INLINE ASSEMBLY LANGUAGE
VectorC allows inline assembly language in 2 formats:__asm instruction
or
__asm {
instructions
}
You can refer to variable and function names within the assembly code. Using assembly language in a function forces a stack frame with EBP to be used. To define an assembly language function without generating code to create and remove a stack frame, use __declspec (naked).
Operators supported in expressions
| + - * / | arithmetic |
| offset | the address of a variable |
| [] | the value at an address |
| dword | 32-bit |
| qword | 64-bit |
| word | 16-bit |
| byte | 8-bit |
| t-byte | 80-bit |
| xmmword | 128-bit |
| short | short branch offset |
| long | long branch offset |
| ptr |
Directives supported
| .286, .286p, .87, .386, .386p, .486, .486p | Ignored - no processor before pentium is supported by VectorC |
| .586, .586p | set target to Pentium |
| .mmx | allow MMX instructions |
| .686, .686p | set target to Pentium Pro |
| .pii | set target to Pentium II |
| .piii | set target to Pentium III |
| .p4 | set target to Pentium 4 (Willamette) - preliminary support only |
| .k6 | set target to K6 |
| .k62 | set target to K6-2 |
| .3dnow | allow 3DNow! instructions |
| .xmm | allow SSE instructions |
| .athlon | set target to Athlon |
| .align | align code/data |
Instructions supported
VectorC supports the full set of instructions of all the processors it compiles for.