regs.dat

   1 #
   2 # List of registers and their classes; classes are defined in nasm.h
   3 #
   4 # The columns are:
   5 #
   6 # register name, assembler class, disassembler class(es), x86 register number
   7 #
   8 # If the register name ends in two numbers separated by a dash, then it is
   9 # repeated as many times as indicated, and the register number is
  10 # updated with it.
  11 #
  12
  13 # General-purpose registers
  14 al      REG_AL          reg8,reg8_rex   0
  15 ah      REG_HIGH        reg8            4
  16 ax      REG_AX          reg16           0
  17 eax     REG_EAX         reg32           0
  18 rax     REG_RAX         reg64           0
  19 bl      REG8            reg8,reg8_rex   3
  20 bh      REG_HIGH        reg8            7
  21 bx      REG16           reg16           3
  22 ebx     REG32           reg32           3
  23 rbx     REG64           reg64           3
  24 cl      REG_CL          reg8,reg8_rex   1
  25 ch      REG_HIGH        reg8            5
  26 cx      REG_CX          reg16           1
  27 ecx     REG_ECX         reg32           1
  28 rcx     REG_RCX         reg64           1
  29 dl      REG_DL          reg8,reg8_rex   2
  30 dh      REG_HIGH        reg8            6
  31 dx      REG_DX          reg16           2
  32 edx     REG_EDX         reg32           2
  33 rdx     REG_RDX         reg64           2
  34 spl     REG8            reg8_rex        4
  35 sp      REG16           reg16           4
  36 esp     REG32           reg32           4
  37 rsp     REG64           reg64           4
  38 bpl     REG8            reg8_rex        5
  39 bp      REG16           reg16           5
  40 ebp     REG32           reg32           5
  41 rbp     REG64           reg64           5
  42 sil     REG8            reg8_rex        6
  43 si      REG16           reg16           6
  44 esi     REG32           reg32           6
  45 rsi     REG64           reg64           6
  46 dil     REG8            reg8_rex        7
  47 di      REG16           reg16           7
  48 edi     REG32           reg32           7
  49 rdi     REG64           reg64           7
  50 r8-15b  REG8            reg8_rex        8
  51 r8-15w  REG16           reg16           8
  52 r8-15d  REG32           reg32           8
  53 r8-15   REG64           reg64           8
  54
  55 # Segment registers
  56 cs      REG_CS          sreg            1
  57 ds      REG_DESS        sreg            3
  58 es      REG_DESS        sreg            0
  59 ss      REG_DESS        sreg            2
  60 fs      REG_FSGS        sreg            4
  61 gs      REG_FSGS        sreg            5
  62 segr6-7 REG_SEG67       sreg            6
  63
  64 # Control registers
  65 cr0-15  REG_CREG        creg            0
  66
  67 # Debug registers
  68 dr0-15  REG_DREG        dreg            0
  69
  70 # Test registers
  71 tr0-7   REG_TREG        treg            0
  72
  73 # Floating-point registers
  74 st0     FPU0            fpureg          0
  75 st1-7   FPUREG          fpureg          1
  76
  77 # MMX registers
  78 mm0-7   MMXREG          mmxreg          0
  79
  80 # SSE registers
  81 xmm0    XMM0            xmmreg          0
  82 xmm1-15 XMMREG          xmmreg          1