Compare commits

..

4 Commits

Author SHA1 Message Date
Giulio De Pasquale
696ab2ce27 Aggiunto bytecode per criptare 2017-05-25 19:03:11 +02:00
Giulio De Pasquale
b0a4e7bb2b Sistemata size in insCode,Stack,Data 2017-05-25 18:47:56 +02:00
Giulio De Pasquale
c67bcdabab Sistemata size in insCode,Stack,Data 2017-05-25 18:46:32 +02:00
Giulio De Pasquale
f78fe540dd Sistemata size in insCode,Stack,Data 2017-05-25 18:46:23 +02:00
4 changed files with 137 additions and 6 deletions

130
asms/encrypt.pstc Normal file
View File

@ -0,0 +1,130 @@
def datastrlen:
###############
# r0 = offset of str in data
# retval (r0) = strlen
###############
push r1
push r2
push r3
movr s2, r0
movi s1, 0
lodr s0, s2
cmpb s0, 0
jpei exit
loop:
movi s2, 0
addi s1, 1
addr s2, s1
lodr s0, s2
cmpb s0, 0
debg
jpni loop
exit:
movr r0, s1
poop r3
poop r2
poop r1
retn
def round: # round(uint16_t text[2])
#################
# r0 = offset of text[0] in data
# r1 = offset of text[1] in data
# r2 = text[0]
# r3 = text[1]
# retval = void
################
push r1
push r2
push r3
lodr r2, r0 # text[0]
lodr r3, r1 # text[1]
movi s0, 0 # i
movi s1, 0 # sum
loop:
push s0 # saving i
addi s1, 0x626f # sum += delta
push s1 # saving sum
# s0 and s1 will be used as tmps
#########
# calc v0
#########
movr s0, r3
shli s0, 4
addi s0, 0x7065 # s0 = (text[1] << 4) + k0
movr s1, r3
poop s3 # restoring sum in s3
addr s1, s3 # s1 = text[1] + sum
push s3 # saving sum again
xorr s0, s1 # s0 = ((text[1] << 4) + k0) ^ (text[1] + sum)
push s0
movr s0, r3
shri s0, 5
addi s0, 0x7065 # s0 = (text[1] >> 5) + k1
poop s1
xorr s0, s1 # s0 = ((text[1] << 4) + k0) ^ (text[1] + sum) ^ ((text[1] >> 5) + k1)
addr r2, s0 # r2 += s0
#########
# calc v1
#########
movr s0, r2
shli s0, 4
addi s0, 0x7275 # s0 = (text[0] << 4) + k2
movr s1, r2
poop s3 # restoring sum in s3
addr s1, s3 # s1 = text[0] + sum
push s3 # saving sum again
xorr s0, s1 # s0 = ((text[0] << 4) + k2) ^ (text[0] + sum)
push s0
movr s0, r2
shri s0, 5
addi s0, 0x6e73 # s0 = (text[0] >> 5) + k3
poop s1
xorr s0, s1 # s0 = ((text[0] << 4) + k2) ^ (text[0] + sum) ^ ((text[0] >> 5) + k3)
addr r3, s0 # r3 += s0
######
# end loop
#####
poop s1 # restoring sum
poop s0 # restoring i
addi s0, 1
cmpb s0, 127 # while (i < 128)
jpbi loop
# saving the values
strr r0, r2
strr r1, r3
poop r3
poop r2
poop r1
retn
def main:
movi r0, 0xadde
movi r1, 0x0bb0
stri 0, r0
stri 2, r1
movi r0, 0x0bb0
movi r1, 0xcefa
stri 0x4, r0
stri 0x6, r1
movi r0, 0
call datastrlen
movr r2, r0
movi s0, 0
encrypt:
push s0
movi r0, 0
movi r1, 2
addr r0, s0
addr r1, s0
call round
poop s0
addi s0, 1
cmpr s0, r2
jpbi encrypt
lodi r0, 0
lodi r1, 2
lodi r2, 4
lodi r3, 6
debg
shit

View File

@ -24,6 +24,7 @@ int main(int argc, char *argv[]) {
bytecode = new uint8_t[bytecode_size]; bytecode = new uint8_t[bytecode_size];
bytecode_if.read((char *)bytecode, bytecode_size); bytecode_if.read((char *)bytecode, bytecode_size);
printf("SIZE READ: %d\n", bytecode_size);
VM vm((uint8_t *)argv[1], bytecode, bytecode_size); VM vm((uint8_t *)argv[1], bytecode, bytecode_size);
vm.run(); vm.run();
return 0; return 0;

View File

@ -54,7 +54,7 @@ bool VMAddrSpace::allocate(void) {
return true; return true;
} }
bool VMAddrSpace::insCode(uint8_t *buf, uint8_t size) { bool VMAddrSpace::insCode(uint8_t *buf, uint32_t size) {
if (code) { if (code) {
DBG_INFO(("Copying buffer into code section.\n")); DBG_INFO(("Copying buffer into code section.\n"));
memcpy(code, buf, size); memcpy(code, buf, size);
@ -65,7 +65,7 @@ bool VMAddrSpace::insCode(uint8_t *buf, uint8_t size) {
return true; return true;
} }
bool VMAddrSpace::insStack(uint8_t *buf, uint8_t size) { bool VMAddrSpace::insStack(uint8_t *buf, uint32_t size) {
if (stack) { if (stack) {
DBG_INFO(("Copying buffer into stack section.\n")); DBG_INFO(("Copying buffer into stack section.\n"));
memcpy(stack, buf, size); memcpy(stack, buf, size);
@ -76,7 +76,7 @@ bool VMAddrSpace::insStack(uint8_t *buf, uint8_t size) {
return true; return true;
} }
bool VMAddrSpace::insData(uint8_t *buf, uint8_t size) { bool VMAddrSpace::insData(uint8_t *buf, uint32_t size) {
if (this->code) { if (this->code) {
DBG_INFO(("Copying buffer into data section.\n")); DBG_INFO(("Copying buffer into data section.\n"));
memcpy(data, buf, size); memcpy(data, buf, size);

View File

@ -14,9 +14,9 @@ public:
VMAddrSpace(uint32_t ss, uint32_t cs, uint32_t ds); VMAddrSpace(uint32_t ss, uint32_t cs, uint32_t ds);
uint8_t *stack, *code, *data; uint8_t *stack, *code, *data;
bool allocate(void); bool allocate(void);
bool insStack(uint8_t *buf, uint8_t size); bool insStack(uint8_t *buf, uint32_t size);
bool insCode(uint8_t *buf, uint8_t size); bool insCode(uint8_t *buf, uint32_t size);
bool insData(uint8_t *buf, uint8_t size); bool insData(uint8_t *buf, uint32_t size);
}; };
#endif #endif