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Tailor zlib to our needs:

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- disable support for fixed code blocks. Saves 2KByte code tables in ARM Flash memory
This commit is contained in:
pwpiwi 2015-04-30 17:57:26 +02:00
parent fb22897415
commit 28b9faccea
2 changed files with 12 additions and 2 deletions
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12
zlib/inflate.c
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@ -92,7 +92,11 @@
#endif
/* function prototypes */
#ifdef ZLIB_PM3_TUNED
extern void Dbprintf(const char *fmt, ...);
#else
local void fixedtables OF((struct inflate_state FAR *state));
#endif
local int updatewindow OF((z_streamp strm, const unsigned char FAR *end,
unsigned copy));
#ifdef BUILDFIXED
@ -258,6 +262,7 @@ int value;
used for threaded applications, since the rewriting of the tables and virgin
may not be thread-safe.
*/
#ifndef ZLIB_PM3_TUNED
local void fixedtables(state)
struct inflate_state FAR *state;
{
@ -361,7 +366,7 @@ void makefixed()
puts("\n };");
}
#endif /* MAKEFIXED */
#endif /* ZLIB_PM3_TUNED */
/*
Update the window with the last wsize (normally 32K) bytes written before
returning. If window does not exist yet, create it. This is only called
@ -841,6 +846,10 @@ int flush;
state->mode = STORED;
break;
case 1: /* fixed block */
#ifdef ZLIB_PM3_TUNED
Dbprintf("FATAL error. Compressed FPGA files with fixed code blocks are not supported!");
for(;;);
#else
fixedtables(state);
Tracev((stderr, "inflate: fixed codes block%s\n",
state->last ? " (last)" : ""));
@ -849,6 +858,7 @@ int flush;
DROPBITS(2);
goto inf_leave;
}
#endif
break;
case 2: /* dynamic block */
Tracev((stderr, "inflate: dynamic codes block%s\n",