* alpha.c, basic_blocks.c, basic_blocks.h, bb_exit_func.c,
[binutils.git] / gas / doc / c-h8500.texi
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1 @c Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
2 @c This is part of the GAS manual.
3 @c For copying conditions, see the file as.texinfo.
4 @page
5 @node H8/500-Dependent
6 @chapter H8/500 Dependent Features
8 @cindex H8/500 support
9 @menu
10 * H8/500 Options::              Options
11 * H8/500 Syntax::               Syntax
12 * H8/500 Floating Point::       Floating Point
13 * H8/500 Directives::           H8/500 Machine Directives
14 * H8/500 Opcodes::              Opcodes
15 @end menu
17 @node H8/500 Options
18 @section Options
20 @cindex H8/500 options (none)
21 @cindex options, H8/500 (none)
22 @code{@value{AS}} has no additional command-line options for the
23 Renesas (formerly Hitachi) H8/500 family.
25 @node H8/500 Syntax
26 @section Syntax
28 @menu
29 * H8/500-Chars::                Special Characters
30 * H8/500-Regs::                 Register Names
31 * H8/500-Addressing::           Addressing Modes
32 @end menu
34 @node H8/500-Chars
35 @subsection Special Characters
37 @cindex line comment character, H8/500
38 @cindex H8/500 line comment character
39 @samp{!} is the line comment character.
41 @cindex line separator, H8/500
42 @cindex statement separator, H8/500
43 @cindex H8/500 line separator
44 @samp{;} can be used instead of a newline to separate statements.
46 @cindex symbol names, @samp{$} in
47 @cindex @code{$} in symbol names
48 Since @samp{$} has no special meaning, you may use it in symbol names.
50 @node H8/500-Regs
51 @subsection Register Names
53 @cindex H8/500 registers
54 @cindex registers, H8/500
55 You can use the predefined symbols @samp{r0}, @samp{r1}, @samp{r2},
56 @samp{r3}, @samp{r4}, @samp{r5}, @samp{r6}, and @samp{r7} to refer to
57 the H8/500 registers.
59 The H8/500 also has these control registers:
61 @table @code
62 @item cp
63 code pointer
65 @item dp
66 data pointer
68 @item bp
69 base pointer
71 @item tp
72 stack top pointer
74 @item ep
75 extra pointer
77 @item sr
78 status register
80 @item ccr
81 condition code register
82 @end table
84 All registers are 16 bits long.  To represent 32 bit numbers, use two
85 adjacent registers; for distant memory addresses, use one of the segment
86 pointers (@code{cp} for the program counter; @code{dp} for
87 @code{r0}--@code{r3}; @code{ep} for @code{r4} and @code{r5}; and
88 @code{tp} for @code{r6} and @code{r7}.
90 @node H8/500-Addressing
91 @subsection Addressing Modes
93 @cindex addressing modes, H8/500
94 @cindex H8/500 addressing modes
95 @value{AS} understands the following addressing modes for the H8/500:
96 @table @code
97 @item R@var{n}
98 Register direct
100 @item @@R@var{n}
101 Register indirect
103 @item @@(d:8, R@var{n})
104 Register indirect with 8 bit signed displacement
106 @item @@(d:16, R@var{n})
107 Register indirect with 16 bit signed displacement
109 @item @@-R@var{n}
110 Register indirect with pre-decrement
112 @item @@R@var{n}+
113 Register indirect with post-increment
115 @item @@@var{aa}:8
116 8 bit absolute address
118 @item @@@var{aa}:16
119 16 bit absolute address
121 @item #@var{xx}:8
122 8 bit immediate
124 @item #@var{xx}:16
125 16 bit immediate
126 @end table
128 @node H8/500 Floating Point
129 @section Floating Point
131 @cindex floating point, H8/500 (@sc{ieee})
132 @cindex H8/500 floating point (@sc{ieee})
133 The H8/500 family has no hardware floating point, but the @code{.float}
134 directive generates @sc{ieee} floating-point numbers for compatibility
135 with other development tools.
137 @node H8/500 Directives
138 @section H8/500 Machine Directives
140 @cindex H8/500 machine directives (none)
141 @cindex machine directives, H8/500 (none)
142 @cindex @code{word} directive, H8/500
143 @cindex @code{int} directive, H8/500
144 @code{@value{AS}} has no machine-dependent directives for the H8/500.
145 However, on this platform the @samp{.int} and @samp{.word} directives
146 generate 16-bit numbers.
148 @node H8/500 Opcodes
149 @section Opcodes
151 @cindex H8/500 opcode summary
152 @cindex opcode summary, H8/500
153 @cindex mnemonics, H8/500
154 @cindex instruction summary, H8/500
155 For detailed information on the H8/500 machine instruction set, see
156 @cite{H8/500 Series Programming Manual} (Renesas M21T001).
158 @code{@value{AS}} implements all the standard H8/500 opcodes.  No additional
159 pseudo-instructions are needed on this family.
161 @ifset SMALL
162 @c this table, due to the multi-col faking and hardcoded order, looks silly
163 @c except in smallbook.  See comments below "@set SMALL" near top of this file.
165 The following table summarizes H8/500 opcodes and their operands:
167 @c Use @group if it ever works, instead of @page
168 @page
169 @smallexample
170 @i{Legend:}
171 abs8      @r{8-bit absolute address}
172 abs16     @r{16-bit absolute address}
173 abs24     @r{24-bit absolute address}
174 crb       @r{@code{ccr}, @code{br}, @code{ep}, @code{dp}, @code{tp}, @code{dp}}
175 disp8     @r{8-bit displacement}
176 ea        @r{@code{rn}, @code{@@rn}, @code{@@(d:8, rn)}, @code{@@(d:16, rn)},}
177           @r{@code{@@-rn}, @code{@@rn+}, @code{@@aa:8}, @code{@@aa:16},}
178           @r{@code{#xx:8}, @code{#xx:16}}
179 ea_mem    @r{@code{@@rn}, @code{@@(d:8, rn)}, @code{@@(d:16, rn)},}
180           @r{@code{@@-rn}, @code{@@rn+}, @code{@@aa:8}, @code{@@aa:16}}
181 ea_noimm  @r{@code{rn}, @code{@@rn}, @code{@@(d:8, rn)}, @code{@@(d:16, rn)},}
182           @r{@code{@@-rn}, @code{@@rn+}, @code{@@aa:8}, @code{@@aa:16}}
183 fp        r6
184 imm4      @r{4-bit immediate data}
185 imm8      @r{8-bit immediate data}
186 imm16     @r{16-bit immediate data}
187 pcrel8    @r{8-bit offset from program counter}
188 pcrel16   @r{16-bit offset from program counter}
189 qim       @r{@code{-2}, @code{-1}, @code{1}, @code{2}}
190 rd        @r{any register}
191 rs        @r{a register distinct from rd}
192 rlist     @r{comma-separated list of registers in parentheses;}
193           @r{register ranges @code{rd-rs} are allowed}
194 sp        @r{stack pointer (@code{r7})}
195 sr        @r{status register}
196 sz        @r{size; @samp{.b} or @samp{.w}.  If omitted, default @samp{.w}}
198 ldc[.b] ea,crb                 bcc[.w] pcrel16
199 ldc[.w] ea,sr                  bcc[.b] pcrel8 
200 add[:q] sz qim,ea_noimm        bhs[.w] pcrel16
201 add[:g] sz ea,rd               bhs[.b] pcrel8 
202 adds sz ea,rd                  bcs[.w] pcrel16
203 addx sz ea,rd                  bcs[.b] pcrel8 
204 and sz ea,rd                   blo[.w] pcrel16
205 andc[.b] imm8,crb              blo[.b] pcrel8 
206 andc[.w] imm16,sr              bne[.w] pcrel16
207 bpt                            bne[.b] pcrel8 
208 bra[.w] pcrel16                beq[.w] pcrel16
209 bra[.b] pcrel8                 beq[.b] pcrel8 
210 bt[.w] pcrel16                 bvc[.w] pcrel16
211 bt[.b] pcrel8                  bvc[.b] pcrel8 
212 brn[.w] pcrel16                bvs[.w] pcrel16
213 brn[.b] pcrel8                 bvs[.b] pcrel8 
214 bf[.w] pcrel16                 bpl[.w] pcrel16
215 bf[.b] pcrel8                  bpl[.b] pcrel8 
216 bhi[.w] pcrel16                bmi[.w] pcrel16
217 bhi[.b] pcrel8                 bmi[.b] pcrel8 
218 bls[.w] pcrel16                bge[.w] pcrel16
219 bls[.b] pcrel8                 bge[.b] pcrel8 
220 @page
221 blt[.w] pcrel16                mov[:g][.b] imm8,ea_mem       
222 blt[.b] pcrel8                 mov[:g][.w] imm16,ea_mem      
223 bgt[.w] pcrel16                movfpe[.b] ea,rd              
224 bgt[.b] pcrel8                 movtpe[.b] rs,ea_noimm        
225 ble[.w] pcrel16                mulxu sz ea,rd                
226 ble[.b] pcrel8                 neg sz ea                     
227 bclr sz imm4,ea_noimm          nop                           
228 bclr sz rs,ea_noimm            not sz ea                     
229 bnot sz imm4,ea_noimm          or sz ea,rd                   
230 bnot sz rs,ea_noimm            orc[.b] imm8,crb              
231 bset sz imm4,ea_noimm          orc[.w] imm16,sr              
232 bset sz rs,ea_noimm            pjmp abs24                    
233 bsr[.b] pcrel8                 pjmp @@rd                     
234 bsr[.w] pcrel16                pjsr abs24                    
235 btst sz imm4,ea_noimm          pjsr @@rd                     
236 btst sz rs,ea_noimm            prtd imm8                     
237 clr sz ea                      prtd imm16                    
238 cmp[:e][.b] imm8,rd            prts                          
239 cmp[:i][.w] imm16,rd           rotl sz ea                    
240 cmp[:g].b imm8,ea_noimm        rotr sz ea                    
241 cmp[:g][.w] imm16,ea_noimm     rotxl sz ea                   
242 Cmp[:g] sz ea,rd               rotxr sz ea                   
243 dadd rs,rd                     rtd imm8                     
244 divxu sz ea,rd                 rtd imm16                    
245 dsub rs,rd                     rts                          
246 exts[.b] rd                    scb/f rs,pcrel8               
247 extu[.b] rd                    scb/ne rs,pcrel8             
248 jmp @@rd                        scb/eq rs,pcrel8             
249 jmp @@(imm8,rd)                 shal sz ea                   
250 jmp @@(imm16,rd)                shar sz ea                    
251 jmp abs16                      shll sz ea            
252 jsr @@rd                        shlr sz ea            
253 jsr @@(imm8,rd)                 sleep                 
254 jsr @@(imm16,rd)                stc[.b] crb,ea_noimm  
255 jsr abs16                      stc[.w] sr,ea_noimm   
256 ldm @@sp+,(rlist)               stm (rlist),@@-sp     
257 link fp,imm8                   sub sz ea,rd          
258 link fp,imm16                  subs sz ea,rd         
259 mov[:e][.b] imm8,rd            subx sz ea,rd         
260 mov[:i][.w] imm16,rd           swap[.b] rd           
261 mov[:l][.w] abs8,rd            tas[.b] ea     
262 mov[:l].b abs8,rd              trapa imm4     
263 mov[:s][.w] rs,abs8            trap/vs        
264 mov[:s].b rs,abs8              tst sz ea      
265 mov[:f][.w] @@(disp8,fp),rd     unlk fp        
266 mov[:f][.w] rs,@@(disp8,fp)     xch[.w] rs,rd 
267 mov[:f].b @@(disp8,fp),rd       xor sz ea,rd   
268 mov[:f].b rs,@@(disp8,fp)       xorc.b imm8,crb
269 mov[:g] sz rs,ea_mem           xorc.w imm16,sr
270 mov[:g] sz ea,rd              
271 @end smallexample
272 @end ifset