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Undeprecate ld [$ff00+c] (#1619)

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This commit is contained in:
Rangi
2025-01-20 14:05:15 -05:00
committed by GitHub
parent 147a5c9bf3
commit 2426068409
7 changed files with 35 additions and 22 deletions
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21
src/asm/parser.y
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@@ -1973,14 +1973,21 @@ z80_ldh:
| Z80_LDH MODE_A COMMA c_ind {
sect_ConstByte(0xF2);
}
| Z80_LDH MODE_A COMMA ff00_c_ind {
sect_ConstByte(0xF2);
}
| Z80_LDH c_ind COMMA MODE_A {
sect_ConstByte(0xE2);
}
| Z80_LDH ff00_c_ind COMMA MODE_A {
sect_ConstByte(0xE2);
}
;
c_ind:
LBRACK MODE_C RBRACK
| LBRACK relocexpr OP_ADD MODE_C RBRACK {
c_ind: LBRACK MODE_C RBRACK;
ff00_c_ind:
LBRACK relocexpr OP_ADD MODE_C RBRACK {
// This has to use `relocexpr`, not `iconst`, to avoid a shift/reduce conflict
if ($2.getConstVal() != 0xFF00)
::error("Base value must be equal to $FF00 for $FF00+C\n");
@@ -2031,7 +2038,10 @@ z80_ld_mem:
;
z80_ld_c_ind:
Z80_LD c_ind COMMA MODE_A {
Z80_LD ff00_c_ind COMMA MODE_A {
sect_ConstByte(0xE2);
}
| Z80_LD c_ind COMMA MODE_A {
warning(WARNING_OBSOLETE, "LD [C], A is deprecated; use LDH [C], A\n");
sect_ConstByte(0xE2);
}
@@ -2064,6 +2074,9 @@ z80_ld_a:
| Z80_LD reg_a COMMA reg_r {
sect_ConstByte(0x40 | ($2 << 3) | $4);
}
| Z80_LD reg_a COMMA ff00_c_ind {
sect_ConstByte(0xF2);
}
| Z80_LD reg_a COMMA c_ind {
warning(WARNING_OBSOLETE, "LD A, [C] is deprecated; use LDH A, [C]\n");
sect_ConstByte(0xF2);