Implement multi-value charmaps (#1429)

test/asm/db-dw-dl-string.err

@@ -1,6 +1,6 @@
 warning: db-dw-dl-string.asm(15): [-Wnumeric-string]
-    Treating 4-character string as a number
+    Treating 4-byte string as a number
 warning: db-dw-dl-string.asm(16): [-Wnumeric-string]
-    Treating 4-character string as a number
+    Treating 4-byte string as a number
 warning: db-dw-dl-string.asm(17): [-Wnumeric-string]
-    Treating 4-character string as a number
+    Treating 4-byte string as a number

test/asm/multiple-charmaps.err

@@ -1,15 +1,15 @@
 warning: multiple-charmaps.asm(46) -> multiple-charmaps.asm::print_mapped(34): [-Wnumeric-string]
-    Treating 2-character string as a number
+    Treating 2-byte string as a number
 warning: multiple-charmaps.asm(54) -> multiple-charmaps.asm::print_mapped(34): [-Wnumeric-string]
-    Treating 2-character string as a number
+    Treating 2-byte string as a number
 warning: multiple-charmaps.asm(73) -> multiple-charmaps.asm::print_mapped(34): [-Wnumeric-string]
-    Treating 2-character string as a number
+    Treating 2-byte string as a number
 warning: multiple-charmaps.asm(95) -> multiple-charmaps.asm::print_mapped(34): [-Wnumeric-string]
-    Treating 2-character string as a number
+    Treating 2-byte string as a number
 warning: multiple-charmaps.asm(96) -> multiple-charmaps.asm::print_mapped(34): [-Wnumeric-string]
-    Treating 2-character string as a number
+    Treating 2-byte string as a number
 warning: multiple-charmaps.asm(104) -> multiple-charmaps.asm::print_mapped(34): [-Wnumeric-string]
-    Treating 2-character string as a number
+    Treating 2-byte string as a number
 error: multiple-charmaps.asm(106) -> multiple-charmaps.asm::new_(9):
     Charmap 'map1' already exists
 error: multiple-charmaps.asm(108) -> multiple-charmaps.asm::set_(15):

test/asm/multivalue-charmap.asm

@@ -0,0 +1,35 @@
+section "test", rom0[0]
+
+charmap "a", $61
+charmap "b", $62
+charmap "c", $63
+charmap "啊", $04, $c3
+charmap "de", $6564
+charmap "fghi", $66, $67, $6968
+
+db "abc啊" ; db $61, $62, $63, $04, $C3
+db "abcde" ; db $61, $62, $63, $64 (truncated)
+dw "abc啊" ; dw $61, $62, $63, $04, $C3
+dw "abcde" ; dw $61, $62, $63, $6564
+dw "abcdefghi" ; dw $61, $62, $63, $6564, $66, $67, $6968
+
+dl 0 ; separator
+
+charmap "A", $01234567
+charmap "B", $fedcba98
+assert "A" == $01234567
+assert "B" == $fedcba98
+db "AB" ; db $01234567, $fedcba98 (truncated to $67, $98)
+dl "AB" ; dl $01234567, $fedcba98
+
+charmap "C", $01, $23, $45, $67
+charmap "D", $fe, $dc, $ba, $98
+assert "C" == $01234567
+assert "D" == $fedcba98
+db "CD" ; db $01, $23, $45, $67, $fe, $dc, $ba, $98
+dw "CD" ; dw $01, $23, $45, $67, $fe, $dc, $ba, $98
+
+charmap "E", $01, $2345, $6789ab, $cdef
+assert "E" == $0145abef
+db "E" ; db $01, $2345, $6789ab, $cdef (truncated to $01, $45, $ab, $ef)
+dl "E" ; dl $01, $2345, $6789ab, $cdef

test/asm/multivalue-charmap.err

@@ -0,0 +1,14 @@
+warning: multivalue-charmap.asm(11): [-Wtruncation]
+    All character units must be 8-bit
+warning: multivalue-charmap.asm(22): [-Wtruncation]
+    All character units must be 8-bit
+warning: multivalue-charmap.asm(27): [-Wnumeric-string]
+    Treating 4-byte string as a number
+warning: multivalue-charmap.asm(28): [-Wnumeric-string]
+    Treating 4-byte string as a number
+warning: multivalue-charmap.asm(33): [-Wtruncation]
+    All character units must be 8-bit
+warning: multivalue-charmap.asm(33): [-Wnumeric-string]
+    Treating 4-byte string as a number
+warning: multivalue-charmap.asm(34): [-Wtruncation]
+    All character units must be 8-bit

test/asm/warn-numeric-string.err

@@ -1,38 +1,38 @@
 warning: warn-numeric-string.asm(20) -> warn-numeric-string.asm::try(12): [-Wnumeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 warning: warn-numeric-string.asm(20) -> warn-numeric-string.asm::try(13): [-Wnumeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 warning: warn-numeric-string.asm(20) -> warn-numeric-string.asm::try(13): [-Wnumeric-string]
-    Treating string as a number ignores first 2 characters
+    Treating string as a number ignores first 2 bytes
 warning: warn-numeric-string.asm(22) -> warn-numeric-string.asm::try(12): [-Wnumeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 warning: warn-numeric-string.asm(22) -> warn-numeric-string.asm::try(13): [-Wnumeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 warning: warn-numeric-string.asm(22) -> warn-numeric-string.asm::try(13): [-Wnumeric-string]
-    Treating string as a number ignores first 2 characters
+    Treating string as a number ignores first 2 bytes
 warning: warn-numeric-string.asm(23) -> warn-numeric-string.asm::try(12): [-Wnumeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 warning: warn-numeric-string.asm(23) -> warn-numeric-string.asm::try(13): [-Wnumeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 warning: warn-numeric-string.asm(23) -> warn-numeric-string.asm::try(13): [-Wnumeric-string]
-    Treating string as a number ignores first 2 characters
+    Treating string as a number ignores first 2 bytes
 warning: warn-numeric-string.asm(23) -> warn-numeric-string.asm::try(15): [-Wnumeric-string]
-    Treating 2-character string as a number
+    Treating 2-byte string as a number
 warning: warn-numeric-string.asm(23) -> warn-numeric-string.asm::try(16): [-Wnumeric-string]
-    Treating 3-character string as a number
+    Treating 3-byte string as a number
 error: warn-numeric-string.asm(24) -> warn-numeric-string.asm::try(12): [-Werror=numeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 error: warn-numeric-string.asm(24) -> warn-numeric-string.asm::try(13): [-Werror=numeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 error: warn-numeric-string.asm(24) -> warn-numeric-string.asm::try(13): [-Werror=numeric-string]
-    Treating string as a number ignores first 2 characters
+    Treating string as a number ignores first 2 bytes
 error: warn-numeric-string.asm(25) -> warn-numeric-string.asm::try(12): [-Werror=numeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 error: warn-numeric-string.asm(25) -> warn-numeric-string.asm::try(13): [-Werror=numeric-string]
-    Treating string as a number ignores first 1 character
+    Treating string as a number ignores first 1 byte
 error: warn-numeric-string.asm(25) -> warn-numeric-string.asm::try(13): [-Werror=numeric-string]
-    Treating string as a number ignores first 2 characters
+    Treating string as a number ignores first 2 bytes
 error: warn-numeric-string.asm(25) -> warn-numeric-string.asm::try(15): [-Werror=numeric-string]
-    Treating 2-character string as a number
+    Treating 2-byte string as a number
 error: warn-numeric-string.asm(25) -> warn-numeric-string.asm::try(16): [-Werror=numeric-string]
-    Treating 3-character string as a number
+    Treating 3-byte string as a number