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committer: mfx <mfx> 977230259 +0000
This commit is contained in:
Markus F.X.J. Oberhumer 2000-12-19 12:50:59 +00:00
parent 82eb15c670
commit e5647cb0aa
2 changed files with 6 additions and 14 deletions
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2
src/stub/Makefile
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@ -102,7 +102,7 @@ endif
default:
@echo "UPX info: type 'make all' if you have all the needed build tools."
all: stubs upxb upxd
all: stubs ## upxb upxd
stubs: $(STUBS)

18
src/stub/macros.ash
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@ -95,25 +95,17 @@ cjt16_L2:
;; ============= 32-BIT CALLTRICK & JUMPTRICK
;; =============
;; call & jump & Jxx trick : 3 in 1
;; call & jump trick : 2 in 1
%macro cjt32 1
%ifdef __CALLTR00__
mov bh, 0x0f ; avoid displ and literal in same instr
mov ecx, 'TEXL'
calltrickloop:
mov al, [edi]
inc edi
sub al, 0x80 ; base of Jxx <d32>
cmp al, 0x8f - 0x80 ; span of Jxx <d32>
ja ct2 ; not Jxx <d32>
cmp byte [edi -2], bh ; prefix opcode of Jxx <d32>
je ct3
ct2:
sub al, 0xE8 - 0x80 ; base of JMP/CALL <d32>
sub al, 0xE8
ct1:
cmp al, 0xE9 - 0xE8 ; span of JMP/CALL <d32>
cmp al, 1
ja calltrickloop
ct3:
%ifdef __CTCLEVE1__
cmp byte [edi], '?'
jnz calltrickloop
@ -130,14 +122,14 @@ ct3:
xchg al, ah
%endif; __CALLTR02__
sub eax, edi
sub bl, 0xE8 ; base of JMP/CALL <d32>
sub bl, 0xE8
%ifnidn %1,0
add eax, %1
%endif
mov [edi], eax
add edi, byte 5
mov al, bl
loop ct1 ; no Jxx <d32> next: needs 0x0f prefix first
loop ct1
%else; __CALLTR10__
;; 32-bit call XOR jump trick
mov ecx, 'TEXL'