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[Z80asm-devel] [bugs #10526] Support producing a table of relocations
From: |
H. Peter Anvin |
Subject: |
[Z80asm-devel] [bugs #10526] Support producing a table of relocations |
Date: |
Tue, 28 Sep 2004 16:46:25 -0400 |
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This mail is an automated notification from the bugs tracker
of the project: Z80 assembler.
/**************************************************************************/
[bugs #10526] Full Item Snapshot:
URL: <http://savannah.nongnu.org/bugs/?func=detailitem&item_id=10526>
Project: Z80 assembler
Submitted by: H. Peter Anvin
On: Tue 09/28/2004 at 20:39
Category: None
Severity: 5 - Average
Item Group: None
Resolution: None
Privacy: Public
Assigned to: None
Status: Open
Summary: Support producing a table of relocations
Original Submission: It would be nice to be able to produce a table of
relocations. It is basically a list containing (type, offset [,value]) for
which locations would have to be modified in order to move the code to a
different location.
In the case of Z80, there are only a few possible relocations:
R_Z80_8 -- absolute 8-bit relocation
R_Z80_16 -- absolute 16-bit relocation
R_Z80_PC8 -- relative 8-bit relocation
R_Z80_HI8 -- high half of an absolute 16-bit value
Out of these, R_Z80_PC8 would only be of interest to linkers, since for a
finished program they would already be resolved. R_Z80_HI8 is optional,
although perhaps useful for things like loading the I register. It is the only
relocation which would have to have an additional "value" field (since it's a
16-bit value, truncated, the source value wouldn't fit in the binary); all the
other relocations just need to be marked so the data in the binary can be
shifted appropriately.
For detailed info, follow this link:
<http://savannah.nongnu.org/bugs/?func=detailitem&item_id=10526>
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H. Peter Anvin <=