------- Comment #2 from jakub at gcc dot gnu dot org 2007-08-03 22:13 ------- You are looking at obsolete version of the psABI. Please see http://www.x86-64.org/viewvc/trunk/x86-64-ABI/low-level-sys-info.tex?revision=214&view=markup General Purpose Register RAX & 0 &\RAX\\ General Purpose Register RDX & 1 &\RDX\\ General Purpose Register RCX & 2 &\RCX\\ General Purpose Register RBX & 3 &\RBX\\ General Purpose Register RSI & 4 &\RSI\\ General Purpose Register RDI & 5 &\RDI\\ Frame Pointer Register RBP & 6 &\RBP\\ Stack Pointer Register RSP & 7 &\RSP\\ Extended Integer Registers 8-15 & 8-15 &\reg{r8}--\reg{r15}\\ Return Address RA & 16&\\ SSE Registers 0--7 & 17-24 & \reg{xmm0}--\reg{xmm7} \\ Extended SSE Registers 8--15 & 25-32 & \reg{xmm8}--\reg{xmm15} \\ Floating Point Registers 0--7 & 33-40 & \reg{st0}--\reg{st7} \\ MMX Registers 0--7 & 41-48 & \reg{mm0}--\reg{mm7} \\ Flag Register & 49 & \reg{rFLAGS} \\ Segment Register ES & 50 & \reg{es} \\ Segment Register CS & 51 & \reg{cs} \\ Segment Register SS & 52 & \reg{ss} \\ Segment Register DS & 53 & \reg{ds} \\ Segment Register FS & 54 & \reg{fs} \\ Segment Register GS & 55 & \reg{gs} \\ Reserved & 56-57 & \\ FS Base address & 58 & \reg{fs.base} \\ GS Base address & 59 & \reg{gs.base} \\ Reserved & 60-61 & \\ Task Register & 62 & \reg{tr} \\ LDT Register & 63 & \reg{ldtr} \\ 128-bit Media Control and Status & 64 & \reg{mxcsr} \\ x87 Control Word & 65 & \reg{fcw} \\ x87 Status Word & 66 & \reg{fsw} \\
http://www.x86-64.org/viewvc/trunk/x86-64-ABI/low-level-sys-info.tex?r1=164&r2=165&view=patch -- jakub at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |INVALID http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32982
