Created
June 29, 2013 12:21
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x86_64 registers
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| rax - accumulator | |
| rbx - base | |
| rcx - count | |
| rdx - data | |
| r8-15 | |
| rsi - source index | |
| rdi - destination index | |
| rbp - base pointer | |
| rsp - stack pointer | |
| rflags | |
| CF - carry flag | |
| PF - parity flag | |
| AF - auxiliary flag | |
| ZF - zero flag | |
| SF - sign flag | |
| DF - direction flag | |
| OF - overflow flag | |
| rip - instruction pointer | |
| -- | |
| for rax, rbx, rcx, rdx: | |
| r*x - 64 bits | |
| e*x - 32 bits (low) | |
| *x - 16 bits (low) | |
| *h - 8 bits (high) | |
| *l - 8 bits (low) | |
| for r8-r15: | |
| rN - 64 bits | |
| rNd - 32 bits (low) | |
| rNw - 16 bits (low) | |
| rNb - 8 bits (low) | |
| for rip, rflags | |
| only 64 bits | |
| for rsi, rdi, rsp, rbp | |
| sil - 8 bits | |
| dil - 8 bits | |
| spl - 8 bits | |
| bpl - 8 bits |
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See http://www.clarkcox.com/blog/2009/02/04/inspecting-obj-c-parameters-in-gdb/ and the official docs http://math-atlas.sourceforge.net/devel/assembly/abi_sysV_amd64.pdf for the ABI and calling conventions.