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Correct description of the jmpi instruction.

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* doc/body.texi: Correct "jmpi" description that incorrectly
	told it was possible to pass any address as jump target. The
	only way to do that is "movi+jmpr".
This commit is contained in:
pcpa 2013-01-30 18:11:43 -02:00
parent 7c7908c97e
commit 708cca9465
3 changed files with 24 additions and 11 deletions
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13
doc/body.texi
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@ -488,7 +488,8 @@ callr (not specified) @r{function call to a register}
calli (not specified) @r{function call to O1}
finishr (not specified) @r{function call to a register}
finishi (not specified) @r{function call to O1}
jmpi/jmpr (not specified) @r{unconditional jump to O1}
jmpr (not specified) @r{unconditional jump to register}
jmpi (not specified) @r{unconditional jump}
ret (not specified) @r{return from subroutine}
retr _c _uc _s _us _i _ui _l _f _d
reti _c _uc _s _us _i _ui _l _f _d
@ -1067,11 +1068,11 @@ a pointer to a C function. Note that conditional branches do not
receive a label argument, so they must be patched.
You need to call @code{patch_at} on the return of value @code{calli},
@code{finishi}, @code{jmpi} and @code{calli} if it is actually
referencing a label in the jit code. All other branch instructions
do not receive a label argument. Note that @code{movi} is an special
case, and patching it is usually done to get the final address of
a label, usually to later call @code{jmpr}.
@code{finishi}, and @code{calli} if it is actually referencing a label
in the jit code. All branch instructions do not receive a label
argument. Note that @code{movi} is an special case, and patching it
is usually done to get the final address of a label, usually to later
call @code{jmpr}.
Now, here is the iterative version: