintf (stderr, "internal error: can't hash `%s': %s\n",
+				 sparc_opcodes[i].name, retval);
+			lose = 1;
+		}
+		do
+		    {
+			    if (sparc_opcodes[i].match & sparc_opcodes[i].lose) {
+				    fprintf (stderr, "internal error: losing opcode: `%s' \"%s\"\n",
+					     sparc_opcodes[i].name, sparc_opcodes[i].args);
+				    lose = 1;
+			    }
+			    ++i;
+		    } while (i < NUMOPCODES
+			     && !strcmp(sparc_opcodes[i].name, name));
+	}
+	
+	if (lose)
+	    as_fatal("Broken assembler.  No assembly attempted.");
+	
+	for (i = '0'; i < '8'; ++i)
+	    octal[i] = 1;
+	for (i = '0'; i <= '9'; ++i)
+	    toHex[i] = i - '0';
+	for (i = 'a'; i <= 'f'; ++i)
+	    toHex[i] = i + 10 - 'a';
+	for (i = 'A'; i <= 'F'; ++i)
+	    toHex[i] = i + 10 - 'A';
+} /* md_begin() */
+
+void md_end() {
+	return;
+} /* md_end() */
+
+void md_assemble(str)
+char *str;
+{
+	char *toP;
+	int rsd;
+	
+	know(str);
+	sparc_ip(str);
+	
+	/* See if "set" operand is absolute and small; skip sethi if so. */
+	if (special_case == SPECIAL_CASE_SET && the_insn.exp.X_seg == SEG_ABSOLUTE) {
+		if (the_insn.exp.X_add_number >= -(1<<12)
+		    && the_insn.exp.X_add_number <   (1<<12)) {
+			the_insn.opcode = 0x80102000 		/* or %g0,imm,... */
+			    | (the_insn.opcode & 0x3E000000)	/* dest reg */
+				| (the_insn.exp.X_add_number & 0x1FFF); /* imm */
+			special_case = 0;		/* No longer special */
+			the_insn.reloc = NO_RELOC;	/* No longer relocated */
+		}
+	}
+	
+	toP = frag_more(4);
+	/* put out the opcode */
+	md_number_to_chars(toP, the_insn.opcode, 4);
+	
+	/* put out the symbol-dependent stuff */
+	if (the_insn.reloc != NO_RELOC) {
+		fix_new(frag_now,                           /* which frag */
+			(toP - frag_now->fr_literal), /* where */
+			4,                                  /* size */
+			the_insn.exp.X_add_symbol,
+			the_insn.exp.X_subtract_symbol,
+			the_insn.exp.X_add_number,
+			the_insn.pcrel,
+			the_insn.reloc);
+	}
+	switch (special_case) {
+		
+	case SPECIAL_CASE_SET:
+		special_case = 0;
+		assert(the_insn.reloc == RELOC_HI22);
+		/* See if "set" operand has no low-order bits; skip OR if so. */
+		if (the_insn.exp.X_seg == SEG_ABSOLUTE
+		    && ((the_insn.exp.X_add_number & 0x3FF) == 0))
+		    return;
+		toP = frag_more(4);
+		rsd = (the_insn.opcode >> 25) & 0x1f;
+		the_insn.opcode = 0x80102000 | (rsd << 25) | (rsd << 14);
+		md_number_to_chars(toP, the_insn.opcode, 4);
+		fix_new(frag_now,                           /* which frag */
+			(toP - frag_now->fr_literal),       /* where */
+			4,                                  /* size */
+			the_insn.exp.X_add_symbol,
+			the_insn.exp.X_subtract_symbol,
+			the_insn.exp.X_add_number,
+			the_insn.pcrel,
+			RELOC_LO10);
+		return;
+		
+	case SPECIAL_CASE_FDIV:
+		/* According to information leaked from Sun, the "fdiv" instructions
+		   on early SPARC machines would produce incorrect results sometimes.
+		   The workaround is to add an fmovs of the destination register to
+		   itself just after the instruction.  This was true on machines
+		   with Weitek 1165 float chips, such as the Sun-4/260 and /280. */
+		special_case = 0;
+		assert(the_insn.reloc == NO_RELOC);
+		toP = frag_more(4);
+		rsd = (the_insn.opcode >> 25) & 0x1f;
+		the_insn.opcode = 0x81A00020 | (rsd << 25) | rsd;  /* fmovs dest,dest */
+		md_number_to_chars(toP, the_insn.opcode, 4);
+		return;
+		
+	case 0:
+		return;
+		
+	default:
+		abort();
+	}
+} /* md_assemble() */
+
+static void sparc_ip(str)
+char *str;
+{
+	char *s;
+	const char *args;
+	char c;
+	struct sparc_opcode *insn;
+	char *argsStart;
+	unsigned long opcode;
+	unsigned int mask;
+	int match = 0;
+	int comma = 0;
+	
+	for (s = str; islower(*s) || (*s >= '0' && *s <= '3'); ++s)
+	    ;
+	switch (*s) {
+		
+	case '\0':
+		break;
+		
+	case ',':
+		comma = 1;
+		
+		/*FALLTHROUGH */
+		
+	case ' ':
+		*s++ = '\0';
+		break;
+		
+	default:
+		as_bad("Unknown opcode: `%s'", str);
+		exit(1);
+	}
+	if ((insn = (struct sparc_opcode *) hash_find(op_hash, str)) == NULL) {
+		as_bad("Unknown opcode: `%s'", str);
+		return;
+	}
+	if (comma) {
+		*--s = ',';
+	}
+	argsStart = s;
+	for (;;) {
+		opcode = insn->match;
+		bzero(&the_insn, sizeof(the_insn));
+		the_insn.reloc = NO_RELOC;
+		
+		/*
+		 * Build the opcode, checking as we go to make
+		 * sure that the operands match
+		 */
+		for (args = insn->args; ; ++args) {
+			switch (*args) {
+				
+			case '\0':  /* end of args */
+				if (*s == '\0') {
+					match = 1;
+				}
+				break;
+				
+			case '+':
+				if (*s == '+') {
+					++s;
+					continue;
+				}
+				if (*s == '-') {
+					continue;
+				}
+				break;
+				
+			case '[':   /* these must match exactly */
+			case ']':
+			case ',':
+			case ' ':
+				if (*s++ == *args)
+				    continue;
+				break;
+				
+			case '#':   /* must be at least one digit */
+				if (isdigit(*s++)) {
+					while (isdigit(*s)) {
+						++s;
+					}
+					continue;
+				}
+				break;
+				
+			case 'C':   /* coprocessor state register */
+				if (strncmp(s, "%csr", 4) == 0) {
+					s += 4;
+					continue;
+				}
+				break;
+				
+			case 'b':    /* next operand is a coprocessor register */
+			case 'c':
+			case 'D':
+				if (*s++ == '%' && *s++ == 'c' && isdigit(*s)) {
+					mask = *s++;
+					if (isdigit(*s)) {
+						mask = 10 * (mask - '0') + (*s++ - '0');
+						if (mask >= 32) {
+							break;
+						}
+					} else {
+						mask -= '0';
+					}
+					switch (*args) {
+						
+					case 'b':
+						opcode |= mask << 14;
+						continue;
+						
+					case 'c':
+						opcode |= mask;
+						continue;
+						
+					case 'D':
+						opcode |= mask << 25;
+						continue;
+					}
+				}
+				break;
+				
+			case 'r':   /* next operand must be a register */
+			case '1':
+			case '2':
+			case 'd':
+				if (*s++ == '%') {
+					switch (c = *s++) {
+						
+					case 'f':   /* frame pointer */
+						if (*s++ == 'p') {
+							mask = 0x1e;
+							break;
+						}
+						goto error;
+						
+					case 'g':   /* global register */
+						if (isoctal(c = *s++)) {
+							mask = c - '0';
+							break;
+						}
+						goto error;
+						
+					case 'i':   /* in register */
+						if (isoctal(c = *s++)) {
+							mask = c - '0' + 24;
+							break;
+						}
+						goto error;
+						
+					case 'l':   /* local register */
+						if (isoctal(c = *s++)) {
+							mask= (c - '0' + 16) ;
+							break;
+						}
+						goto error;
+						
+					case 'o':   /* out register */
+						if (isoctal(c = *s++)) {
+							mask= (c - '0' + 8) ;
+							break;
+						}
+						goto error;
+						
+					case 's':   /* stack pointer */
+						if (*s++ == 'p') {
+							mask= 0xe;
+							break;
+						}
+						goto error;
+						
+					case 'r': /* any register */
+						if (!isdigit(c = *s++)) {
+							goto error;
+						}
+						/* FALLTHROUGH */
+					case '0': case '1': case '2': case '3': case '4':
+					case '5': case '6': case '7': case '8': case '9':
+						if (isdigit(*s)) {
+							if ((c = 10 * (c - '0') + (*s++ - '0')) >= 32) {
+								goto error;
+							}
+						} else {
+							c -= '0';
+						}
+						mask= c;
+						break;
+						
+					default:
+						goto error;
+					}
+					/*
+					 * Got the register, now figure out where
+					 * it goes in the opcode.
+					 */
+					switch (*args) {
+						
+					case '1':
+						opcode |= mask << 14;
+						continue;
+						
+					case '2':
+						opcode |= mask;
+						continue;
+						
+					case 'd':
+						opcode |= mask << 25;
+						continue;
+						
+					case 'r':
+						opcode |= (mask << 25) | (mask << 14);
+						continue;
+					}
+				}
+				break;
+				
+			case 'e':    /* next operand is a floating point register */
+			case 'f':
+			case 'g':
+				if (*s++ == '%' && *s++ == 'f' && isdigit(*s)) {
+					mask = *s++;
+					if (isdigit(*s)) {
+						mask = 10 * (mask - '0') + (*s++ - '0');
+						if (mask >= 32) {
+							break;
+						}
+					} else {
+						mask -= '0';
+					}
+					switch (*args) {
+						
+					case 'e':
+						opcode |= mask << 14;
+						continue;
+						
+					case 'f':
+						opcode |= mask;
+						continue;
+						
+					case 'g':
+						opcode |= mask << 25;
+						continue;
+					}
+				}
+				break;
+				
+			case 'F':
+				if (strncmp(s, "%fsr", 4) == 0) {
+					s += 4;
+					continue;
+				}
+				break;
+				
+			case 'h':       /* high 22 bits */
+				the_insn.reloc = RELOC_HI22;
+				goto immediate;
+				
+			case 'l':   /* 22 bit PC relative immediate */
+				the_insn.reloc = RELOC_WDISP22;
+				the_insn.pcrel = 1;
+				goto immediate;
+				
+			case 'L':   /* 30 bit immediate */
+				the_insn.reloc = RELOC_WDISP30;
+				the_insn.pcrel = 1;
+				goto immediate;
+				
+			case 'i':   /* 13 bit immediate */
+				the_insn.reloc = RELOC_BASE13;
+				
+				/*FALLTHROUGH */
+				
+			immediate:
+				if(*s==' ')
+				    s++;
+				if (*s == '%') {
+					if ((c = s[1]) == 'h' && s[2] == 'i') {
+						the_insn.reloc = RELOC_HI22;
+						s+=3;
+					} else if (c == 'l' && s[2] == 'o') {
+						the_insn.reloc = RELOC_LO10;
+						s+=3;
+					} else
+					    break;
+				}
+				/* Note that if the getExpression() fails, we will still have
+				   created U entries in the symbol table for the 'symbols'
+				   in the input string.  Try not to create U symbols for
+				   registers, etc. */
+				{
+					/* This stuff checks to see if the expression ends
+					   in +%reg If it does, it removes the register from
+					   the expression, and re-sets 's' to point to the
+					   right place */
+					
+					char *s1;
+					
+					for(s1=s;*s1 && *s1!=','&& *s1!=']';s1++)
+					    ;
+					
+					if(s1!=s && isdigit(s1[-1])) {
+						if(s1[-2]=='%' && s1[-3]=='+') {
+							s1-=3;
+							*s1='\0';
+							(void)getExpression(s);
+							*s1='+';
+							s=s1;
+							continue;
+						} else if(strchr("goli0123456789",s1[-2]) && s1[-3]=='%' && s1[-4]=='+') {
+							s1-=4;
+							*s1='\0';
+							(void)getExpression(s);
+							*s1='+';
+							s=s1;
+							continue;
+						}
+					}
+				}
+				(void)getExpression(s);
+				s = expr_end;
+				continue;
+				
+			case 'a':
+				if (*s++ == 'a') {
+					opcode |= ANNUL;
+					continue;
+				}
+				break;
+				
+			case 'A':       /* alternate space */
+				if (isdigit(*s)) {
+					long num;
+					
+					num=0;
+					while (isdigit(*s)) {
+						num= num*10 + *s-'0';
+						++s;
+					}
+					opcode |= num<<5;
+					continue;
+				}
+				break;
+				/* abort(); */
+				
+			case 'p':
+				if (strncmp(s, "%psr", 4) == 0) {
+					s += 4;
+					continue;
+				}
+				break;
+				
+			case 'q':   /* floating point queue */
+				if (strncmp(s, "%fq", 3) == 0) {
+					s += 3;
+					continue;
+				}
+				break;
+				
+			case 'Q':   /* coprocessor queue */
+				if (strncmp(s, "%cq", 3) == 0) {
+					s += 3;
+					continue;
+				}
+				break;
+				
+			case 'S':
+				if (strcmp(str, "set") == 0) {
+					special_case = SPECIAL_CASE_SET;
+					continue;
+				} else if (strncmp(str, "fdiv", 4) == 0) {
+					special_case = SPECIAL_CASE_FDIV;
+					continue;
+				}
+				break;
+				
+			case 't':
+				if (strncmp(s, "%tbr", 4) != 0)
+				    break;
+				s += 4;
+				continue;
+				
+			case 'w':
+				if (strncmp(s, "%wim", 4) != 0)
+				    break;
+				s += 4;
+				continue;
+				
+			case 'y':
+				if (strncmp(s, "%y", 2) != 0)
+				    break;
+				s += 2;
+				continue;
+				
+			default:
+				abort();
+			}
+			break;
+		}
+	error:
+		if (match == 0) {
+			/* Args don't match. */
+			if (((unsigned) (&insn[1] - sparc_opcodes)) < NUMOPCODES
+			    && !strcmp(insn->name, insn[1].name)) {
+				++insn;
+				s = argsStart;
+				continue;
+			}
+			else
+			    {
+				    as_bad("Illegal operands");
+				    return;
+			    }
+		}
+		break;
+	}
+	
+	the_insn.opcode = opcode;
+	return;
+} /* sparc_ip() */
+
+static int getExpression(str)
+char *str;
+{
+	char *save_in;
+	segT seg;
+	
+	save_in = input_line_pointer;
+	input_line_pointer = str;
+	switch (seg = expression(&the_insn.exp)) {
+		
+	case SEG_ABSOLUTE:
+	case SEG_TEXT:
+	case SEG_DATA:
+	case SEG_BSS:
+	case SEG_UNKNOWN:
+	case SEG_DIFFERENCE:
+	case SEG_BIG:
+	case SEG_ABSENT:
+		break;
+		
+	default:
+		the_insn.error = "bad segment";
+		expr_end = input_line_pointer;
+		input_line_pointer=save_in;
+		return 1;
+	}
+	expr_end = input_line_pointer;
+	input_line_pointer = save_in;
+	return 0;
+} /* getExpression() */
+
+
+/*
+  This is identical to the md_atof in m68k.c.  I think this is right,
+  but I'm not sure.
+  
+  Turn a string in input_line_pointer into a floating point constant of type
+  type, and store the appropriate bytes in *litP.  The number of LITTLENUMS
+  emitted is stored in *sizeP .  An error message is returned, or NULL on OK.
+  */
+
+/* Equal to MAX_PRECISION in atof-ieee.c */
+#define MAX_LITTLENUMS 6
+
+char *md_atof(type,litP,sizeP)
+char type;
+char *litP;
+int *sizeP;
+{
+	int prec;
+	LITTLENUM_TYPE words[MAX_LITTLENUMS];
+	LITTLENUM_TYPE *wordP;
+	char *t;
+	char *atof_ieee();
+	
+	switch(type) {
+		
+	case 'f':
+	case 'F':
+	case 's':
+	case 'S':
+		prec = 2;
+		break;
+		
+	case 'd':
+	case 'D':
+	case 'r':
+	case 'R':
+		prec = 4;
+		break;
+		
+	case 'x':
+	case 'X':
+		prec = 6;
+		break;
+		
+	case 'p':
+	case 'P':
+		prec = 6;
+		break;
+		
+	default:
+		*sizeP=0;
+		return "Bad call to MD_ATOF()";
+	}
+	t=atof_ieee(input_line_pointer,type,words);
+	if(t)
+	    input_line_pointer=t;
+	*sizeP=prec * sizeof(LITTLENUM_TYPE);
+	for(wordP=words;prec--;) {
+		md_number_to_chars(litP,(long)(*wordP++),sizeof(LITTLENUM_TYPE));
+		litP+=sizeof(LITTLENUM_TYPE);
+	}
+	return "";	/* Someone should teach Dean about null pointers */
+} /* md_atof() */
+
+/*
+ * Write out big-endian.
+ */
+void md_number_to_chars(buf,val,n)
+char *buf;
+long val;
+int n;
+{
+	
+	switch(n) {
+		
+	case 4:
+		*buf++ = val >> 24;
+		*buf++ = val >> 16;
+	case 2:
+		*buf++ = val >> 8;
+	case 1:
+		*buf = val;
+		break;
+		
+	default:
+		abort();
+	}
+	return;
+} /* md_number_to_chars() */
+
+/* Apply a fixS to the frags, now that we know the value it ought to
+   hold. */
+
+void md_apply_fix(fixP, val)
+fixS *fixP;
+long val;
+{
+	char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
+	
+	assert(fixP->fx_size == 4);
+	assert(fixP->fx_r_type < NO_RELOC);
+	
+	fixP->fx_addnumber = val;	/* Remember value for emit_reloc */
+	
+	/*
+	 * This is a hack.  There should be a better way to
+	 * handle this.
+	 */
+	if (fixP->fx_r_type == RELOC_WDISP30 && fixP->fx_addsy) {
+		val += fixP->fx_where + fixP->fx_frag->fr_address;
+	}
+	
+	switch (fixP->fx_r_type) {
+		
+	case RELOC_32:
+		buf[0] = 0; /* val >> 24; */
+		buf[1] = 0; /* val >> 16; */
+		buf[2] = 0; /* val >> 8; */
+		buf[3] = 0; /* val; */
+		break;
+		
+#if 0
+	case RELOC_8:         /* These don't seem to ever be needed. */
+	case RELOC_16:
+	case RELOC_DISP8:
+	case RELOC_DISP16:
+	case RELOC_DISP32:
+#endif
+	case RELOC_WDISP30:
+		val = (val >>= 2) + 1;
+		buf[0] |= (val >> 24) & 0x3f;
+		buf[1]= (val >> 16);
+		buf[2] = val >> 8;
+		buf[3] = val;
+		break;
+		
+	case RELOC_HI22:
+		if(!fixP->fx_addsy) {
+			buf[1] |= (val >> 26) & 0x3f;
+			buf[2] = val >> 18;
+			buf[3] = val >> 10;
+		} else {
+			buf[2]=0;
+			buf[3]=0;
+		}
+		break;
+#if 0
+	case RELOC_22:
+	case RELOC_13:
+#endif
+	case RELOC_LO10:
+		if(!fixP->fx_addsy) {
+			buf[2] |= (val >> 8) & 0x03;
+			buf[3] = val;
+		} else
+		    buf[3]=0;
+		break;
+#if 0
+	case RELOC_SFA_BASE:
+	case RELOC_SFA_OFF13:
+	case RELOC_BASE10:
+#endif
+	case RELOC_BASE13:
+		buf[2] |= (val >> 8) & 0x1f;
+		buf[3] = val;
+		break;
+		
+	case RELOC_WDISP22:
+		val = (val >>= 2) + 1;
+		/* FALLTHROUGH */
+	case RELOC_BASE22:
+		buf[1] |= (val >> 16) & 0x3f;
+		buf[2] = val >> 8;
+		buf[3] = val;
+		break;
+		
+#if 0
+	case RELOC_PC10:
+	case RELOC_PC22:
+	case RELOC_JMP_TBL:
+	case RELOC_SEGOFF16:
+	case RELOC_GLOB_DAT:
+	case RELOC_JMP_SLOT:
+	case RELOC_RELATIVE:
+#endif
+		
+	case NO_RELOC:
+	default:
+		as_bad("bad relocation type: 0x%02x", fixP->fx_r_type);
+		break;
+	}
+} /* md_apply_fix() */
+
+/* should never be called for sparc */
+void md_create_short_jump(ptr, from_addr, to_addr, frag, to_symbol)
+char *ptr;
+long from_addr;
+long to_addr;
+fragS *frag;
+symbolS *to_symbol;
+{
+	fprintf(stderr, "sparc_create_short_jmp\n");
+	abort();
+} /* md_create_short_jump() */
+
+/* Translate internal representation of relocation info to target format.
+   
+   On sparc: first 4 bytes are normal unsigned long address, next three
+   bytes are index, most sig. byte first.  Byte 7 is broken up with
+   bit 7 as external, bits 6 & 5 unused, and the lower
+   five bits as relocation type.  Next 4 bytes are long addend. */
+/* Thanx and a tip of the hat to Michael Bloom, mb@ttidca.tti.com */
+void md_ri_to_chars(the_bytes, ri)
+char *the_bytes;
+struct reloc_info_generic *ri;
+{
+	/* this is easy */
+	md_number_to_chars(the_bytes, ri->r_address, 4);
+	/* now the fun stuff */
+	the_bytes[4] = (ri->r_index >> 16) & 0x0ff;
+	the_bytes[5] = (ri->r_index >> 8) & 0x0ff;
+	the_bytes[6] = ri->r_index & 0x0ff;
+	the_bytes[7] = ((ri->r_extern << 7)  & 0x80) | (0 & 0x60) | (ri->r_type & 0x1F);
+	/* Also easy */
+	md_number_to_chars(&the_bytes[8], ri->r_addend, 4);
+} /* md_ri_to_chars() */
+
+/* should never be called for sparc */
+void md_convert_frag(fragP)
+register fragS *fragP;
+{
+	fprintf(stderr, "sparc_convert_frag\n");
+	abort();
+} /* md_convert_frag() */
+
+/* should never be called for sparc */
+void md_create_long_jump(ptr, from_addr, to_addr, frag, to_symbol)
+char *ptr;
+long from_addr, to_addr;
+fragS	*frag;
+symbolS	*to_symbol;
+{
+	fprintf(stderr, "sparc_create_long_jump\n");
+	abort();
+} /* md_create_long_jump() */
+
+/* should never be called for sparc */
+int md_estimate_size_before_relax(fragP, segtype)
+fragS *fragP;
+segT segtype;
+{
+	fprintf(stderr, "sparc_estimate_size_before_relax\n");
+	abort();
+	return 0;
+} /* md_estimate_size_before_relax() */
+
+#if 0
+/* for debugging only */
+static void print_insn(insn)
+struct sparc_it *insn;
+{
+	char *Reloc[] = {
+		"RELOC_8",
+		"RELOC_16",
+		"RELOC_32",
+		"RELOC_DISP8",
+		"RELOC_DISP16",
+		"RELOC_DISP32",
+		"RELOC_WDISP30",
+		"RELOC_WDISP22",
+		"RELOC_HI22",
+		"RELOC_22",
+		"RELOC_13",
+		"RELOC_LO10",
+		"RELOC_SFA_BASE",
+		"RELOC_SFA_OFF13",
+		"RELOC_BASE10",
+		"RELOC_BASE13",
+		"RELOC_BASE22",
+		"RELOC_PC10",
+		"RELOC_PC22",
+		"RELOC_JMP_TBL",
+		"RELOC_SEGOFF16",
+		"RELOC_GLOB_DAT",
+		"RELOC_JMP_SLOT",
+		"RELOC_RELATIVE",
+		"NO_RELOC"
+	    };
+	
+	if (insn->error) {
+		fprintf(stderr, "ERROR: %s\n");
+	}
+	fprintf(stderr, "opcode=0x%08x\n", insn->opcode);
+	fprintf(stderr, "reloc = %s\n", Reloc[insn->reloc]);
+	fprintf(stderr, "exp = {
+\n");
+	fprintf(stderr, "\t\tX_add_symbol = %s\n",
+		((insn->exp.X_add_symbol != NULL)
+		 ? ((S_GET_NAME(insn->exp.X_add_symbol) != NULL)
+		    ? S_GET_NAME(insn->exp.X_add_symbol)
+		    : "???")
+		 : "0"));
+	fprintf(stderr, "\t\tX_sub_symbol = %s\n",
+		((insn->exp.X_subtract_symbol != NULL)
+		 ? (S_GET_NAME(insn->exp.X_subtract_symbol)
+		    ? S_GET_NAME(insn->exp.X_subtract_symbol)
+		    : "???")
+		 : "0"));
+	fprintf(stderr, "\t\tX_add_number = %d\n",
+		insn->exp.X_add_number);
+	fprintf(stderr, "}\n");
+	return;
+} /* print_insn() */
+#endif
+
+/* Set the hook... */
+
+void emit_sparc_reloc();
+void (*md_emit_relocations)() = emit_sparc_reloc;
+
+/*
+ * Sparc/AM29K relocations are completely different, so it needs
+ * this machine dependent routine to emit them.
+ */
+#if defined(OBJ_AOUT) || defined(OBJ_BOUT)
+void emit_sparc_reloc(fixP, segment_address_in_file)
+register fixS *fixP;
+relax_addressT segment_address_in_file;
+{
+	struct reloc_info_generic ri;
+	register symbolS *symbolP;
+	extern char *next_object_file_charP;
+	/*    long add_number; */
+	
+	bzero((char *) &ri, sizeof(ri));
+	for (; fixP; fixP = fixP->fx_next) {
+		
+		if (fixP->fx_r_type >= NO_RELOC) {
+			fprintf(stderr, "fixP->fx_r_type = %d\n", fixP->fx_r_type);
+			abort();
+		}
+		
+		if ((symbolP = fixP->fx_addsy) != NULL) {
+			ri.r_address = fixP->fx_frag->fr_address +
+			    fixP->fx_where - segment_address_in_file;
+			if ((S_GET_TYPE(symbolP)) == N_UNDF) {
+				ri.r_extern = 1;
+				ri.r_index = symbolP->sy_number;
+			} else {
+				ri.r_extern = 0;
+				ri.r_index = S_GET_TYPE(symbolP);
+			}
+			if (symbolP && symbolP->sy_frag) {
+				ri.r_addend = symbolP->sy_frag->fr_address;
+			}
+			ri.r_type = fixP->fx_r_type;
+			if (fixP->fx_pcrel) {
+				/*		ri.r_addend -= fixP->fx_where; */
+				ri.r_addend -= ri.r_address;
+			} else {
+				ri.r_addend = fixP->fx_addnumber;
+			}
+			
+			md_ri_to_chars(next_object_file_charP, &ri);
+			next_object_file_charP += md_reloc_size;
+		}
+	}
+	return;
+} /* emit_sparc_reloc() */
+#endif /* aout or bout */
+
+int md_parse_option(argP,cntP,vecP)
+char **argP;
+int *cntP;
+char ***vecP;
+{
+	return 1;
+} /* md_parse_option() */
+
+/* We have no need to default values of symbols. */
+
+/* ARGSUSED */
+symbolS *md_undefined_symbol(name)
+char *name;
+{
+	return 0;
+} /* md_undefined_symbol() */
+
+/* Parse an operand that is machine-specific.
+   We just return without modifying the expression if we have nothing
+   to do. */
+
+/* ARGSUSED */
+void md_operand(expressionP)
+expressionS *expressionP;
+{
+} /* md_operand() */
+
+/* Round up a section size to the appropriate boundary. */
+long md_section_align (segment, size)
+segT segment;
+long size;
+{
+	return (size + 7) & ~7;	/* Round all sects to multiple of 8 */
+} /* md_section_align() */
+
+/* Exactly what point is a PC-relative offset relative TO?
+   On the sparc, they're relative to the address of the offset, plus
+   its size.  This gets us to the following instruction.
+   (??? Is this right?  FIXME-SOON) */
+long md_pcrel_from(fixP)
+fixS *fixP;
+{
+	return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
+} /* md_pcrel_from() */
+
+/*
+ * Local Variables:
+ * comment-column: 0
+ * fill-column: 131
+ * End:
+ */
+
+/* end of tp-sparc.c */