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Add code to calculate code buffer size based on devel time information.

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* lib/jit_aarch64-sz.c, lib/jit_arm-sz.c, lib/jit_hppa-sz.c,
	lib/jit_ia64-sz.c, lib/jit_mips-sz.c, lib/jit_ppc-sz.c,
	lib/jit_s390x-sz.c, lib/jit_size.c, lib/jit_sparc-sz.c,
	lib/jit_x86-sz.c: New files implementing static tables
	with longest known instructions length generated to match
	a lightning instruction. These tables should make it easier
	to make it very unlikely to ever miscalculate, or by too
	much, the size of a code buffer.

	* lib/jit_size.c: New file that aids to either collect
	jit code size information, or use the information depending
	on build options.

	* size.c: New helper file that parses input for, and create
	an initial jit_$arch-sz.c file, that needs some minor edit
	for arches with multiple configurations.

	* configure.ac, Makefile.am: Add the new, devel mode only
	--enable-devel-get-jit-size configure option, that sets
	compile time flags to collect jit code size information,
	that will be used as input for the "noinst size program".

	* lib/jit_aarch64.c, lib/jit_arm.c, lib/jit_disasm.c,
	lib/jit_hppa.c, lib/jit_ia64.c, lib/jit_memory.c,
	lib/jit_mips.c, lib/jit_ppc.c, lib/jit_s390x.c,
	lib/jit_sparc.c, lib/jit_x86.c, lib/lightning.c: Minor
	changes for the --enable-devel-get-jit-size build mode,
	as well as the "production build mode" with jit code
	size information.
This commit is contained in:
pcpa 2013-09-24 03:31:54 -03:00
parent 95e3fbc8bc
commit b768fab8b1
29 changed files with 5269 additions and 48 deletions
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23
lib/jit_memory.c
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@ -86,29 +86,6 @@ jit_free(jit_pointer_t *ptr)
*ptr = NULL;
}
#if HAVE_MREMAP
jit_bool_t
_jit_remap(jit_state_t *_jit)
{
jit_uint8_t *code;
jit_word_t length;
length = _jitc->pool.length * 1024 * (_jitc->mult + 1);
code = mremap(_jit->code.ptr, _jit->code.length, length, 0, NULL);
if (code != MAP_FAILED) {
assert(code == _jit->code.ptr);
++_jitc->mult;
_jit->code.length = length;
_jitc->code.end = _jit->code.ptr + _jit->code.length - 64;
return (1);
}
return (0);
}
#endif
static void *
jit_default_alloc_func(size_t size)
{