1 @c Copyright (C) 2009-2014 Free Software Foundation, Inc. 2 @c This is part of the GAS manual. 3 @c For copying conditions, see the file as.texinfo. 4 @ifset GENERIC 5 @page 6 @node SCORE-Dependent 7 @chapter SCORE Dependent Features 8 @end ifset 9 @ifclear GENERIC 10 @node Machine Dependencies 11 @chapter SCORE Dependent Features 12 @end ifclear 13 14 @cindex SCORE processor 15 @menu 16 * SCORE-Opts:: Assembler options 17 * SCORE-Pseudo:: SCORE Assembler Directives 18 * SCORE-Syntax:: Syntax 19 @end menu 20 21 @node SCORE-Opts 22 @section Options 23 24 @cindex options for SCORE 25 @cindex SCORE options 26 @cindex architectures, SCORE 27 @cindex SCORE architectures 28 29 The following table lists all available SCORE options. 30 31 @table @code 32 @item -G @var{num} 33 This option sets the largest size of an object that can be referenced 34 implicitly with the @code{gp} register. The default value is 8. 35 36 @item -EB 37 Assemble code for a big-endian cpu 38 39 @item -EL 40 Assemble code for a little-endian cpu 41 42 @item -FIXDD 43 Assemble code for fix data dependency 44 45 @item -NWARN 46 Assemble code for no warning message for fix data dependency 47 48 @item -SCORE5 49 Assemble code for target is SCORE5 50 51 @item -SCORE5U 52 Assemble code for target is SCORE5U 53 54 @item -SCORE7 55 Assemble code for target is SCORE7, this is default setting 56 57 @item -SCORE3 58 Assemble code for target is SCORE3 59 60 @item -march=score7 61 Assemble code for target is SCORE7, this is default setting 62 63 @item -march=score3 64 Assemble code for target is SCORE3 65 66 @item -USE_R1 67 Assemble code for no warning message when using temp register r1 68 69 @item -KPIC 70 Generate code for PIC. This option tells the assembler to generate 71 score position-independent macro expansions. It also tells the 72 assembler to mark the output file as PIC. 73 74 @item -O0 75 Assembler will not perform any optimizations 76 77 @item -V 78 Sunplus release version 79 80 @end table 81 82 @node SCORE-Pseudo 83 @section SCORE Assembler Directives 84 85 @cindex directives for SCORE 86 @cindex SCORE directives 87 A number of assembler directives are available for SCORE. The 88 following table is far from complete. 89 90 @table @code 91 @item .set nwarn 92 Let the assembler not to generate warnings if the source machine 93 language instructions happen data dependency. 94 95 @item .set fixdd 96 Let the assembler to insert bubbles (32 bit nop instruction / 97 16 bit nop! Instruction) if the source machine language instructions 98 happen data dependency. 99 100 @item .set nofixdd 101 Let the assembler to generate warnings if the source machine 102 language instructions happen data dependency. (Default) 103 104 @item .set r1 105 Let the assembler not to generate warnings if the source program 106 uses r1. allow user to use r1 107 108 @item set nor1 109 Let the assembler to generate warnings if the source program uses 110 r1. (Default) 111 112 @item .sdata 113 Tell the assembler to add subsequent data into the sdata section 114 115 @item .rdata 116 Tell the assembler to add subsequent data into the rdata section 117 118 @item .frame "frame-register", "offset", "return-pc-register" 119 Describe a stack frame. "frame-register" is the frame register, 120 "offset" is the distance from the frame register to the virtual 121 frame pointer, "return-pc-register" is the return program register. 122 You must use ".ent" before ".frame" and only one ".frame" can be 123 used per ".ent". 124 125 @item .mask "bitmask", "frameoffset" 126 Indicate which of the integer registers are saved in the current 127 function's stack frame, this is for the debugger to explain the 128 frame chain. 129 130 @item .ent "proc-name" 131 Set the beginning of the procedure "proc_name". Use this directive 132 when you want to generate information for the debugger. 133 134 @item .end proc-name 135 Set the end of a procedure. Use this directive to generate information 136 for the debugger. 137 138 @item .bss 139 Switch the destination of following statements into the bss section, 140 which is used for data that is uninitialized anywhere. 141 142 @end table 143 144 @node SCORE-Syntax 145 @section SCORE Syntax 146 @menu 147 * SCORE-Chars:: Special Characters 148 @end menu 149 150 @node SCORE-Chars 151 @subsection Special Characters 152 153 @cindex line comment character, SCORE 154 @cindex SCORE line comment character 155 The presence of a @samp{#} appearing anywhere on a line indicates the 156 start of a comment that extends to the end of that line. 157 158 If a @samp{#} appears as the first character of a line then the whole 159 line is treated as a comment, but in this case the line can also be a 160 logical line number directive (@pxref{Comments}) or a preprocessor 161 control command (@pxref{Preprocessing}). 162 163 @cindex line separator, SCORE 164 @cindex statement separator, SCORE 165 @cindex SCORE line separator 166 The @samp{;} character can be used to separate statements on the same 167 line. 168
