diff options
Diffstat (limited to 'subx/012indirect_addressing.cc')
| -rw-r--r-- | subx/012indirect_addressing.cc | 96 |
1 files changed, 48 insertions, 48 deletions
diff --git a/subx/012indirect_addressing.cc b/subx/012indirect_addressing.cc index 304467f7..59147c2d 100644 --- a/subx/012indirect_addressing.cc +++ b/subx/012indirect_addressing.cc @@ -2,8 +2,8 @@ //: we'll now start providing data in a separate segment :(scenario add_r32_to_mem_at_r32) -% Reg[3].i = 0x10; -% Reg[0].i = 0x60; +% Reg[EBX].i = 0x10; +% Reg[EAX].i = 0x60; == 0x01 # code segment # op ModR/M SIB displacement immediate 01 18 # add EBX to *EAX @@ -28,8 +28,8 @@ case 0: // indirect addressing //: :(scenario add_mem_at_r32_to_r32) -% Reg[0].i = 0x60; -% Reg[3].i = 0x10; +% Reg[EAX].i = 0x60; +% Reg[EBX].i = 0x10; % write_mem_i32(0x60, 1); # op ModR/M SIB displacement immediate 03 18 # add *EAX to EBX @@ -51,9 +51,9 @@ case 0x03: { // add r/m32 to r32 //:: subtract :(scenario subtract_r32_from_mem_at_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 10); -% Reg[3].i = 1; +% Reg[EBX].i = 1; # op ModR/M SIB displacement immediate 29 18 # subtract EBX from *EAX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -64,9 +64,9 @@ case 0x03: { // add r/m32 to r32 //: :(scenario subtract_mem_at_r32_from_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 1); -% Reg[3].i = 10; +% Reg[EBX].i = 10; # op ModR/M SIB displacement immediate 2b 18 # subtract *EAX from EBX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -87,9 +87,9 @@ case 0x2b: { // subtract r/m32 from r32 //:: and :(scenario and_r32_with_mem_at_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c0d); -% Reg[3].i = 0xff; +% Reg[EBX].i = 0xff; # op ModR/M SIB displacement immediate 21 18 # and EBX with *EAX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -100,9 +100,9 @@ case 0x2b: { // subtract r/m32 from r32 //: :(scenario and_mem_at_r32_with_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x000000ff); -% Reg[3].i = 0x0a0b0c0d; +% Reg[EBX].i = 0x0a0b0c0d; # op ModR/M SIB displacement immediate 23 18 # and *EAX with EBX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -123,9 +123,9 @@ case 0x23: { // and r/m32 with r32 //:: or :(scenario or_r32_with_mem_at_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c0d); -% Reg[3].i = 0xa0b0c0d0; +% Reg[EBX].i = 0xa0b0c0d0; # op ModR/M SIB displacement immediate 09 18 # or EBX with *EAX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -136,9 +136,9 @@ case 0x23: { // and r/m32 with r32 //: :(scenario or_mem_at_r32_with_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c0d); -% Reg[3].i = 0xa0b0c0d0; +% Reg[EBX].i = 0xa0b0c0d0; # op ModR/M SIB displacement immediate 0b 18 # or *EAX with EBX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -159,9 +159,9 @@ case 0x0b: { // or r/m32 with r32 //:: xor :(scenario xor_r32_with_mem_at_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0xaabb0c0d); -% Reg[3].i = 0xa0b0c0d0; +% Reg[EBX].i = 0xa0b0c0d0; # op ModR/M SIB displacement immediate 31 18 # xor EBX with *EAX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -172,9 +172,9 @@ case 0x0b: { // or r/m32 with r32 //: :(scenario xor_mem_at_r32_with_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c0d); -% Reg[3].i = 0xa0b0c0d0; +% Reg[EBX].i = 0xa0b0c0d0; # op ModR/M SIB displacement immediate 33 18 # xor *EAX with EBX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -195,7 +195,7 @@ case 0x33: { // xor r/m32 with r32 //:: not :(scenario not_r32_with_mem_at_r32) -% Reg[3].i = 0x60; +% Reg[EBX].i = 0x60; # word at 0x60 is 0x0f0f00ff % write_mem_i32(0x60, 0x0f0f00ff); # op ModR/M SIB displacement immediate @@ -208,9 +208,9 @@ case 0x33: { // xor r/m32 with r32 //:: compare (cmp) :(scenario compare_mem_at_r32_with_r32_greater) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c0d); -% Reg[3].i = 0x0a0b0c07; +% Reg[EBX].i = 0x0a0b0c07; # op ModR/M SIB displacement immediate 39 18 # compare EBX with *EAX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -219,9 +219,9 @@ case 0x33: { // xor r/m32 with r32 +run: SF=0; ZF=0; OF=0 :(scenario compare_mem_at_r32_with_r32_lesser) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c07); -% Reg[3].i = 0x0a0b0c0d; +% Reg[EBX].i = 0x0a0b0c0d; # op ModR/M SIB displacement immediate 39 18 # compare EBX with *EAX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -230,9 +230,9 @@ case 0x33: { // xor r/m32 with r32 +run: SF=1; ZF=0; OF=0 :(scenario compare_mem_at_r32_with_r32_equal) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c0d); -% Reg[3].i = 0x0a0b0c0d; +% Reg[EBX].i = 0x0a0b0c0d; # op ModR/M SIB displacement immediate 39 18 # compare EBX with *EAX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -243,9 +243,9 @@ case 0x33: { // xor r/m32 with r32 //: :(scenario compare_r32_with_mem_at_r32_greater) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c07); -% Reg[3].i = 0x0a0b0c0d; +% Reg[EBX].i = 0x0a0b0c0d; # op ModR/M SIB displacement immediate 3b 18 # compare *EAX with EBX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -270,9 +270,9 @@ case 0x3b: { // set SF if r32 < r/m32 } :(scenario compare_r32_with_mem_at_r32_lesser) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c0d); -% Reg[3].i = 0x0a0b0c07; +% Reg[EBX].i = 0x0a0b0c07; # op ModR/M SIB displacement immediate 3b 18 # compare *EAX with EBX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -281,9 +281,9 @@ case 0x3b: { // set SF if r32 < r/m32 +run: SF=1; ZF=0; OF=0 :(scenario compare_r32_with_mem_at_r32_equal) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x0a0b0c0d); -% Reg[3].i = 0x0a0b0c0d; +% Reg[EBX].i = 0x0a0b0c0d; # op ModR/M SIB displacement immediate 3b 18 # compare *EAX with EBX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -294,8 +294,8 @@ case 0x3b: { // set SF if r32 < r/m32 //:: copy (mov) :(scenario copy_r32_to_mem_at_r32) -% Reg[3].i = 0xaf; -% Reg[0].i = 0x60; +% Reg[EBX].i = 0xaf; +% Reg[EAX].i = 0x60; # op ModR/M SIB displacement immediate 89 18 # copy EBX to *EAX # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX) @@ -306,7 +306,7 @@ case 0x3b: { // set SF if r32 < r/m32 //: :(scenario copy_mem_at_r32_to_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x000000af); # op ModR/M SIB displacement immediate 8b 18 # copy *EAX to EBX @@ -329,7 +329,7 @@ case 0x8b: { // copy r32 to r/m32 //:: jump :(scenario jump_mem_at_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 8); # op ModR/M SIB displacement immediate ff 20 # jump to *EAX @@ -363,7 +363,7 @@ case 0xff: { //:: push :(scenario push_mem_at_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % write_mem_i32(0x60, 0x000000af); % Reg[ESP].u = 0x14; # op ModR/M SIB displacement immediate @@ -385,7 +385,7 @@ case 6: { // push r/m32 to stack //:: pop :(scenario pop_mem_at_r32) -% Reg[0].i = 0x60; +% Reg[EAX].i = 0x60; % Reg[ESP].u = 0x10; % write_mem_i32(0x10, 0x00000030); # op ModR/M SIB displacement immediate @@ -414,7 +414,7 @@ case 0x8f: { // pop stack into r/m32 //:: special-case for loading address from disp32 rather than register :(scenario add_r32_to_mem_at_displacement) -% Reg[3].i = 0x10; // source +% Reg[EBX].i = 0x10; // source % write_mem_i32(0x60, 1); # op ModR/M SIB displacement immediate 01 1d 60 00 00 00 # add EBX to *0x60 @@ -432,8 +432,8 @@ case 5: // exception: mod 0b00 rm 0b101 => incoming disp32 //: :(scenario add_r32_to_mem_at_r32_plus_disp8) -% Reg[3].i = 0x10; // source -% Reg[0].i = 0x5e; // dest +% Reg[EBX].i = 0x10; // source +% Reg[EAX].i = 0x5e; // dest % write_mem_i32(0x60, 1); # op ModR/M SIB displacement immediate 01 58 02 # add EBX to *(EAX+2) @@ -459,8 +459,8 @@ case 1: // indirect + disp8 addressing break; :(scenario add_r32_to_mem_at_r32_plus_negative_disp8) -% Reg[3].i = 0x10; // source -% Reg[0].i = 0x61; // dest +% Reg[EBX].i = 0x10; // source +% Reg[EAX].i = 0x61; // dest % write_mem_i32(0x60, 1); # op ModR/M SIB displacement immediate 01 58 ff # add EBX to *(EAX-1) @@ -473,8 +473,8 @@ case 1: // indirect + disp8 addressing //: :(scenario add_r32_to_mem_at_r32_plus_disp32) -% Reg[3].i = 0x10; // source -% Reg[0].i = 0x5e; // dest +% Reg[EBX].i = 0x10; // source +% Reg[EAX].i = 0x5e; // dest % write_mem_i32(0x60, 1); # op ModR/M SIB displacement immediate 01 98 02 00 00 00 # add EBX to *(EAX+2) @@ -500,8 +500,8 @@ case 2: // indirect + disp32 addressing break; :(scenario add_r32_to_mem_at_r32_plus_negative_disp32) -% Reg[3].i = 0x10; // source -% Reg[0].i = 0x61; // dest +% Reg[EBX].i = 0x10; // source +% Reg[EAX].i = 0x61; // dest % write_mem_i32(0x60, 1); # op ModR/M SIB displacement immediate 01 98 ff ff ff ff # add EBX to *(EAX-1) |