RE: Calling functions on x86

2005-09-20 Thread Dave Korn
Original Message >From: patriciak784-gccmainling >Sent: 20 September 2005 12:15 > On x86 and GCC 3.4.2, the resulting asm code when > leaving a stackframe is (in intel_syntax) > mov esp,ebp > pop ebp > .(results in 0x89EC5D or 0x8BE55D) > The AMD optimisation guide for AMD64 tells you not

Calling functions on x86

2005-09-20 Thread patriciak784-gccmainling
On x86 and GCC 3.4.2, the resulting asm code when leaving a stackframe is (in intel_syntax) mov esp,ebp pop ebp .(results in 0x89EC5D or 0x8BE55D) The AMD optimisation guide for AMD64 tells you not to use mov esp, ebp - pop ebp but to use "leave"(just 0xC9)! Perhaps using "enter x(16bit), imm8" is