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Release 0.94.12: Finally created new "!for" syntax so counting can start at zero. Added "0b" as alternative prefix for binary values.
git-svn-id: https://svn.code.sf.net/p/acme-crossass/code-0/trunk@33 4df02467-bbd4-4a76-a152-e7ce94205b78
This commit is contained in:
marcobaye
parent
8b2c8187a2
commit
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@ -115,12 +115,12 @@ conversion table file, try using ACME:
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!to "asc2pet.ct", plain ; no load address
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* = 0 ; pc = table index
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; first create "as-is" table
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!for i, 256 {!byte i - 1}
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!for i, 0, 255 {!byte i}
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; now exchange upper and lower case characters
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* = 65
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!for i, 91 - 65 {!byte * + 128}
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* = 97
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!for i, 123 - 97 {!byte * - 32}
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* = 65, overlay
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!for i, 1, 26 {!byte * + 128}
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* = 97, overlay
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!for i, 1, 26 {!byte * - 32}
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The resulting file can be used as a conversion table to convert to
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PetSCII (which is useless, because ACME can do so anyway. But you get
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the idea).
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@ -358,42 +358,68 @@ Examples: ; this was taken from <6502/std.a>:
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}
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Call: !for LABEL, TIMES { BLOCK }
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Call: !for LABEL, START, END { BLOCK }
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Purpose: Looping assembly. The block of statements will be
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parsed TIMES times. For a more flexible possibility,
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have a look at "!do" below.
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Parameters: LABEL: Any valid label name. The label's value will
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show the number of the current loop cycle:
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In the first cycle it will have the value 1, in the
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last cycle it will have the value TIMES.
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TIMES: Any formula the value parser accepts, but it
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must be solvable even in the first pass. Negative
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values are forbidden, zero causes the block to be
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skipped.
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parsed a fixed number of times, as specified by the
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values of START and END. For a more flexible
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possibility, have a look at "!do" below.
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Parameters: LABEL: Any valid label name.
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START: Any formula the value parser accepts, but it
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must be solvable even in the first pass. LABEL will
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have this value during the first loop cycle.
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END: Any formula the value parser accepts, but it must
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be solvable even in the first pass. LABEL will have
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this value during the last loop cycle.
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BLOCK: A block of assembler statements.
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If START or END are floats, they will be converted to
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integers (never use floats for loop counters). If
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START is less than or equal to END, LABEL will get
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incremented at the end of each cycle; if START is
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greater than END, LABEL will get decremented at the
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end of each cycle. So after leaving the loop, LABEL
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will have an "illegal" value (END + 1 if counting up,
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END - 1 if counting down).
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Please note that it is impossible to change the number
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of loop cycles "inside" the loop by fiddling with the
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counter (using the "!set" pseudo opcode): The "!for"
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counter using the "!set" pseudo opcode: The "!for"
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routine keeps its own copy of the counter value and
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only sets the label value, it never reads it back.
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This was done to eliminate a possibility to hang ACME.
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Examples: ; conversion table: integer to BCD
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int2BCD !for Outer, 10 {
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!for Inner, 10 {
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!byte ((Outer - 1) << 4) OR (Inner - 1)
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Examples:
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int2BCD ; conversion table: integer to BCD
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!for Outer, 0, 9 {
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!for Inner, 0, 9 {
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!byte (Outer << 4) OR Inner
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}
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}
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!fill 156, $ff ; values above 99 give 255 (invalid)
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; conversion table: BCD to integer
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BCD2int !for Outer, 10 {
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!for Inner, 10 {
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!byte 10 * (Outer - 1) + (Inner - 1)
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BCD2int ; conversion table: BCD to integer
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!for Outer, 0, 9 {
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!for Inner, 0, 9 {
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!byte 10 * Outer + Inner
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}
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!fill 6, $ff ; invalid BCD values give 255
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}
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!fill 96, $ff ; invalid BCD values give 255
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quickclear ; generate speedcode to clear C64 screen
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lda #' '
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!for i, 0, 999 {
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sta $0400 + i
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}
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Miscellaneous: The old syntax ("!for LABEL, END { BLOCK }" where
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START was always implied to be 1) is still fully
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supported, but gives a warning to get people to change
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to the new syntax. When migrating your sources, bear
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in mind that it is no longer possible to skip the
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block completely by specifying a loop count of zero.
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Also note that with the new algorithm, LABEL has a
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different value after the block than during the last
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loop cycle, while the old algorithm kept that last
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value.
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Call: !set LABEL = VALUE
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Purpose: Assign given value to label even if the label already
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@ -12,6 +12,16 @@ platform used. There should be another help file in this archive
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outlining the platform specific changes.
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----------------------------------------------------------------------
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Section: New in release 0.94.12
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----------------------------------------------------------------------
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Finally created new "!for" syntax so counting can start at zero. The
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old syntax still works, but gives a warning. See AllPOs.txt for
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more info.
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Added "0b" as alternative prefix for binary values.
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----------------------------------------------------------------------
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Section: New in release 0.94.11
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----------------------------------------------------------------------
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@ -52,9 +52,13 @@ Bug in ACME, code follows
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A situation has been encountered implying there is a bug in ACME.
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See the last section in this file.
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C-style "==" comparison detected
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C-style "==" comparison detected.
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To check for equality, use a single '=' character instead.
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Found deprecated "!for" syntax.
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Please update your sources to use the new "!for" syntax. See
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AllPOs.txt for details.
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Implicit label definition not in leftmost column.
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An implicit label definition has blanks before the label name.
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Imagine this source code:
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@ -294,7 +298,8 @@ Found end-of-file instead of '}'.
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(because there was at least one block left open).
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Loop count is negative.
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You used the "!for" command with a negative loop count.
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You used the "!for" command with a negative loop count (getting
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this error is only possible when using the now deprecated syntax).
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Macro already defined.
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Macros can only be defined once. If you define a macro twice, ACME
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@ -318,15 +318,16 @@ Examples Notes
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---------------------------------------------------------------------
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128 a decimal value, integer
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128.5 a decimal value, floating point
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$d011 hexadecimal values are indicated by either
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0xffd2 leading "$" or leading "0x"
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$d011 hexadecimal values are indicated by either a
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0xffd2 leading "$" or a leading "0x".
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&1701 an octal value, indicated by "&"
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%010010 binary values are indicated by "%". In binary values,
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%....#... you can substitute the characters "0" and "1" by
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"." and "#" respectively. This way the values are
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much more readable, especially when building
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bitmapped objects (like C64 sprites or fonts) in
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your source code.
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%010010 binary values are indicated by either a leading "%"
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%....#... or a leading "0b". In binary values, you can
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0b01100110 substitute the characters "0" and "1" by "." and
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"#" respectively. This way the values are much
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more readable, especially when building bitmapped
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objects (like C64 sprites or fonts) in your source
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code.
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"p" character values are indicated by double or single
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'q' quotes. The actual numeric value depends on the
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current conversion table (none/petscii/screen),
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@ -1,4 +1,4 @@
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;ACME 0.93
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;ACME 0.94.12
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!to "trigono.o", plain
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* = $c000
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@ -7,10 +7,9 @@
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!raw "cos[0,pi/2] scaled to 0-255 range"
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!align $f, 0, 0 ; make output file look better in hex editor :)
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!for x, 256 {
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!byte cos(float(x - 1) / 255 * PI/2) * 255 + 0.5
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!for x, 0, 255 {
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!byte cos(float(x) / 255 * PI/2) * 255 + 0.5
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}
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; "x-1" converts interval [1,256] to interval [0,255]
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; "float()" makes sure this calculation is done in float mode now
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; "/255*half_PI" converts interval [0,255] to interval [0,PI/2]
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; "cos()" returns cosine. Wow.
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@ -21,8 +20,8 @@
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!raw "sin[-pi/2,pi/2] scaled to full range of 16b.16b fixed point"
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!align $f, 0, 0
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!for x, 1024 {
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!32 sin(float(x - 513) / 1024 * PI) * 65536 + 0.5
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!for x, 0, 1023 {
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!32 sin(float(x - 512) / 1024 * PI) * 65536 + 0.5
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}
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;undefined = 0.0 / 0.0 ; throws error when active
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@ -15,9 +15,9 @@
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#define RELEASE "0.94.11" // update before release (FIXME)
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#define RELEASE "0.94.12" // update before release (FIXME)
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#define CODENAME "Zarquon" // update before release
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#define CHANGE_DATE "28 May" // update before release
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#define CHANGE_DATE "31 May" // update before release
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#define CHANGE_YEAR "2014" // update before release
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//#define HOME_PAGE "http://home.pages.de/~mac_bacon/smorbrod/acme/" // FIXME
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#define HOME_PAGE "http://sourceforge.net/p/acme-crossass/" // FIXME
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93
src/alu.c
93
src/alu.c
@ -10,6 +10,7 @@
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// so a^b^c now means a^(b^c).
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// 7 May 2014 C-style "==" operators are now recognized (but
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// give a warning).
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// 31 May 2014 Added "0b" binary number prefix as alternative to "%".
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#include <stdlib.h>
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#include <math.h> // only for fp support
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#include "platform.h"
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@ -357,6 +358,46 @@ static void parse_quoted_character(char closing_quote)
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}
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// Parse binary value. Apart from '0' and '1', it also accepts the characters
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// '.' and '#', this is much more readable. The current value is stored as soon
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// as a character is read that is none of those given above.
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static void parse_binary_value(void) // Now GotByte = "%" or "b"
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{
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intval_t value = 0;
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int go_on = TRUE, // continue loop flag
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flags = MVALUE_GIVEN,
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digits = -1; // digit counter
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do {
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digits++;
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switch (GetByte()) {
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case '0':
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case '.':
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value <<= 1;
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break;
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case '1':
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case '#':
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value = (value << 1) | 1;
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break;
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default:
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go_on = 0;
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}
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} while (go_on);
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// set force bits
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if (digits > 8) {
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if (digits > 16) {
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if (value < 65536)
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flags |= MVALUE_FORCE24;
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} else {
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if (value < 256)
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flags |= MVALUE_FORCE16;
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}
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}
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PUSH_INTOPERAND(value, flags);
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// Now GotByte = non-binary char
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}
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// Parse hexadecimal value. It accepts "0" to "9", "a" to "f" and "A" to "F".
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// Capital letters will be converted to lowercase letters using the flagtable.
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// The current value is stored as soon as a character is read that is none of
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@ -434,11 +475,17 @@ static void parse_decimal_value(void) // Now GotByte = first digit
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intval_t intval = (GotByte & 15); // this works. it's ASCII.
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GetByte();
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// TODO - add "0b" prefix for binary values?
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if ((intval == 0) && (GotByte == 'x')) {
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// check for "0b" (binary) and "0x" (hexadecimal) prefixes
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if (intval == 0) {
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if (GotByte == 'b') {
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parse_binary_value();
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return;
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}
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if (GotByte == 'x') {
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parse_hexadecimal_value();
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return;
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}
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}
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// parse digits until no more
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while ((GotByte >= '0') && (GotByte <= '9')) {
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intval = 10 * intval + (GotByte & 15); // ASCII, see above
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@ -496,46 +543,6 @@ static void parse_program_counter(void) // Now GotByte = "*"
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}
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// Parse binary value. Apart from '0' and '1', it also accepts the characters
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// '.' and '#', this is much more readable. The current value is stored as soon
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// as a character is read that is none of those given above.
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static void parse_binary_value(void) // Now GotByte = "%"
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{
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intval_t value = 0;
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int go_on = TRUE, // continue loop flag
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flags = MVALUE_GIVEN,
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digits = -1; // digit counter
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do {
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digits++;
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switch (GetByte()) {
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case '0':
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case '.':
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value <<= 1;
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break;
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case '1':
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case '#':
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value = (value << 1) | 1;
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break;
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default:
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go_on = 0;
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}
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} while (go_on);
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// set force bits
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if (digits > 8) {
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if (digits > 16) {
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if (value < 65536)
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flags |= MVALUE_FORCE24;
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} else {
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if (value < 256)
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flags |= MVALUE_FORCE16;
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}
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}
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PUSH_INTOPERAND(value, flags);
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// Now GotByte = non-binary char
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}
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// Parse function call (sin(), cos(), arctan(), ...)
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static void parse_function_call(void)
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{
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@ -768,7 +775,7 @@ static void expect_dyadic_operator(void)
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operator = &ops_equals;
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// if it's "==", accept but warn
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if (GetByte() == '=') {
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Throw_first_pass_warning("C-style \"==\" comparison detected");
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Throw_first_pass_warning("C-style \"==\" comparison detected.");
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goto get_byte_and_push_dyadic;
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}
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goto push_dyadic;
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@ -44,7 +44,7 @@ struct result_int_t {
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// Boolean values
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#ifndef FALSE
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#define FALSE 0
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#define TRUE 1
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#define TRUE (!FALSE)
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#endif
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43
src/flow.c
43
src/flow.c
@ -179,12 +179,18 @@ static enum eos PO_do(void) // Now GotByte = illegal char
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// looping assembly ("!for"). Has to be re-entrant.
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// old syntax: !for VAR, END { BLOCK } VAR counts from 1 to END
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// new syntax: !for VAR, START, END { BLOCK } VAR counts from START to END
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static enum eos PO_for(void) // Now GotByte = illegal char
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{
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struct input loop_input,
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*outer_input;
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struct result_t loop_counter;
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intval_t maximum;
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intval_t first_arg,
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counter_first,
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counter_last,
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counter_increment;
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int old_algo; // actually bool
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char *loop_body; // pointer to loop's body block
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struct label *label;
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zone_t zone;
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@ -196,13 +202,25 @@ static enum eos PO_for(void) // Now GotByte = illegal char
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// Now GotByte = illegal char
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force_bit = Input_get_force_bit(); // skips spaces after
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label = Label_find(zone, force_bit);
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if (Input_accept_comma() == 0) {
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if (!Input_accept_comma()) {
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Throw_error(exception_syntax);
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return SKIP_REMAINDER;
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}
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maximum = ALU_defined_int();
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if (maximum < 0)
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first_arg = ALU_defined_int();
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if (Input_accept_comma()) {
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old_algo = FALSE; // new format - yay!
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counter_first = first_arg; // use given argument
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counter_last = ALU_defined_int(); // read second argument
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counter_increment = (counter_last < counter_first) ? -1 : 1;
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} else {
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old_algo = TRUE; // old format - booo!
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Throw_first_pass_warning("Found deprecated \"!for\" syntax.");
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if (first_arg < 0)
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Throw_serious_error("Loop count is negative.");
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counter_first = 0; // CAUTION - old algo pre-increments and therefore starts with 1!
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counter_last = first_arg; // use given argument
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counter_increment = 1;
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}
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if (GotByte != CHAR_SOB)
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Throw_serious_error(exception_no_left_brace);
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// remember line number of loop pseudo opcode
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@ -220,16 +238,25 @@ static enum eos PO_for(void) // Now GotByte = illegal char
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Input_now = &loop_input;
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// init counter
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loop_counter.flags = MVALUE_DEFINED | MVALUE_EXISTS;
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loop_counter.val.intval = 0;
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loop_counter.val.intval = counter_first;
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Label_set_value(label, &loop_counter, TRUE);
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if (old_algo) {
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// old algo for old syntax:
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// if count == 0, skip loop
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if (maximum) {
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if (counter_last) {
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do {
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loop_counter.val.intval++; // increment counter
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loop_counter.val.intval += counter_increment;
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Label_set_value(label, &loop_counter, TRUE);
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parse_ram_block(loop_start, loop_body);
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} while (loop_counter.val.intval < maximum);
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} while (loop_counter.val.intval < counter_last);
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}
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} else {
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// new algo for new syntax:
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do {
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parse_ram_block(loop_start, loop_body);
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loop_counter.val.intval += counter_increment;
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Label_set_value(label, &loop_counter, TRUE);
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} while (loop_counter.val.intval != (counter_last + counter_increment));
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}
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// Free memory
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free(loop_body);
|
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|
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