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x86 assembler:

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* Adjust rip-relative offsets using values known from calcsize, instead of reinterpreting the tail of instruction. This is simpler and remains the same regardless of particular codes used in opcode table.
* Reduced maxinfolen to 8.
- 'jmp imm64' and 64-bit versions of 'in' do not exist, removed.

git-svn-id: trunk@17546 -
This commit is contained in:
sergei 2011-05-23 20:43:50 +00:00
parent cbcece1ae6
commit d89aeeadaf
4 changed files with 14 additions and 20 deletions
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6
compiler/i386/i386tab.inc
View File

@ -2369,7 +2369,7 @@
( (
opcode : A_IN; opcode : A_IN;
ops : 2; ops : 2;
optypes : (ot_reg_ax or ot_bits32 or ot_bits64,ot_immediate,ot_none); optypes : (ot_reg_ax or ot_bits32,ot_immediate,ot_none);
code : #208#1#229#21; code : #208#1#229#21;
flags : if_8086 or if_sb flags : if_8086 or if_sb
), ),
@ -2383,7 +2383,7 @@
( (
opcode : A_IN; opcode : A_IN;
ops : 2; ops : 2;
optypes : (ot_reg_ax or ot_bits32 or ot_bits64,ot_reg_dx,ot_none); optypes : (ot_reg_ax or ot_bits32,ot_reg_dx,ot_none);
code : #208#1#237; code : #208#1#237;
flags : if_8086 flags : if_8086
), ),
@ -2530,7 +2530,7 @@
( (
opcode : A_JMP; opcode : A_JMP;
ops : 1; ops : 1;
optypes : (ot_immediate or ot_bits16 or ot_bits32 or ot_bits64,ot_none,ot_none); optypes : (ot_immediate or ot_bits16 or ot_bits32,ot_none,ot_none);
code : #208#1#233#52; code : #208#1#233#52;
flags : if_8086 or if_pass2 flags : if_8086 or if_pass2
), ),

15
compiler/x86/aasmcpu.pas
View File

@ -172,7 +172,7 @@ interface
{$else x86_64} {$else x86_64}
instabentries = {$i i386nop.inc} instabentries = {$i i386nop.inc}
{$endif x86_64} {$endif x86_64}
maxinfolen = 11; maxinfolen = 8;
MaxInsChanges = 3; { Max things a instruction can change } MaxInsChanges = 3; { Max things a instruction can change }
type type
@ -2358,17 +2358,10 @@ implementation
if oper[opidx]^.ref^.base=NR_RIP then if oper[opidx]^.ref^.base=NR_RIP then
begin begin
currabsreloc:=RELOC_RELATIVE; currabsreloc:=RELOC_RELATIVE;
{ Adjust reloc value depending of immediate operand size, { Adjust reloc value by number of bytes following the displacement,
but not if offset is specified by literal constant } but not if displacement is specified by literal constant }
if Assigned(currsym) then if Assigned(currsym) then
case Ord(codes^) of Dec(currval,InsEnd-objdata.CurrObjSec.Size-ea_data.bytes);
12,13,14,16,17,18,20,21,22:
Dec(currval, 1);
24,25,26:
Dec(currval, 2);
32,33,34,172,173,174:
Dec(currval, 4);
end;
end end
else else
{$endif x86_64} {$endif x86_64}

7
compiler/x86/x86ins.dat
View File

@ -792,12 +792,13 @@ reg16,imm8 \324\1\x6B\100\15 286
reg16,imm \324\1\x69\100\31 286,SW reg16,imm \324\1\x69\100\31 286,SW
rm8 \1\xF6\205 8086 rm8 \1\xF6\205 8086
; 64-bit variant does not exist
[IN,inX] [IN,inX]
(Ch_Wop2, Ch_Rop1, Ch_None) (Ch_Wop2, Ch_Rop1, Ch_None)
reg_al,imm \1\xE4\25 8086,SB reg_al,imm \1\xE4\25 8086,SB
reg_ax|32|64,imm \320\1\xE5\25 8086,SB reg_ax|32,imm \320\1\xE5\25 8086,SB
reg_al,reg_dx \1\xEC 8086 reg_al,reg_dx \1\xEC 8086
reg_ax|32|64,reg_dx \320\1\xED 8086 reg_ax|32,reg_dx \320\1\xED 8086
[INC,incX] [INC,incX]
(Ch_Mop1, Ch_WFlags, Ch_None) (Ch_Mop1, Ch_WFlags, Ch_None)
@ -876,7 +877,7 @@ imm \1\xE3\50 X86_64
[JMP,jmpX] [JMP,jmpX]
(Ch_ROp1, Ch_None, Ch_None) (Ch_ROp1, Ch_None, Ch_None)
imm8 \1\xEB\50 8086,PASS2 imm8 \1\xEB\50 8086,PASS2
imm16|32|64 \320\1\xE9\64 8086,PASS2 imm16|32 \320\1\xE9\64 8086,PASS2
rm16|32|64 \320\1\xFF\204 8086 rm16|32|64 \320\1\xFF\204 8086
imm|short \1\xEB\50 8086,PASS2 imm|short \1\xEB\50 8086,PASS2
imm|near \320\1\xE9\64 8086,ND,PASS2 imm|near \320\1\xE9\64 8086,ND,PASS2

6
compiler/x86_64/x8664tab.inc
View File

@ -2306,7 +2306,7 @@
( (
opcode : A_IN; opcode : A_IN;
ops : 2; ops : 2;
optypes : (ot_reg_ax or ot_bits32 or ot_bits64,ot_immediate,ot_none); optypes : (ot_reg_ax or ot_bits32,ot_immediate,ot_none);
code : #208#1#229#21; code : #208#1#229#21;
flags : if_8086 or if_sb flags : if_8086 or if_sb
), ),
@ -2320,7 +2320,7 @@
( (
opcode : A_IN; opcode : A_IN;
ops : 2; ops : 2;
optypes : (ot_reg_ax or ot_bits32 or ot_bits64,ot_reg_dx,ot_none); optypes : (ot_reg_ax or ot_bits32,ot_reg_dx,ot_none);
code : #208#1#237; code : #208#1#237;
flags : if_8086 flags : if_8086
), ),
@ -2453,7 +2453,7 @@
( (
opcode : A_JMP; opcode : A_JMP;
ops : 1; ops : 1;
optypes : (ot_immediate or ot_bits16 or ot_bits32 or ot_bits64,ot_none,ot_none); optypes : (ot_immediate or ot_bits16 or ot_bits32,ot_none,ot_none);
code : #208#1#233#52; code : #208#1#233#52;
flags : if_8086 or if_pass2 flags : if_8086 or if_pass2
), ),