* src/vm/jit/i386/asmpart.S (asm_replacement_out): Added pv.

* src/vm/jit/i386/asmpart.S (asm_replacement_out): Added pv.
* src/vm/jit/x86_64/asmpart.S (asm_replacement_out): Added pv.

* src/vm/jit/replace.c (replace_read_executionstate)
(replace_write_executionstate): Prepared for alpha. Some cleanup.

* src/vm/jit/replace.c (replace_write_executionstate):
Calculate stack pointer from given stack base.
(replace_executionstate_println): Added pv.
(replace_sourcestate_println): Added stackbase.

* src/vm/jit/replace.h (executionstate): Added pv.
(sourcestate): Added stackbase.

* src/vm/jit/tools/genoffsets.c (main): Added offes_pv.

* doc/stack_frames.txt: Clarifications.