Mixing of Intel 32-bit Assembler and Fortran

In this section:

• Introduction
• The execution environment
• The CODE/EDOC facility
• Mixing of Intel 32-bit Assembler and Fortran
• Labels
• Referencing Fortran variables
• Literals
• Halfword and byte forms of instructions
• Using the coprocessor
• Instruction prefixes
• Other assembler facilities
• Other machine-level facilities
• Error messages
• 64-bit assembler

Assembler programs should not alter registers EBX% (pointer to non-local dynamic data), EBP% (pointer to local dynamic data), or ESP% (stack pointer). Other general registers can be used freely.

The coprocessor will be empty and in rounding mode when control is passed to assembler, and it must be in the same state afterwards.