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Commit Graph

6 Commits

Author SHA1 Message Date
Andy McFadden
5f472b60cf ORG rework, part 3
Split ".org" into ".arstart" and ".arend" (address range start/end).
Address range ends are now shown in the code list view, and the
pseudo-op can be edited in app settings.  Address range starts are
now shown after notes and long comments, rather than before, which
brings the on-screen display in sync with generated code.

Reworked the address range editor UI to include the new features.
The implementation is fully broken.

More changes to the AddressMap API, putting the resolved region length
into a separate ActualLength field.  Added FindRegion().  Renamed
some things.

Code generation changed slightly: the blank line before a region-end
line now comes after it, and ACME's "} ;!pseudopc" is now just "}".
This required minor updates to some of the regression test results.
2021-09-22 15:28:11 -07:00
Andy McFadden
8db554c1cd Fix 64tass output for non-loadable files
64tass wants to place its output into a 64KB region of memory,
starting at the address "*" is set to, and continuing without
wrapping around the end of the bank.  Some files aren't meant to be
handled that way, so we need to generate the output differently.

If the file's output fits nicely, it's considered "loadable", and
is generated in the usual way.  If it doesn't, it's treated as
"streamable", and the initial "* = addr" directive is omitted
(leaving "*" at zero), and we go straight to ".logical" directives.

65816 code with an initial address outside bank 0 is treated as
"streamable" whether or not the contents fit nicely in the designated
64K area.  This caused a minor change to a few of the 65816 tests.

A new test, 20240-large-overlay, exercises "streamable" by creating
a file with eight overlapping 8KB segments that load at $8000.
While the file as a whole fits in 64KB, it wouldn't if loaded at
the desired start address.

Also, updated the regression test harness to report assembler
failure independently of overall test failure.  This makes it easier
to confirm that (say) ACME v0.96.4 still works with the code we
generate, even though it doesn't match the expected output (which
was generated for v0.97).

(problem was raised in issue #98)
2021-08-01 17:21:20 -07:00
Andy McFadden
b7d771a3b2 Fix expected values for 20212-reloc-data
Somehow these weren't part of commit 689204.
2020-07-22 17:25:55 -07:00
Andy McFadden
cc6ebaffc5 Update relocation data handling
When we have relocation data available, the code currently skips the
process of matching an address with a label for a PEA instruction when
the instruction in question doesn't have reloc data.  This does a
great job of separating code that pushes parts of addresses from code
that pushes constants.

This change expands the behavior to exclude instructions with 16-bit
address operands that use the Data Bank Register, e.g. "LDA abs"
and "LDA abs,X".  This is particularly useful for code that accesses
structured data using the operand as the structure offset, e.g.
"LDX addr" / "LDA $0000,X"

The 20212-reloc-data test has been updated to check the behavior.
2020-07-10 17:41:38 -07:00
Andy McFadden
6ce2cc0b58 Fix label-trampling bug in reloc data handler
If code accesses the high/low parts of a 32-bit address value with
no label, it auto-generates labels for addr+2 and addr.  The reloc
handler was replacing the unformatted bytes with a single multi-byte
format, hiding the label at addr+2.

The easy fix is to have the reloc data handler skip the entry.  This
is less useful than other approaches, but much simpler.

Added a test to 20212-reloc-data.
2020-07-10 13:56:07 -07:00
Andy McFadden
4e70edc90c Add 20212-reloc-data test
This test exercises the relocation data feature.  The test file is
generated from a multi-segment OMF file that was hex-edited to have
specific attributes (see 20212-reloc-data-lnk.S for instructions).
The test also serves as a way to exercise the OMF converter.

Also, implement the Bank Relative flag.
2020-07-05 17:17:44 -07:00