[Z80asm-devel] [bugs #10526] Support producing a table of relocations

[H. Peter Anvin]

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 of the project: Z80 assembler.




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[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.












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<http://savannah.nongnu.org/bugs/?func=detailitem&item_id=10526>

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