SGI Architecture, ABI, Languages

• Instruction Set Architecture (ISA):
  • -mips4 (R1x000, R8000, R5000 processors)
  • -mips3 (R4400)
  • -mips[1|2] (R3000, R4000 processors, invokes old ucode compiler)
• ABI (Application Binary Interface):
  • -n32 (32 bit pointers, 4 byte integers, 4 byte real)
  • -64 (64 bit pointers, 4 byte integers, 4 byte real)
• Languages:
  • C
  • C++
  • Fortran 77
  • Fortran 90

Variable C size[bit] F size[bit]

-n32 -64 -n32 -64

char/character 8 8 8 8

short 16 16

int/integer 32 32 32 32

long 32 64

long long 64 64

logical 32 32

float/real 32 32 32 32

double 64 64 64 64

pointer 32 64

Previous slide

Next slide

Back to first slide

View graphic version