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String buffer refactoring, part 2.

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Switch to pointers for start/pos/end of buffer.
Abstract out some buffer writers.
This commit is contained in:
Mike Pall
2013-02-27 21:17:27 +01:00
parent 28cfcf7744
commit 116cdd7e9a
18 changed files with 334 additions and 336 deletions
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26
src/vm_mips.dasc
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@@ -1736,14 +1736,15 @@ static void build_subroutines(BuildCtx *ctx)
| beqz AT, ->fff_fallback
|. lw TMP0, STR:CARG1->len
| mfc1 CARG3, f0
| lw TMP1, DISPATCH_GL(tmpbuf.sz)(DISPATCH)
| lw CARG2, DISPATCH_GL(tmpbuf.b)(DISPATCH)
| lw TMP1, DISPATCH_GL(tmpbuf.e)(DISPATCH)
| li AT, 1
| blez CARG3, ->fff_emptystr // Count <= 0?
|. sltu AT, AT, TMP0
| beqz TMP0, ->fff_emptystr // Zero length string?
|. sltu TMP0, TMP1, CARG3
|. addu TMP3, CARG2, CARG3
| sltu TMP0, TMP1, TMP3
| or AT, AT, TMP0
| lw CARG2, DISPATCH_GL(tmpbuf.buf)(DISPATCH)
| bnez AT, ->fff_fallback // Fallback for > 1-char strings.
|. lbu TMP0, STR:CARG1[1]
| addu TMP2, CARG2, CARG3
@@ -1762,14 +1763,14 @@ static void build_subroutines(BuildCtx *ctx)
| beqz NARGS8:RC, ->fff_fallback
|. li AT, LJ_TSTR
| bne CARG3, AT, ->fff_fallback
|. lw TMP1, DISPATCH_GL(tmpbuf.sz)(DISPATCH)
| lw CARG3, STR:CARG1->len
|. lw CARG2, DISPATCH_GL(tmpbuf.b)(DISPATCH)
| lw CARG3, STR:CARG1->len
| lw TMP1, DISPATCH_GL(tmpbuf.e)(DISPATCH)
| addiu CARG1, STR:CARG1, #STR
| lw CARG2, DISPATCH_GL(tmpbuf.buf)(DISPATCH)
| sltu AT, TMP1, CARG3
| addu CARG4, CARG2, CARG3
| sltu AT, TMP1, CARG4
| bnez AT, ->fff_fallback
|. addu TMP3, CARG1, CARG3
| addu CARG4, CARG2, CARG3
|1: // Reverse string copy.
| lbu TMP1, 0(CARG1)
| sltu AT, CARG1, TMP3
@@ -1787,11 +1788,12 @@ static void build_subroutines(BuildCtx *ctx)
| beqz NARGS8:RC, ->fff_fallback
|. li AT, LJ_TSTR
| bne CARG3, AT, ->fff_fallback
|. lw TMP1, DISPATCH_GL(tmpbuf.sz)(DISPATCH)
| lw CARG3, STR:CARG1->len
|. lw CARG2, DISPATCH_GL(tmpbuf.b)(DISPATCH)
| lw CARG3, STR:CARG1->len
| lw TMP1, DISPATCH_GL(tmpbuf.e)(DISPATCH)
| addiu CARG1, STR:CARG1, #STR
| lw CARG2, DISPATCH_GL(tmpbuf.buf)(DISPATCH)
| sltu AT, TMP1, CARG3
| addu TMP3, CARG2, CARG3
| sltu AT, TMP1, TMP3
| bnez AT, ->fff_fallback
|. addu TMP3, CARG1, CARG3
| move CARG4, CARG2