gas/doc/c-ppc.texi

   1 @c Copyright (C) 2001-2021 Free Software Foundation, Inc.
   2 @c This is part of the GAS manual.
   3 @c For copying conditions, see the file as.texinfo.
   4 @c man end
   5 @ifset GENERIC
   6 @page
   7 @node PPC-Dependent
   8 @chapter PowerPC Dependent Features
   9 @end ifset
  10 @ifclear GENERIC
  11 @node Machine Dependencies
  12 @chapter PowerPC Dependent Features
  13 @end ifclear
  14
  15 @cindex PowerPC support
  16 @menu
  17 * PowerPC-Opts::                Options
  18 * PowerPC-Pseudo::              PowerPC Assembler Directives
  19 * PowerPC-Syntax::              PowerPC Syntax
  20 @end menu
  21
  22 @node PowerPC-Opts
  23 @section Options
  24
  25 @cindex options for PowerPC
  26 @cindex PowerPC options
  27 @cindex architectures, PowerPC
  28 @cindex PowerPC architectures
  29 The PowerPC chip family includes several successive levels, using the same
  30 core instruction set, but including a few additional instructions at
  31 each level.  There are exceptions to this however.  For details on what
  32 instructions each variant supports, please see the chip's architecture
  33 reference manual.
  34
  35 The following table lists all available PowerPC options.
  36
  37 @c man begin OPTIONS
  38 @table @gcctabopt
  39 @item -a32
  40 Generate ELF32 or XCOFF32.
  41
  42 @item -a64
  43 Generate ELF64 or XCOFF64.
  44
  45 @item -K PIC
  46 Set EF_PPC_RELOCATABLE_LIB in ELF flags.
  47
  48 @item -mpwrx | -mpwr2
  49 Generate code for POWER/2 (RIOS2).
  50
  51 @item -mpwr
  52 Generate code for POWER (RIOS1)
  53
  54 @item -m601
  55 Generate code for PowerPC 601.
  56
  57 @item -mppc, -mppc32, -m603, -m604
  58 Generate code for PowerPC 603/604.
  59
  60 @item -m403, -m405
  61 Generate code for PowerPC 403/405.
  62
  63 @item -m440
  64 Generate code for PowerPC 440.  BookE and some 405 instructions.
  65
  66 @item -m464
  67 Generate code for PowerPC 464.
  68
  69 @item -m476
  70 Generate code for PowerPC 476.
  71
  72 @item -m7400, -m7410, -m7450, -m7455
  73 Generate code for PowerPC 7400/7410/7450/7455.
  74
  75 @item -m750cl, -mgekko, -mbroadway
  76 Generate code for PowerPC 750CL/Gekko/Broadway.
  77
  78 @item -m821, -m850, -m860
  79 Generate code for PowerPC 821/850/860.
  80
  81 @item -mppc64, -m620
  82 Generate code for PowerPC 620/625/630.
  83
  84 @item -me500, -me500x2
  85 Generate code for Motorola e500 core complex.
  86
  87 @item -me500mc
  88 Generate code for Freescale e500mc core complex.
  89
  90 @item -me500mc64
  91 Generate code for Freescale e500mc64 core complex.
  92
  93 @item -me5500
  94 Generate code for Freescale e5500 core complex.
  95
  96 @item -me6500
  97 Generate code for Freescale e6500 core complex.
  98
  99 @item -mspe
 100 Generate code for Motorola SPE instructions.
 101
 102 @item -mspe2
 103 Generate code for Freescale SPE2 instructions.
 104
 105 @item -mtitan
 106 Generate code for AppliedMicro Titan core complex.
 107
 108 @item -mppc64bridge
 109 Generate code for PowerPC 64, including bridge insns.
 110
 111 @item -mbooke
 112 Generate code for 32-bit BookE.
 113
 114 @item -ma2
 115 Generate code for A2 architecture.
 116
 117 @item -me300
 118 Generate code for PowerPC e300 family.
 119
 120 @item -maltivec
 121 Generate code for processors with AltiVec instructions.
 122
 123 @item -mvle
 124 Generate code for Freescale PowerPC VLE instructions.
 125
 126 @item -mvsx
 127 Generate code for processors with Vector-Scalar (VSX) instructions.
 128
 129 @item -mhtm
 130 Generate code for processors with Hardware Transactional Memory instructions.
 131
 132 @item -mpower4, -mpwr4
 133 Generate code for Power4 architecture.
 134
 135 @item -mpower5, -mpwr5, -mpwr5x
 136 Generate code for Power5 architecture.
 137
 138 @item -mpower6, -mpwr6
 139 Generate code for Power6 architecture.
 140
 141 @item -mpower7, -mpwr7
 142 Generate code for Power7 architecture.
 143
 144 @item -mpower8, -mpwr8
 145 Generate code for Power8 architecture.
 146
 147 @item -mpower9, -mpwr9
 148 Generate code for Power9 architecture.
 149
 150 @item -mpower10, -mpwr10
 151 Generate code for Power10 architecture.
 152
 153 @item -mcell
 154 @item -mcell
 155 Generate code for Cell Broadband Engine architecture.
 156
 157 @item -mcom
 158 Generate code Power/PowerPC common instructions.
 159
 160 @item -many
 161 Generate code for any architecture (PWR/PWRX/PPC).
 162
 163 @item -mregnames
 164 Allow symbolic names for registers.
 165
 166 @item -mno-regnames
 167 Do not allow symbolic names for registers.
 168
 169 @item -mrelocatable
 170 Support for GCC's -mrelocatable option.
 171
 172 @item -mrelocatable-lib
 173 Support for GCC's -mrelocatable-lib option.
 174
 175 @item -memb
 176 Set PPC_EMB bit in ELF flags.
 177
 178 @item -mlittle, -mlittle-endian, -le
 179 Generate code for a little endian machine.
 180
 181 @item -mbig, -mbig-endian, -be
 182 Generate code for a big endian machine.
 183
 184 @item -msolaris
 185 Generate code for Solaris.
 186
 187 @item -mno-solaris
 188 Do not generate code for Solaris.
 189
 190 @item -nops=@var{count}
 191 If an alignment directive inserts more than @var{count} nops, put a
 192 branch at the beginning to skip execution of the nops.
 193 @end table
 194 @c man end
 195
 196
 197 @node PowerPC-Pseudo
 198 @section PowerPC Assembler Directives
 199
 200 @cindex directives for PowerPC
 201 @cindex PowerPC directives
 202 A number of assembler directives are available for PowerPC.  The
 203 following table is far from complete.
 204
 205 @table @code
 206 @item .machine "string"
 207 This directive allows you to change the machine for which code is
 208 generated.  @code{"string"} may be any of the -m cpu selection options
 209 (without the -m) enclosed in double quotes, @code{"push"}, or
 210 @code{"pop"}.  @code{.machine "push"} saves the currently selected
 211 cpu, which may be restored with @code{.machine "pop"}.
 212 @end table
 213
 214 @node PowerPC-Syntax
 215 @section PowerPC Syntax
 216 @menu
 217 * PowerPC-Chars::                Special Characters
 218 @end menu
 219
 220 @node PowerPC-Chars
 221 @subsection Special Characters
 222
 223 @cindex line comment character, PowerPC
 224 @cindex PowerPC line comment character
 225 The presence of a @samp{#} on a line indicates the start of a comment
 226 that extends to the end of the current line.
 227
 228 If a @samp{#} appears as the first character of a line then the whole
 229 line is treated as a comment, but in this case the line could also be
 230 a logical line number directive (@pxref{Comments}) or a preprocessor
 231 control command (@pxref{Preprocessing}).
 232
 233 If the assembler has been configured for the ppc-*-solaris* target
 234 then the @samp{!} character also acts as a line comment character.
 235 This can be disabled via the @option{-mno-solaris} command-line
 236 option.
 237
 238 @cindex line separator, PowerPC
 239 @cindex statement separator, PowerPC
 240 @cindex PowerPC line separator
 241 The @samp{;} character can be used to separate statements on the same
 242 line.