gbdev/rgbds
1
0
Fork 0
mirror of https://github.com/gbdev/rgbds.git synced 2025-11-22 19:22:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

Implement ds align[alignment, offset] (#1181)

Browse Source
This commit is contained in:
Rangi
2023-11-21 17:57:47 -05:00
committed by GitHub
parent 6f0ffcf3e1
commit 46e29de66f
17 changed files with 148 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
src/asm/parser.y
View File

@@ -503,6 +503,7 @@ enum {
struct SectionSpec sectSpec;
struct MacroArgs *macroArg;
enum AssertionType assertType;
struct DsAlignment dsAlign;
struct DsArgList dsArgs;
struct PurgeArgList purgeArgs;
struct {
@@ -660,6 +661,7 @@ enum {
%type <sectMod> sectmod
%type <macroArg> macroargs
%type <dsAlign> ds_align
%type <dsArgs> ds_args
%type <purgeArgs> purge_args
@@ -1194,6 +1196,40 @@ ds : T_POP_DS uconst { sect_Skip($2, true); }
sect_RelBytes($2, $4.args, $4.nbArgs);
freeDsArgList(&$4);
}
| T_POP_DS ds_align trailing_comma {
uint32_t n = sect_GetAlignBytes($2.alignment, $2.alignOfs);
sect_Skip(n, true);
sect_AlignPC($2.alignment, $2.alignOfs);
}
| T_POP_DS ds_align T_COMMA ds_args trailing_comma {
uint32_t n = sect_GetAlignBytes($2.alignment, $2.alignOfs);
sect_RelBytes(n, $4.args, $4.nbArgs);
sect_AlignPC($2.alignment, $2.alignOfs);
freeDsArgList(&$4);
}
;
ds_align : T_OP_ALIGN T_LBRACK uconst T_RBRACK {
if ($3 > 16) {
error("Alignment must be between 0 and 16, not %u\n", $3);
} else {
$$.alignment = $3;
$$.alignOfs = 0;
}
}
| T_OP_ALIGN T_LBRACK uconst T_COMMA uconst T_RBRACK {
if ($3 > 16) {
error("Alignment must be between 0 and 16, not %u\n", $3);
} else if ($5 >= 1 << $3) {
error("Offset must be between 0 and %u, not %u\n",
(1 << $3) - 1, $5);
} else {
$$.alignment = $3;
$$.alignOfs = $5;
}
}
;
ds_args : reloc_8bit {