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Work in progress on finishing encodings...

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This commit is contained in:
xolatile
2024-07-23 20:17:44 -04:00
parent daeaace9f8
commit a125c2be2b
5 changed files with 348 additions and 287 deletions
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16
source/assembler.c
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@ -175,10 +175,12 @@ static void build_special_2 (unsigned int operation) {
input_by (1, D16, data [operation - SPECIAL_2_BEGIN]);
}
static void build_jump_if (unsigned int operation, unsigned int size, unsigned int location) {
static void build_jump_if (unsigned int operation, unsigned int size, unsigned int ignore, unsigned int location) {
(void) ignore;
input (far (location) && (size == D32), 0x0f);
input (far (location), 0x80 + operation - JUMP_IF_BEGIN);
input (far (location), 0x80 + operation - JUMP_IF_BEGIN);
input (near (location), 0x70 + operation - JUMP_IF_BEGIN);
}
@ -219,6 +221,8 @@ static void build_move (unsigned int size, unsigned int to, unsigned int destina
build_at ((to == REG) && (from == MEM), destination);
build_at ((to == MEM) && (from == REG), source);
build_co ((to == REG) && (from == REG), destination, source);
input ((to == REG) && ((from == IMM) || (from == REL)), 0xb8 + 0x01 * (destination & 0x07));
input ((to == MEM) && (from == IMM), 0xc6 + 0x01 * (size != D8));
@ -230,6 +234,8 @@ static void build_move (unsigned int size, unsigned int to, unsigned int destina
input_at ((to == MEM) && (from == IMM), D32, destination, 0x1000);
input_by ((to == MEM) && (from == IMM), size, source);
input_at ((to == REG) && (from == REL), D32, source, 0x4010b0);
input_by ((to == REG) && (from == IMM) && (size == D64), D32, 0);
}
static void build_call (unsigned int from, unsigned int source) {
@ -352,8 +358,8 @@ void assemble (unsigned int count, unsigned int * array) {
build_special_2 (array [index + 0]);
index += 0;
} else if ((array [index] >= JUMP_IF_BEGIN) && (array [index] <= JUMP_IF_END)) {
build_jump_if (array [index + 0], array [index + 1], array [index + 2]);
index += 2;
build_jump_if (array [index + 0], array [index + 1], array [index + 2], array [index + 3]);
index += 3;
} else if ((array [index] >= MOVE_IF_BEGIN) && (array [index] <= MOVE_IF_END)) {
build_move_if (array [index + 0], array [index + 1], array [index + 2], array [index + 3], array [index + 4], array [index + 5]);
index += 5;
@ -382,7 +388,7 @@ void assemble (unsigned int count, unsigned int * array) {
build_push (array [index + 1], array [index + 2], array [index + 3]);
index += 3;
} else {
return;
exit (array [index]);
}
}