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https://github.com/upx/upx
synced 2025-09-28 19:06:07 +08:00
stub i086: use decimal constants.
This commit is contained in:
Markus F.X.J. Oberhumer
parent
8d54678ea1
commit
31bb6bedbd
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@ -160,10 +160,18 @@ endif
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ifneq ($(UPX_LZMA_VERSION),)
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ifneq ($(wildcard $(WATCOM)/binl/wcl),)
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# step 3: clean asm
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lzma_d_c%.S : tmp/lzma_d_c%.i cleanasm.py $(MAKEFILE_LIST)
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$(PYTHON) cleanasm.py --label-prefix=$(LABEL_PREFIX) $< $@
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tmp/lzma_d_c%.i : lzma_d_c.c wdis2gas.py $(MAKEFILE_LIST) $(TMP_DEPS)
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# step 2: compile, strip and disasm
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tmp/lzma_d_c%.i : tmp/lzma_d_c%.S $(MAKEFILE_LIST)
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$(call tc,gcc) -x assembler-with-cpp -c -o tmp/$T.o $<
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$(call tc,f-objstrip,tmp/$T.o)
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$(call tc,objdump) -b elf32-i386 -m i8086 -M intel -dr -j .text.LzmaDecode --no-show -w tmp/$T.o | $(RTRIM) | $(PERL) -pe 's/\bDWORD\b/dword/g; s/\bWORD\b/word/g; s/\bBYTE\b/byte/g; s/\bPTR\b/ptr/g;' > $@
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# step 1: compile, disasm and convert to gas syntax
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tmp/lzma_d_c%.S : lzma_d_c.c wdis2gas.py $(MAKEFILE_LIST) $(TMP_DEPS)
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rm -f tmp/$T*.i tmp/$T*.o tmp/$T*.obj tmp/$T*.S
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# compile
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ifneq ($(wildcard $(BC502DIR)/bin/bcc.exe),)
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@ -183,12 +191,9 @@ ifneq ($(wildcard $(WATCOM)/binl/wcl),)
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$(call tc,wdis) tmp/$T_wc.obj | $(RTRIM) > tmp/$T_wc.obj.disasm
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endif
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# convert
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$(PYTHON) wdis2gas.py tmp/$T_wc.obj.disasm tmp/$T.S
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$(call tc,gcc) -c -o tmp/$T.o tmp/$T.S
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$(call tc,f-objstrip,tmp/$T.o)
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$(call tc,objdump) -b elf32-i386 -m i8086 -M intel -dr -j .text.LzmaDecode --no-show -w tmp/$T.o | $(RTRIM) | $(PERL) -pe 's/\bDWORD\b/dword/g; s/\bWORD\b/word/g; s/\bBYTE\b/byte/g; s/\bPTR\b/ptr/g;' > $@
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$(PYTHON) wdis2gas.py tmp/$T_wc.obj.disasm $@
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.PRECIOUS: lzma_d_c%.i tmp/lzma_d_c%.i
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.PRECIOUS: tmp/lzma_d_c%.i tmp/lzma_d_c%.S
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endif
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endif
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@ -76,6 +76,11 @@ def main(argv):
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lines = filter(None, map(string.rstrip, lines))
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#
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#
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def inst_has_label(inst):
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return inst in [
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"call", "ja", "jae", "jb", "jbe", "jcxz", "je",
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"jg", "jge", "jl", "jle", "jmp", "jne", "loop",
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]
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labels = {}
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def parse_label(inst, args):
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k = v = None
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@ -174,12 +179,16 @@ def main(argv):
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label = m.group(1).strip()
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inst = m.group(2).strip()
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args = ""
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if m.group(3): args = m.group(3).strip()
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if m.group(3):
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args = m.group(3).strip()
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if not inst_has_label(inst):
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def hex2int(m): return str(int(m.group(0), 16))
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args = re.sub(r"\b0x[0-9a-fA-F]+\b", hex2int, args)
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#
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if 1 and inst in ["movl",] and re.search(r"\b[de]s\b", args):
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# work around a bug in objdump 2.17 (fixed in binutils 2.18)
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inst = "mov"
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m = re.search(r"^(.+?)\b0x0\s+(\w+):\s+(1|2|R_386_16|R_386_PC16)\s+(__\w+)$", args)
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m = re.search(r"^(.+?)\b0\s+(\w+):\s+(1|2|R_386_16|R_386_PC16)\s+(__\w+)$", args)
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if m:
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# 1 or 2 byte reloc
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args = m.group(1) + m.group(4)
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@ -197,10 +206,10 @@ def main(argv):
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if v[:2] == [1, 2]: # external 2-byte
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if k == "__aNahdiff":
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s = [
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["push", "word ptr [bp+(8|0x8)]"],
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["push", "word ptr [bp+(6|0x6)]"],
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["push", r"word ptr \[bp([+-](\d+|0x\w+))\]$"],
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["push", r"word ptr \[bp([+-](\d+|0x\w+))\]$"],
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["push", "word ptr [bp+8]"],
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["push", "word ptr [bp+6]"],
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["push", r"word ptr \[bp([+-](\d+))\]$"],
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["push", r"word ptr \[bp([+-](\d+))\]$"],
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]
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dpos = omatch(i-1, -4, s)
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if dpos:
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@ -208,7 +217,7 @@ def main(argv):
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continue
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if k in ["__LMUL", "__U4M",]:
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s1 = [
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["mov", "bx,0x300"],
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["mov", "bx,768"], # 0x300
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["xor", "cx,cx"],
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]
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s2 = [
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@ -234,7 +243,7 @@ def main(argv):
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continue
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if k == "__PIA":
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s = [
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["mov", "bx,0x1"],
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["mov", "bx,1"],
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["xor", "cx,cx"],
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]
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dpos = omatch(i-1, -2, s)
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@ -253,7 +262,7 @@ def main(argv):
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continue
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if opts.loop_rewrite and inst in ["loop"]:
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s = [
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["mov", r"^c[lx],0xb$"],
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["mov", r"^c[lx],11$"],
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["shr", "dx,1"],
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["rcr", "ax,1"],
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]
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@ -262,7 +271,7 @@ def main(argv):
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orewrite_inst(i, "M_shrd_11", "", dpos)
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continue
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s = [
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["mov", r"^c[lx],0x8$"],
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["mov", r"^c[lx],8$"],
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["shl", "ax,1"],
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["rcl", "dx,1"],
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]
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@ -271,12 +280,12 @@ def main(argv):
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orewrite_inst(i, "M_shld_8", "", dpos)
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continue
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s1 = [
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["mov", r"^c[lx],0x8$"],
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["mov", r"^c[lx],8$"],
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["shl", "si,1"],
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["rcl", "di,1"],
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]
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s2 = [
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["les", r"^bx,dword ptr \[bp([+-](\d+|0x\w+))\]$"],
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["les", r"^bx,dword ptr \[bp([+-](\d+))\]$"],
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]
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dpos1 = omatch(i-1, -3, s1)
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dpos2 = omatch(i+1, 1, s2)
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@ -286,13 +295,13 @@ def main(argv):
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continue
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s1 = [
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["mov", "ax,si"],
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["mov", r"^c[lx],0x8$"],
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["mov", r"^c[lx],8$"],
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["shl", "ax,1"],
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["rcl", "di,1"],
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]
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s2 = [
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["mov", "si,ax"],
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["les", r"^bx,dword ptr \[bp([+-](\d+|0x\w+))\]$"],
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["les", r"^bx,dword ptr \[bp([+-](\d+))\]$"],
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]
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dpos1 = omatch(i-1, -4, s1)
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dpos2 = omatch(i+1, 2, s2)
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@ -301,9 +310,9 @@ def main(argv):
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orewrite_inst(i, "M_shld_diax_8_bxcx", "", dpos1[-3:])
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continue
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s1 = [
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["mov", r"^c[lx],0x8$"],
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["shl", r"^word ptr \[bp([+-](\d+|0x\w+))\],1$"],
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["rcl", r"^word ptr \[bp([+-](\d+|0x\w+))\],1$"],
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["mov", r"^c[lx],8$"],
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["shl", r"^word ptr \[bp([+-](\d+))\],1$"],
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["rcl", r"^word ptr \[bp([+-](\d+))\],1$"],
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]
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s2 = [
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["mov", r"^dx,word ptr"],
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@ -322,17 +331,17 @@ def main(argv):
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orewrite_inst(i, m, "", dpos1)
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continue
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s1 = [
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["mov", r"^word ptr \[bp([+-](\d+|0x\w+))\],si$"],
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["mov", r"^word ptr \[bp([+-](\d+|0x\w+))\],di$"],
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["mov", r"^c[lx],0xb$"],
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["shr", r"^word ptr \[bp([+-](\d+|0x\w+))\],1$"],
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["rcr", r"^word ptr \[bp([+-](\d+|0x\w+))\],1$"],
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["mov", r"^word ptr \[bp([+-](\d+))\],si$"],
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["mov", r"^word ptr \[bp([+-](\d+))\],di$"],
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["mov", r"^c[lx],11$"],
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["shr", r"^word ptr \[bp([+-](\d+))\],1$"],
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["rcr", r"^word ptr \[bp([+-](\d+))\],1$"],
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]
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s2 = [
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["mov", r"^bx,word ptr"],
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["mov", r"^bx,word ptr"],
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["mov", r"^ax,word ptr \[bp([+-](\d+|0x\w+))\]$"],
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["mov", r"^dx,word ptr \[bp([+-](\d+|0x\w+))\]$"],
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["mov", r"^ax,word ptr \[bp([+-](\d+))\]$"],
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["mov", r"^dx,word ptr \[bp([+-](\d+))\]$"],
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]
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dpos1 = omatch(i-1, -5, s1)
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dpos2 = omatch(i+1, 4, s2)
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@ -347,10 +356,7 @@ def main(argv):
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orewrite_inst(i, m, "", dpos1 + dpos2[-2:])
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continue
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#
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if inst in [
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"call", "ja", "jae", "jb", "jbe", "jcxz", "je",
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"jg", "jge", "jl", "jle", "jmp", "jne", "loop",
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]:
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if inst_has_label(inst):
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k, v = parse_label(inst, args)
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olines[i][2] = None
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olines[i][3] = add_label(k, v)
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