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| author | Jim Kingdon <jkingdon@engr.sgi.com> | 1993-09-23 02:25:28 +0000 |
|---|---|---|
| committer | Jim Kingdon <jkingdon@engr.sgi.com> | 1993-09-23 02:25:28 +0000 |
| commit | 8d8c5f398aa8017e799b2349cedd5665e71496ee (patch) | |
| tree | 0f1ac22b390ab871896f7c4b2514781f6bee3099 /gdb/doc | |
| parent | b083df087782efaa837af497bb143015cf9a50d2 (diff) | |
| download | gdb-8d8c5f398aa8017e799b2349cedd5665e71496ee.zip gdb-8d8c5f398aa8017e799b2349cedd5665e71496ee.tar.gz gdb-8d8c5f398aa8017e799b2349cedd5665e71496ee.tar.bz2 | |
* remote.texi (Bootstrapping): Discuss 386 call gates.
Diffstat (limited to 'gdb/doc')
| -rw-r--r-- | gdb/doc/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/doc/remote.texi | 8 |
2 files changed, 7 insertions, 5 deletions
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index 522eab8..0de4733 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,7 @@ +Wed Sep 22 21:22:11 1993 Jim Kingdon (kingdon@lioth.cygnus.com) + + * remote.texi (Bootstrapping): Discuss 386 call gates. + Sat Sep 18 17:10:44 1993 Jim Kingdon (kingdon@poseidon.cygnus.com) * stabs.texinfo (Based Variables): New node. diff --git a/gdb/doc/remote.texi b/gdb/doc/remote.texi index e5ddac7..bf04d0f 100644 --- a/gdb/doc/remote.texi +++ b/gdb/doc/remote.texi @@ -166,6 +166,7 @@ It may be identical to @code{putchar} for your target system; a different name is used to allow you to distinguish the two if you wish. @item void exceptionHandler (int @var{exception_number}, void *@var{exception_address}) +@kindex exceptionHandler Write this function to install @var{exception_address} in the exception handling tables. You need to do this because the stub does not have any way of knowing what the exception handling tables on your target system @@ -180,12 +181,9 @@ etc.) should be just as it is when a processor exception occurs. So if you want to use a jump instruction to reach @var{exception_address}, it should be a simple jump, not a jump to subroutine. -@c For the 386, doesn't the interrupt gate contain a privilege level? -@c If so, what should it be set to? I suspect the answer is the -@c privilege level in effect at the time that exceptionHandler is -@c called, but I'm not sure. FIXME. For the 386, @var{exception_address} should be installed as an interrupt -gate so that interrupts are masked while the handler runs. The +gate so that interrupts are masked while the handler runs. The gate +should be at privilege level 0 (the most privileged level). The @sc{sparc} and 68k stubs are able to mask interrupts themself without help from @code{exceptionHandler}. |