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Allow to request BANK() of sections and PC

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The bank of a section can be requested with `BANK("Section Name")`, and
the bank of the current section with `BANK(@)`. In both cases, the bank
number is resolved by the linker.

New commands have been added to the list of RPN commands of object
files, and the rest has been moved so that new additions don't force a
new change in the number of the enumerations.

Increase object file version, as it is now incompatible with the old
format.

Update manpages to reflect the new ways of using `BANK()` and the new
format of the object files.

Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
This commit is contained in:
Antonio Niño Díaz
2018-01-07 02:05:05 +00:00
parent d24cf11ad4
commit 959bfe2a9d
11 changed files with 216 additions and 92 deletions
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16
src/asm/rgbasm.5
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@@ -1,4 +1,4 @@
.\" Copyright (c) 2017 Antonio Nino Diaz <antonio_nd@outlook.com>
.\" Copyright (c) 2017-2018 Antonio Nino Diaz <antonio_nd@outlook.com>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
@@ -12,7 +12,7 @@
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd July 22, 2017
.Dd January 7, 2018
.Dt RGBASM 5
.Os RGBDS Manual
.Sh NAME
@@ -969,9 +969,15 @@ There are a few other functions that do various useful things:
.Pp
.Bl -column ".Sy String" ".Sy String"
.It Sy Name Ta Ta Ta Sy Operation
.It Li BANK(label) Ta Returns the bank number label is in.
The linker will have to resolve this so it can't be used when the expression has
to be constant.
.It Li BANK(\@/str/lbl) Ta Returns a bank number.
If the argument is the symbol
.Ic \@,
this function returns the bank of the current section.
If the argument is a string, it returns the bank of the section that has that
name.
If the argument is a label, it returns the bank number the label is in.
For labels, as the linker has to resolve this, it can't be used when the
expression has to be constant.
.It Li DEF(label) Ta Returns TRUE if label has been defined.
.It Li HIGH(r16/cnst/lbl) Ta Returns the top 8 bits of the operand if it is a
label or constant, or the top 8-bit register if it is a 16-bit register.