1@c Copyright (C) 2001-2016 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 29The PowerPC chip family includes several successive levels, using the same 30core instruction set, but including a few additional instructions at 31each level. There are exceptions to this however. For details on what 32instructions each variant supports, please see the chip's architecture 33reference manual. 34 35The following table lists all available PowerPC options. 36 37@c man begin OPTIONS 38@table @gcctabopt 39@item -a32 40Generate ELF32 or XCOFF32. 41 42@item -a64 43Generate ELF64 or XCOFF64. 44 45@item -K PIC 46Set EF_PPC_RELOCATABLE_LIB in ELF flags. 47 48@item -mpwrx | -mpwr2 49Generate code for POWER/2 (RIOS2). 50 51@item -mpwr 52Generate code for POWER (RIOS1) 53 54@item -m601 55Generate code for PowerPC 601. 56 57@item -mppc, -mppc32, -m603, -m604 58Generate code for PowerPC 603/604. 59 60@item -m403, -m405 61Generate code for PowerPC 403/405. 62 63@item -m440 64Generate code for PowerPC 440. BookE and some 405 instructions. 65 66@item -m464 67Generate code for PowerPC 464. 68 69@item -m476 70Generate code for PowerPC 476. 71 72@item -m7400, -m7410, -m7450, -m7455 73Generate code for PowerPC 7400/7410/7450/7455. 74 75@item -m750cl 76Generate code for PowerPC 750CL. 77 78@item -m821, -m850, -m860 79Generate code for PowerPC 821/850/860. 80 81@item -mppc64, -m620 82Generate code for PowerPC 620/625/630. 83 84@item -me500, -me500x2 85Generate code for Motorola e500 core complex. 86 87@item -me500mc 88Generate code for Freescale e500mc core complex. 89 90@item -me500mc64 91Generate code for Freescale e500mc64 core complex. 92 93@item -me5500 94Generate code for Freescale e5500 core complex. 95 96@item -me6500 97Generate code for Freescale e6500 core complex. 98 99@item -mspe 100Generate code for Motorola SPE instructions. 101 102@item -mtitan 103Generate code for AppliedMicro Titan core complex. 104 105@item -mppc64bridge 106Generate code for PowerPC 64, including bridge insns. 107 108@item -mbooke 109Generate code for 32-bit BookE. 110 111@item -ma2 112Generate code for A2 architecture. 113 114@item -me300 115Generate code for PowerPC e300 family. 116 117@item -maltivec 118Generate code for processors with AltiVec instructions. 119 120@item -mvle 121Generate code for Freescale PowerPC VLE instructions. 122 123@item -mvsx 124Generate code for processors with Vector-Scalar (VSX) instructions. 125 126@item -mhtm 127Generate code for processors with Hardware Transactional Memory instructions. 128 129@item -mpower4, -mpwr4 130Generate code for Power4 architecture. 131 132@item -mpower5, -mpwr5, -mpwr5x 133Generate code for Power5 architecture. 134 135@item -mpower6, -mpwr6 136Generate code for Power6 architecture. 137 138@item -mpower7, -mpwr7 139Generate code for Power7 architecture. 140 141@item -mpower8, -mpwr8 142Generate code for Power8 architecture. 143 144@item -mpower9, -mpwr9 145Generate code for Power9 architecture. 146 147@item -mcell 148@item -mcell 149Generate code for Cell Broadband Engine architecture. 150 151@item -mcom 152Generate code Power/PowerPC common instructions. 153 154@item -many 155Generate code for any architecture (PWR/PWRX/PPC). 156 157@item -mregnames 158Allow symbolic names for registers. 159 160@item -mno-regnames 161Do not allow symbolic names for registers. 162 163@item -mrelocatable 164Support for GCC's -mrelocatable option. 165 166@item -mrelocatable-lib 167Support for GCC's -mrelocatable-lib option. 168 169@item -memb 170Set PPC_EMB bit in ELF flags. 171 172@item -mlittle, -mlittle-endian, -le 173Generate code for a little endian machine. 174 175@item -mbig, -mbig-endian, -be 176Generate code for a big endian machine. 177 178@item -msolaris 179Generate code for Solaris. 180 181@item -mno-solaris 182Do not generate code for Solaris. 183 184@item -nops=@var{count} 185If an alignment directive inserts more than @var{count} nops, put a 186branch at the beginning to skip execution of the nops. 187@end table 188@c man end 189 190 191@node PowerPC-Pseudo 192@section PowerPC Assembler Directives 193 194@cindex directives for PowerPC 195@cindex PowerPC directives 196A number of assembler directives are available for PowerPC. The 197following table is far from complete. 198 199@table @code 200@item .machine "string" 201This directive allows you to change the machine for which code is 202generated. @code{"string"} may be any of the -m cpu selection options 203(without the -m) enclosed in double quotes, @code{"push"}, or 204@code{"pop"}. @code{.machine "push"} saves the currently selected 205cpu, which may be restored with @code{.machine "pop"}. 206@end table 207 208@node PowerPC-Syntax 209@section PowerPC Syntax 210@menu 211* PowerPC-Chars:: Special Characters 212@end menu 213 214@node PowerPC-Chars 215@subsection Special Characters 216 217@cindex line comment character, PowerPC 218@cindex PowerPC line comment character 219The presence of a @samp{#} on a line indicates the start of a comment 220that extends to the end of the current line. 221 222If a @samp{#} appears as the first character of a line then the whole 223line is treated as a comment, but in this case the line could also be 224a logical line number directive (@pxref{Comments}) or a preprocessor 225control command (@pxref{Preprocessing}). 226 227If the assembler has been configured for the ppc-*-solaris* target 228then the @samp{!} character also acts as a line comment character. 229This can be disabled via the @option{-mno-solaris} command line 230option. 231 232@cindex line separator, PowerPC 233@cindex statement separator, PowerPC 234@cindex PowerPC line separator 235The @samp{;} character can be used to separate statements on the same 236line. 237