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Code Issues 1 Releases Wiki Activity

More work on sysir, add initial work for recursive types.

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This commit is contained in:
Calvin Rose
2023-08-06 15:50:21 -05:00
parent 7cc176f0c0
commit cfa32d58a7
2 changed files with 482 additions and 287 deletions
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21
examples/sysdialect_asm.janet
View File

@@ -1,10 +1,17 @@
(def ir-asm
@{:instructions
'((add 2 1 0)
(return 2))
:types
'(s32 s32 s32)
:parameter-count 2
:link-name "add_2_ints"})
'((prim 0 s32)
(bind 0 0)
(bind 1 0)
(bind 2 0)
#(constant 0 10)
(constant 1 20)
(add 2 1 0)
(return 2))
:parameter-count 0
:link-name "main"})
(-> ir-asm sysir/asm sysir/to-c print)
(def as (sysir/asm ir-asm))
(print :did-assemble)
(os/sleep 0.5)
(print (sysir/to-c as))

748
src/core/sysir.c
View File

@@ -22,7 +22,7 @@
/* TODO
* [ ] pointer math, pointer types
* [ ] callk - allow linking to other named functions
* [x] callk - allow linking to other named functions
* [ ] composite types - support for load, store, move, and function args.
* [ ] Have some mechanism for field access (dest = src.offset)
* [ ] Related, move type creation as opcodes like in SPIRV - have separate virtual "type slots" and value slots for this.
@@ -89,18 +89,9 @@ static const char *prim_names_by_id[] = {
"boolean",
};
typedef enum {
JANET_SYSOPVAR_THREE,
JANET_SYSOPVAR_TWO,
JANET_SYSOPVAR_ONE,
JANET_SYSOPVAR_JUMP,
JANET_SYSOPVAR_BRANCH,
JANET_SYSOPVAR_CALL,
JANET_SYSOPVAR_CONSTANT
} JanetSysOpVariant;
typedef enum {
JANET_SYSOP_MOVE,
JANET_SYSOP_CAST,
JANET_SYSOP_ADD,
JANET_SYSOP_SUBTRACT,
JANET_SYSOP_MULTIPLY,
@@ -124,43 +115,14 @@ typedef enum {
JANET_SYSOP_RETURN,
JANET_SYSOP_JUMP,
JANET_SYSOP_BRANCH,
JANET_SYSOP_PUSH1,
JANET_SYSOP_PUSH2,
JANET_SYSOP_PUSH3,
JANET_SYSOP_ADDRESS,
JANET_SYSOP_CALLK,
JANET_SYSOP_TYPE_PRIMITIVE,
JANET_SYSOP_TYPE_STRUCT,
JANET_SYSOP_TYPE_BIND,
JANET_SYSOP_ARG
} JanetSysOp;
static const JanetSysOpVariant op_variants[] = {
JANET_SYSOPVAR_TWO, /* JANET_SYSOP_MOVE */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_ADD */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_SUBTRACT */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_MULTIPLY */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_DIVIDE */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_BAND */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_BOR */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_BXOR */
JANET_SYSOPVAR_TWO, /* JANET_SYSOP_BNOT */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_SHL */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_SHR */
JANET_SYSOPVAR_TWO, /* JANET_SYSOP_LOAD */
JANET_SYSOPVAR_TWO, /* JANET_SYSOP_STORE */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_GT */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_LT */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_EQ */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_NEQ */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_GTE */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_LTE */
JANET_SYSOPVAR_CONSTANT, /* JANET_SYSOP_CONSTANT */
JANET_SYSOPVAR_CALL, /* JANET_SYSOP_CALL */
JANET_SYSOPVAR_ONE, /* JANET_SYSOP_RETURN */
JANET_SYSOPVAR_JUMP, /* JANET_SYSOP_JUMP */
JANET_SYSOPVAR_BRANCH, /* JANET_SYSOP_BRANCH */
JANET_SYSOPVAR_ONE, /* JANET_SYSOP_PUSH1 */
JANET_SYSOPVAR_TWO, /* JANET_SYSOP_PUSH1 */
JANET_SYSOPVAR_THREE, /* JANET_SYSOP_PUSH1 */
JANET_SYSOPVAR_TWO, /* JANET_SYSOP_ADDRESS */
};
typedef struct {
const char *name;
JanetSysOp op;
@@ -170,11 +132,13 @@ static const JanetSysInstrName sys_op_names[] = {
{"add", JANET_SYSOP_ADD},
{"address", JANET_SYSOP_ADDRESS},
{"band", JANET_SYSOP_BAND},
{"bind", JANET_SYSOP_TYPE_BIND},
{"bnot", JANET_SYSOP_BNOT},
{"bor", JANET_SYSOP_BOR},
{"branch", JANET_SYSOP_BRANCH},
{"bxor", JANET_SYSOP_BXOR},
{"call", JANET_SYSOP_CALL},
{"cast", JANET_SYSOP_CAST},
{"constant", JANET_SYSOP_CONSTANT},
{"divide", JANET_SYSOP_DIVIDE},
{"eq", JANET_SYSOP_EQ},
@@ -187,16 +151,20 @@ static const JanetSysInstrName sys_op_names[] = {
{"move", JANET_SYSOP_MOVE},
{"multiply", JANET_SYSOP_MULTIPLY},
{"neq", JANET_SYSOP_NEQ},
{"push1", JANET_SYSOP_PUSH1},
{"push2", JANET_SYSOP_PUSH2},
{"push3", JANET_SYSOP_PUSH3},
{"prim", JANET_SYSOP_TYPE_PRIMITIVE},
{"return", JANET_SYSOP_RETURN},
{"shl", JANET_SYSOP_SHL},
{"shr", JANET_SYSOP_SHR},
{"store", JANET_SYSOP_STORE},
{"struct", JANET_SYSOP_TYPE_STRUCT},
{"subtract", JANET_SYSOP_SUBTRACT},
};
typedef struct {
size_t field_count;
JanetPrim prim;
} JanetSysTypeInfo;
typedef struct {
JanetSysOp opcode;
union {
@@ -208,6 +176,7 @@ typedef struct {
struct {
uint32_t dest;
uint32_t callee;
uint32_t arg_count;
} call;
struct {
uint32_t dest;
@@ -227,6 +196,26 @@ typedef struct {
uint32_t dest;
uint32_t constant;
} constant;
struct {
uint32_t dest;
uint32_t constant;
uint32_t arg_count;
} callk;
struct {
uint32_t dest_type;
uint32_t prim;
} type_prim;
struct {
uint32_t dest_type;
uint32_t arg_count;
} type_types;
struct {
uint32_t dest;
uint32_t type;
} type_bind;
struct {
uint32_t args[3];
} arg;
};
int32_t line;
int32_t column;
@@ -235,179 +224,81 @@ typedef struct {
typedef struct {
JanetString link_name;
uint32_t instruction_count;
uint32_t type_count;
uint32_t register_count;
uint32_t type_def_count;
uint32_t constant_count;
JanetPrim *types;
JanetPrim return_type;
uint32_t return_type;
uint32_t *types;
JanetSysTypeInfo *type_defs;
JanetSysInstruction *instructions;
Janet *constants;
uint32_t parameter_count;
} JanetSysIR;
/* Parse assembly */
static void instr_assert_length(JanetTuple tup, int32_t len, Janet x) {
if (janet_tuple_length(tup) != len) {
janet_panicf("expected instruction of length %d, got %v", len, x);
}
}
static uint32_t instr_read_operand(Janet x, int32_t max_operand) {
int32_t operand = 0;
int fail = 0;
if (!janet_checkint(x)) fail = 1;
if (!fail) {
operand = janet_unwrap_integer(x);
if (operand < 0) fail = 1;
if (operand > max_operand) fail = 1;
static void instr_assert_min_length(JanetTuple tup, int32_t minlen, Janet x) {
if (janet_tuple_length(tup) < minlen) {
janet_panicf("expected instruction of at least ength %d, got %v", minlen, x);
}
if (fail) janet_panicf("expected integer operand in range [0, %d], got %v", max_operand, x);
return (uint32_t) operand;
}
static uint32_t instr_read_label(Janet x, JanetTable *labels, int32_t max_label) {
int32_t operand = 0;
int fail = 0;
static uint32_t instr_read_operand(Janet x, JanetSysIR *ir) {
if (!janet_checkuint(x)) janet_panicf("expected non-negative integer operand, got %v", x);
uint32_t operand = (uint32_t) janet_unwrap_number(x);
if (operand >= ir->register_count) {
ir->register_count = operand + 1;
}
return operand;
}
static uint32_t instr_read_type_operand(Janet x, JanetSysIR *ir) {
if (!janet_checkuint(x)) janet_panicf("expected non-negative integer operand, got %v", x);
uint32_t operand = (uint32_t) janet_unwrap_number(x);
if (operand >= ir->type_def_count) {
ir->type_def_count = operand + 1;
}
return operand;
}
static JanetPrim instr_read_prim(Janet x) {
if (!janet_checktype(x, JANET_SYMBOL)) {
janet_panicf("expected primitive type, got %v", x);
}
JanetSymbol sym_type = janet_unwrap_symbol(x);
const JanetPrimName *namedata = janet_strbinsearch(prim_names,
sizeof(prim_names) / sizeof(prim_names[0]), sizeof(prim_names[0]), sym_type);
if (NULL == namedata) {
janet_panicf("unknown type %v", x);
}
return namedata->prim;
}
static uint32_t instr_read_label(Janet x, JanetTable *labels) {
Janet check = janet_table_get(labels, x);
if (!janet_checktype(check, JANET_NIL)) return (uint32_t) janet_unwrap_number(check);
if (!janet_checkint(x)) fail = 1;
if (!fail) {
operand = janet_unwrap_integer(x);
if (operand < 0) fail = 1;
if (operand > max_label) fail = 1;
}
if (fail) janet_panicf("expected label in range [0, %d], got %v", max_label, x);
return (uint32_t) operand;
}
static void janet_sysir_init_types(JanetSysIR *out, JanetView types) {
uint32_t type_count = types.len;
out->types = janet_malloc(sizeof(JanetPrim) * type_count);
for (int32_t i = 0; i < types.len; i++) {
Janet x = types.items[i];
if (!janet_checktype(x, JANET_SYMBOL)) {
janet_panicf("expected primitive type, got %v", x);
}
JanetSymbol sym_type = janet_unwrap_symbol(x);
const JanetPrimName *namedata = janet_strbinsearch(prim_names,
sizeof(prim_names) / sizeof(prim_names[0]), sizeof(prim_names[0]), sym_type);
if (NULL == namedata) {
janet_panicf("unknown type %v", x);
}
out->types[i] = namedata->prim;
}
out->type_count = type_count;
}
#define U_FLAGS ((1u << JANET_PRIM_U8) | (1u << JANET_PRIM_U16) | (1u << JANET_PRIM_U32) | (1u << JANET_PRIM_U64))
#define S_FLAGS ((1u << JANET_PRIM_S8) | (1u << JANET_PRIM_S16) | (1u << JANET_PRIM_S32) | (1u << JANET_PRIM_S64))
#define F_FLAGS ((1u << JANET_PRIM_F32) | (1u << JANET_PRIM_F64))
#define NUMBER_FLAGS (U_FLAGS | S_FLAGS | F_FLAGS)
#define INTEGER_FLAGS (U_FLAGS | S_FLAGS)
/* Mainly check the instruction arguments are of compatible types */
static void check_instruction_well_formed(JanetSysInstruction instruction, Janet x, JanetSysIR *ir) {
int fail = 0;
switch (instruction.opcode) {
/* TODO */
/* case JANET_SYSOP_CALL: */
/* case JANET_SYSOP_CONSTANT: */
/* case JANET_SYSOP_JUMP: */
/* case JANET_SYSOP_ADDRESS: */
default:
break;
case JANET_SYSOP_ADD:
case JANET_SYSOP_SUBTRACT:
case JANET_SYSOP_MULTIPLY:
case JANET_SYSOP_DIVIDE: {
JanetPrim pdest = ir->types[instruction.three.dest];
JanetPrim plhs = ir->types[instruction.three.lhs];
JanetPrim prhs = ir->types[instruction.three.rhs];
if ((pdest != prhs) || (prhs != plhs)) fail = 1;
if (!((1u << pdest) & NUMBER_FLAGS)) fail = 1;
break;
}
case JANET_SYSOP_LT:
case JANET_SYSOP_LTE:
case JANET_SYSOP_GT:
case JANET_SYSOP_GTE:
case JANET_SYSOP_EQ:
case JANET_SYSOP_NEQ: {
JanetPrim pdest = ir->types[instruction.three.dest];
JanetPrim plhs = ir->types[instruction.three.lhs];
JanetPrim prhs = ir->types[instruction.three.rhs];
if ((pdest != JANET_PRIM_BOOLEAN) || (prhs != plhs)) fail = 1;
if (!((1u << pdest) & NUMBER_FLAGS)) fail = 1;
break;
}
case JANET_SYSOP_BAND:
case JANET_SYSOP_BOR:
case JANET_SYSOP_BXOR: {
JanetPrim pdest = ir->types[instruction.three.dest];
JanetPrim plhs = ir->types[instruction.three.lhs];
JanetPrim prhs = ir->types[instruction.three.rhs];
if (pdest != plhs) fail = 1;
if (pdest != prhs) fail = 1;
if (!((1u << pdest) & INTEGER_FLAGS)) fail = 1;
break;
}
case JANET_SYSOP_SHR:
case JANET_SYSOP_SHL: {
JanetPrim pdest = ir->types[instruction.three.dest];
JanetPrim plhs = ir->types[instruction.three.lhs];
JanetPrim prhs = ir->types[instruction.three.rhs];
if (pdest != plhs) fail = 1;
if (!((1u << pdest) & INTEGER_FLAGS)) fail = 1;
if (!((1u << prhs) & U_FLAGS)) fail = 1;
break;
}
case JANET_SYSOP_BRANCH: {
JanetPrim pcond = ir->types[instruction.branch.cond];
if (!((1u << pcond) & ((1u << JANET_PRIM_BOOLEAN) | INTEGER_FLAGS))) fail = 1;
break;
}
case JANET_SYSOP_MOVE: {
JanetPrim pdest = ir->types[instruction.two.dest];
JanetPrim psrc = ir->types[instruction.two.src];
if (pdest != psrc) fail = 1;
break;
}
case JANET_SYSOP_BNOT: {
JanetPrim pdest = ir->types[instruction.two.dest];
JanetPrim psrc = ir->types[instruction.two.src];
if (pdest != psrc) fail = 1;
if (!((1u << pdest) & INTEGER_FLAGS)) fail = 1;
break;
}
case JANET_SYSOP_ADDRESS: {
JanetPrim pdest = ir->types[instruction.two.dest];
if (pdest != JANET_PRIM_POINTER) fail = 1;
break;
}
}
if (fail) janet_panicf("invalid types for instruction %V", x);
if (!janet_checkuint(x)) janet_panicf("expected non-negative integer label, got %v", x);
return (uint32_t) janet_unwrap_number(x);
}
static void janet_sysir_init_instructions(JanetSysIR *out, JanetView instructions) {
uint32_t pending_count = instructions.len;
JanetSysInstruction *ir = janet_malloc(sizeof(JanetSysInstruction) * pending_count);
// TODO - add labels back
JanetSysInstruction *ir = janet_malloc(sizeof(JanetSysInstruction) * 100);
out->instructions = ir;
uint32_t cursor = 0;
int32_t max_op = out->type_count - 1;
int32_t max_label = 0;
int inside_call = false;
/* TODO - preserve labels in generated output (c) */
JanetTable *labels = janet_table(0);
JanetTable *constant_cache = janet_table(0);
uint32_t next_constant = 0;
for (int32_t i = 0; i < instructions.len; i++) {
Janet x = instructions.items[i];
if (janet_checktype(x, JANET_KEYWORD)) {
janet_table_put(labels, x, janet_wrap_integer(max_label));
} else {
max_label++;
}
}
pending_count = max_label;
max_label--;
/* Parse instructions */
Janet x = janet_wrap_nil();
for (int32_t i = 0; i < instructions.len; i++) {
x = instructions.items[i];
@@ -432,127 +323,366 @@ static void janet_sysir_init_instructions(JanetSysIR *out, JanetView instruction
janet_panicf("unknown instruction %.4p", x);
}
JanetSysOp opcode = namedata->op;
JanetSysOpVariant variant = op_variants[opcode];
JanetSysInstruction instruction;
instruction.opcode = opcode;
if (inside_call) {
if (opcode == JANET_SYSOP_CALL) {
inside_call = 0;
} else if (opcode != JANET_SYSOP_PUSH1 &&
opcode != JANET_SYSOP_PUSH2 &&
opcode != JANET_SYSOP_PUSH3) {
janet_panicf("push instructions may only be followed by other push instructions until a call, got %v",
x);
}
}
switch (variant) {
case JANET_SYSOPVAR_THREE:
instruction.line = line;
instruction.column = column;
switch (opcode) {
case JANET_SYSOP_CALLK:
case JANET_SYSOP_ARG:
janet_panicf("invalid instruction %v", x);
break;
case JANET_SYSOP_ADD:
case JANET_SYSOP_SUBTRACT:
case JANET_SYSOP_MULTIPLY:
case JANET_SYSOP_DIVIDE:
case JANET_SYSOP_BAND:
case JANET_SYSOP_BOR:
case JANET_SYSOP_BXOR:
case JANET_SYSOP_SHL:
case JANET_SYSOP_SHR:
case JANET_SYSOP_GT:
case JANET_SYSOP_GTE:
case JANET_SYSOP_LT:
case JANET_SYSOP_LTE:
case JANET_SYSOP_EQ:
case JANET_SYSOP_NEQ:
instr_assert_length(tuple, 4, opvalue);
instruction.three.dest = instr_read_operand(tuple[1], max_op);
instruction.three.lhs = instr_read_operand(tuple[2], max_op);
instruction.three.rhs = instr_read_operand(tuple[3], max_op);
instruction.three.dest = instr_read_operand(tuple[1], out);
instruction.three.lhs = instr_read_operand(tuple[2], out);
instruction.three.rhs = instr_read_operand(tuple[3], out);
ir[cursor++] = instruction;
break;
case JANET_SYSOPVAR_CALL:
/* TODO - fallthrough for now */
case JANET_SYSOPVAR_TWO:
case JANET_SYSOP_CALL:
instr_assert_min_length(tuple, 2, opvalue);
instruction.call.dest = instr_read_operand(tuple[1], out);
Janet c = tuple[2];
if (janet_checktype(c, JANET_SYMBOL)) {
Janet check = janet_table_get(constant_cache, c);
if (janet_checktype(check, JANET_NUMBER)) {
instruction.callk.constant = (uint32_t) janet_unwrap_number(check);
} else {
instruction.callk.constant = next_constant;
janet_table_put(constant_cache, c, janet_wrap_integer(next_constant));
next_constant++;
}
opcode = JANET_SYSOP_CALLK;
instruction.opcode = opcode;
} else {
instruction.call.callee = instr_read_operand(tuple[2], out);
}
instruction.call.arg_count = janet_tuple_length(tuple) - 2;
ir[cursor++] = instruction;
for (int32_t j = 3; j < janet_tuple_length(tuple); j += 3) {
JanetSysInstruction arginstr;
arginstr.opcode = JANET_SYSOP_ARG;
arginstr.line = line;
arginstr.column = column;
arginstr.arg.args[0] = 0;
arginstr.arg.args[1] = 0;
arginstr.arg.args[2] = 0;
int32_t remaining = janet_tuple_length(tuple) - j;
if (remaining > 3) remaining = 3;
for (int32_t k = 0; k < remaining; k++) {
arginstr.arg.args[k] = instr_read_operand(tuple[j + k], out);
}
ir[cursor++] = arginstr;
}
break;
case JANET_SYSOP_LOAD:
case JANET_SYSOP_STORE:
case JANET_SYSOP_MOVE:
case JANET_SYSOP_CAST:
case JANET_SYSOP_BNOT:
case JANET_SYSOP_ADDRESS:
instr_assert_length(tuple, 3, opvalue);
instruction.two.dest = instr_read_operand(tuple[1], max_op);
instruction.two.src = instr_read_operand(tuple[2], max_op);
instruction.two.dest = instr_read_operand(tuple[1], out);
instruction.two.src = instr_read_operand(tuple[2], out);
ir[cursor++] = instruction;
break;
case JANET_SYSOPVAR_ONE:
case JANET_SYSOP_RETURN:
instr_assert_length(tuple, 2, opvalue);
instruction.one.src = instr_read_operand(tuple[1], max_op);
instruction.one.src = instr_read_operand(tuple[1], out);
ir[cursor++] = instruction;
break;
case JANET_SYSOPVAR_BRANCH:
case JANET_SYSOP_BRANCH:
instr_assert_length(tuple, 3, opvalue);
instruction.branch.cond = instr_read_operand(tuple[1], max_op);
instruction.branch.to = instr_read_label(tuple[2], labels, max_label);
instruction.branch.cond = instr_read_operand(tuple[1], out);
instruction.branch.to = instr_read_label(tuple[2], labels);
ir[cursor++] = instruction;
break;
case JANET_SYSOPVAR_JUMP:
case JANET_SYSOP_JUMP:
instr_assert_length(tuple, 2, opvalue);
instruction.jump.to = instr_read_label(tuple[1], labels, max_label);
instruction.jump.to = instr_read_label(tuple[1], labels);
ir[cursor++] = instruction;
break;
case JANET_SYSOPVAR_CONSTANT: {
case JANET_SYSOP_CONSTANT: {
instr_assert_length(tuple, 3, opvalue);
instruction.constant.dest = instr_read_operand(tuple[1], max_op);
instruction.constant.dest = instr_read_operand(tuple[1], out);
Janet c = tuple[2];
Janet check = janet_table_get(constant_cache, c);
if (janet_checktype(check, JANET_NUMBER)) {
instruction.constant.constant = (uint32_t) janet_unwrap_number(check);
} else {
instruction.constant.constant = next_constant;
janet_table_put(constant_cache, c, janet_wrap_integer(next_constant));
janet_table_put(constant_cache, c, janet_wrap_number(next_constant));
next_constant++;
}
ir[cursor++] = instruction;
break;
}
case JANET_SYSOP_TYPE_PRIMITIVE: {
instr_assert_length(tuple, 3, opvalue);
instruction.type_prim.dest_type = instr_read_type_operand(tuple[1], out);
instruction.type_prim.prim = instr_read_prim(tuple[2]);
ir[cursor++] = instruction;
break;
}
case JANET_SYSOP_TYPE_STRUCT: {
instr_assert_length(tuple, 1, opvalue);
instruction.type_types.dest_type = instr_read_type_operand(tuple[1], out);
instruction.type_types.arg_count = janet_tuple_length(tuple) - 1;
ir[cursor++] = instruction;
for (int32_t j = 2; j < janet_tuple_length(tuple); j += 3) {
JanetSysInstruction arginstr;
arginstr.opcode = JANET_SYSOP_ARG;
arginstr.line = line;
arginstr.column = column;
arginstr.arg.args[0] = 0;
arginstr.arg.args[1] = 0;
arginstr.arg.args[2] = 0;
int32_t remaining = janet_tuple_length(tuple) - j;
if (remaining > 3) remaining = 3;
for (int32_t k = 0; k < remaining; k++) {
arginstr.arg.args[k] = instr_read_type_operand(tuple[j + k], out);
}
ir[cursor++] = arginstr;
}
ir[cursor++] = instruction;
break;
}
case JANET_SYSOP_TYPE_BIND: {
instr_assert_length(tuple, 3, opvalue);
instruction.type_bind.dest = instr_read_operand(tuple[1], out);
instruction.type_bind.type = instr_read_type_operand(tuple[2], out);
ir[cursor++] = instruction;
break;
}
}
check_instruction_well_formed(instruction, x, out);
instruction.line = line;
instruction.column = column;
ir[cursor++] = instruction;
}
/* Check last instruction is jump or return */
if ((ir[cursor - 1].opcode != JANET_SYSOP_JUMP) && (ir[cursor - 1].opcode != JANET_SYSOP_RETURN)) {
janet_panicf("last instruction must be jump or return, got %v", x);
}
/* Detect return type */
int found_return = 0;
for (uint32_t i = 0; i < pending_count; i++) {
JanetSysInstruction instruction = ir[i];
if (instruction.opcode == JANET_SYSOP_RETURN) {
JanetPrim ret_type = out->types[instruction.one.src];
if (found_return) {
if (out->return_type != ret_type) {
janet_panicf("multiple return types is not allowed: %s and %s", prim_names_by_id[ret_type], prim_names_by_id[out->return_type]);
}
} else {
out->return_type = ret_type;
}
found_return = 1;
}
}
ir = janet_realloc(ir, sizeof(JanetSysInstruction) * pending_count);
/* Fix up instructions table */
ir = janet_realloc(ir, sizeof(JanetSysInstruction) * cursor);
out->instructions = ir;
out->instruction_count = pending_count;
out->instruction_count = cursor;
/* Build constants */
out->constant_count = next_constant;
out->constants = janet_malloc(sizeof(Janet) * out->constant_count);
out->constants = next_constant ? janet_malloc(sizeof(Janet) * out->constant_count) : NULL;
for (int32_t i = 0; i < constant_cache->capacity; i++) {
JanetKV kv = constant_cache->data[i];
if (!janet_checktype(kv.key, JANET_NIL)) {
int32_t index = janet_unwrap_integer(kv.value);
uint32_t index = (uint32_t) janet_unwrap_number(kv.value);
out->constants[index] = kv.key;
}
}
}
/* TODO - check if constants are valid since they aren't convered in check_instruction_well_formed */
/* Build up type tables */
static void janet_sysir_init_types(JanetSysIR *sysir) {
if (sysir->type_def_count == 0) {
sysir->type_def_count++;
}
JanetSysTypeInfo *type_defs = janet_malloc(sizeof(JanetSysTypeInfo) * (sysir->type_def_count));
uint32_t *types = janet_malloc(sizeof(uint32_t) * sysir->register_count);
sysir->type_defs = type_defs;
sysir->types = types;
sysir->type_defs[0].field_count = 0;
sysir->type_defs[0].prim = JANET_PRIM_S32;
for (uint32_t i = 0; i < sysir->instruction_count; i++) {
sysir->types[i] = 0;
}
for (uint32_t i = 0; i < sysir->instruction_count; i++) {
JanetSysInstruction instruction = sysir->instructions[i];
switch (instruction.opcode) {
default:
break;
case JANET_SYSOP_TYPE_PRIMITIVE: {
uint32_t type_def = instruction.type_prim.dest_type;
type_defs[type_def].field_count = 0;
type_defs[type_def].prim = instruction.type_prim.prim;
break;
}
case JANET_SYSOP_TYPE_STRUCT: {
uint32_t type_def = instruction.type_types.dest_type;
type_defs[type_def].field_count = 0; /* TODO */
type_defs[type_def].prim = JANET_PRIM_POINTER; /* TODO */
break;
}
case JANET_SYSOP_TYPE_BIND: {
uint32_t type = instruction.type_bind.type;
uint32_t dest = instruction.type_bind.dest;
types[dest] = type;
break;
}
}
}
}
/* Type checking */
static void tcheck_boolean(JanetSysIR *sysir, uint32_t reg1) {
uint32_t t1 = sysir->types[reg1];
if (t1 != JANET_PRIM_BOOLEAN) {
janet_panicf("type failure, expected boolean, got type-id:%d", t1); /* TODO improve this */
}
}
static void tcheck_integer(JanetSysIR *sysir, uint32_t reg1) {
uint32_t t1 = sysir->types[reg1];
if (t1 != JANET_PRIM_S32 &&
t1 != JANET_PRIM_S64 &&
t1 != JANET_PRIM_S16 &&
t1 != JANET_PRIM_S8 &&
t1 != JANET_PRIM_U32 &&
t1 != JANET_PRIM_U64 &&
t1 != JANET_PRIM_U16 &&
t1 != JANET_PRIM_U8) {
janet_panicf("type failure, expected integer, got type-id:%d", t1); /* TODO improve this */
}
}
static void tcheck_pointer(JanetSysIR *sysir, uint32_t reg1) {
uint32_t t1 = sysir->types[reg1];
if (t1 != JANET_PRIM_POINTER) {
janet_panicf("type failure, expected pointer, got type-id:%d", t1);
}
}
static void tcheck_equal(JanetSysIR *sysir, uint32_t reg1, uint32_t reg2) {
uint32_t t1 = sysir->types[reg1];
uint32_t t2 = sysir->types[reg2];
if (t1 != t2) {
janet_panicf("type failure, type-id:%d does not match type-id:%d", t1, t2); /* TODO improve this */
}
}
static void janet_sysir_type_check(JanetSysIR *sysir) {
int found_return = 0;
for (uint32_t i = 0; i < sysir->instruction_count; i++) {
JanetSysInstruction instruction = sysir->instructions[i];
switch (instruction.opcode) {
case JANET_SYSOP_TYPE_PRIMITIVE:
case JANET_SYSOP_TYPE_STRUCT:
case JANET_SYSOP_TYPE_BIND:
case JANET_SYSOP_ARG:
case JANET_SYSOP_JUMP:
break;
case JANET_SYSOP_RETURN: {
uint32_t ret_type = sysir->types[instruction.one.src];
if (found_return) {
if (sysir->return_type != ret_type) {
janet_panicf("multiple return types are not allowed: type-id:%d and type-id:%d", ret_type, sysir->return_type);
}
} else {
sysir->return_type = ret_type;
}
found_return = 1;
break;
}
case JANET_SYSOP_MOVE:
tcheck_equal(sysir, instruction.two.dest, instruction.two.src);
break;
case JANET_SYSOP_CAST:
break;
case JANET_SYSOP_ADD:
case JANET_SYSOP_SUBTRACT:
case JANET_SYSOP_MULTIPLY:
case JANET_SYSOP_DIVIDE:
tcheck_equal(sysir, instruction.three.lhs, instruction.three.rhs);
tcheck_equal(sysir, instruction.three.dest, instruction.three.lhs);
break;
case JANET_SYSOP_BAND:
case JANET_SYSOP_BOR:
case JANET_SYSOP_BXOR:
tcheck_integer(sysir, instruction.three.lhs);
tcheck_equal(sysir, instruction.three.lhs, instruction.three.rhs);
tcheck_equal(sysir, instruction.three.dest, instruction.three.lhs);
break;
case JANET_SYSOP_BNOT:
tcheck_integer(sysir, instruction.two.src);
tcheck_equal(sysir, instruction.two.dest, instruction.two.src);
break;
case JANET_SYSOP_SHL:
case JANET_SYSOP_SHR:
tcheck_integer(sysir, instruction.three.lhs);
tcheck_equal(sysir, instruction.three.lhs, instruction.three.rhs);
tcheck_equal(sysir, instruction.three.dest, instruction.three.lhs);
break;
case JANET_SYSOP_LOAD:
tcheck_pointer(sysir, instruction.two.src);
break;
case JANET_SYSOP_STORE:
tcheck_pointer(sysir, instruction.two.dest);
break;
case JANET_SYSOP_GT:
case JANET_SYSOP_LT:
case JANET_SYSOP_EQ:
case JANET_SYSOP_NEQ:
case JANET_SYSOP_GTE:
case JANET_SYSOP_LTE:
tcheck_equal(sysir, instruction.three.lhs, instruction.three.rhs);
tcheck_equal(sysir, instruction.three.dest, instruction.three.lhs);
tcheck_boolean(sysir, instruction.three.dest);
break;
case JANET_SYSOP_ADDRESS:
tcheck_pointer(sysir, instruction.two.dest);
break;
case JANET_SYSOP_BRANCH:
tcheck_boolean(sysir, instruction.branch.cond);
break;
case JANET_SYSOP_CONSTANT:
/* TODO - check constant matches type */
break;
case JANET_SYSOP_CALL:
tcheck_pointer(sysir, instruction.call.callee);
break;
case JANET_SYSOP_CALLK:
/* TODO - check function return type */
break;
}
}
}
void janet_sys_ir_init_from_table(JanetSysIR *ir, JanetTable *table) {
ir->instructions = NULL;
ir->types = NULL;
ir->type_defs = NULL;
ir->constants = NULL;
ir->link_name = NULL;
ir->type_count = 0;
ir->register_count = 0;
ir->type_def_count = 0;
ir->constant_count = 0;
ir->return_type = JANET_PRIM_S32;
ir->return_type = 0;
ir->parameter_count = 0;
Janet assembly = janet_table_get(table, janet_ckeywordv("instructions"));
Janet types = janet_table_get(table, janet_ckeywordv("types"));
Janet param_count = janet_table_get(table, janet_ckeywordv("parameter-count"));
Janet link_namev = janet_table_get(table, janet_ckeywordv("link-name"));
JanetView asm_view = janet_getindexed(&assembly, 0);
JanetView type_view = janet_getindexed(&types, 0);
JanetString link_name = janet_getstring(&link_namev, 0);
int32_t parameter_count = janet_getnat(&param_count, 0);
ir->parameter_count = parameter_count;
ir->link_name = link_name;
janet_sysir_init_types(ir, type_view);
janet_sysir_init_instructions(ir, asm_view);
janet_sysir_init_types(ir);
janet_sysir_type_check(ir);
}
/* Lowering to C */
@@ -577,27 +707,78 @@ void janet_sys_ir_lower_to_c(JanetSysIR *ir, JanetBuffer *buffer) {
#define EMITBINOP(OP) \
janet_formatb(buffer, "_r%u = _r%u " OP " _r%u;\n", instruction.three.dest, instruction.three.lhs, instruction.three.rhs)
janet_formatb(buffer, "%s %s(", c_prim_names[ir->return_type], (ir->link_name != NULL) ? ir->link_name : janet_cstring("_thunk"));
janet_formatb(buffer, "#include <stdint.h>\n\n");
/* Emit type defs */
for (uint32_t i = 0; i < ir->instruction_count; i++) {
JanetSysInstruction instruction = ir->instructions[i];
switch (instruction.opcode) {
default:
continue;
case JANET_SYSOP_TYPE_PRIMITIVE:
case JANET_SYSOP_TYPE_STRUCT:
break;
}
if (instruction.line > 0) {
janet_formatb(buffer, "#line %d\n", instruction.line);
}
switch (instruction.opcode) {
default:
break;
case JANET_SYSOP_TYPE_PRIMITIVE:
janet_formatb(buffer, "typedef %s _t%u;\n", c_prim_names[instruction.type_prim.prim], instruction.type_prim.dest_type);
break;
case JANET_SYSOP_TYPE_STRUCT:
janet_formatb(buffer, "typedef struct {\n");
for (uint32_t j = 0; j < instruction.type_types.arg_count; j++) {
uint32_t offset = j / 3 + 1;
uint32_t index = j % 3;
JanetSysInstruction arg_instruction = ir->instructions[i + offset];
janet_formatb(buffer, " _t%u _f%u;\n", arg_instruction.arg.args[index], j);
}
janet_formatb(buffer, "} _t%u;\n", instruction.type_types.dest_type);
break;
}
}
/* Emit header */
janet_formatb(buffer, "_t%u %s(", ir->return_type, (ir->link_name != NULL) ? ir->link_name : janet_cstring("_thunk"));
for (uint32_t i = 0; i < ir->parameter_count; i++) {
if (i) janet_buffer_push_cstring(buffer, ", ");
janet_formatb(buffer, "%s _r%u", c_prim_names[ir->types[i]], i);
janet_formatb(buffer, "_t%u _r%u", ir->types[i], i);
}
janet_buffer_push_cstring(buffer, ")\n{\n");
for (uint32_t i = ir->parameter_count; i < ir->type_count; i++) {
janet_formatb(buffer, " %s _r%u;\n", c_prim_names[ir->types[i]], i);
for (uint32_t i = ir->parameter_count; i < ir->register_count; i++) {
janet_formatb(buffer, " _t%u _r%u;\n", ir->types[i], i);
}
janet_buffer_push_cstring(buffer, "\n");
JanetBuffer *call_buffer = janet_buffer(0);
/* Emit body */
for (uint32_t i = 0; i < ir->instruction_count; i++) {
janet_formatb(buffer, "_i%u:\n ", i);
JanetSysInstruction instruction = ir->instructions[i];
/* Skip instruction label for some opcodes */
switch (instruction.opcode) {
case JANET_SYSOP_TYPE_PRIMITIVE:
case JANET_SYSOP_TYPE_BIND:
case JANET_SYSOP_TYPE_STRUCT:
case JANET_SYSOP_ARG:
continue;
default:
break;
}
janet_formatb(buffer, "_i%u:\n ", i);
if (instruction.line > 0) {
janet_formatb(buffer, "#line %d\n ", instruction.line);
}
switch (instruction.opcode) {
case JANET_SYSOP_TYPE_PRIMITIVE:
case JANET_SYSOP_TYPE_BIND:
case JANET_SYSOP_TYPE_STRUCT:
case JANET_SYSOP_ARG:
break;
case JANET_SYSOP_CONSTANT: {
const char *cast = c_prim_names[ir->types[instruction.two.dest]];
janet_formatb(buffer, "_r%u = (%s) %j;\n", instruction.two.dest, cast, ir->constants[instruction.two.src]);
uint32_t cast = ir->types[instruction.two.dest];
janet_formatb(buffer, "_r%u = (_t%u) %j;\n", instruction.two.dest, cast, ir->constants[instruction.two.src]);
break;
}
case JANET_SYSOP_ADDRESS:
@@ -657,21 +838,28 @@ void janet_sys_ir_lower_to_c(JanetSysIR *ir, JanetBuffer *buffer) {
case JANET_SYSOP_SHR:
EMITBINOP(">>");
break;
case JANET_SYSOP_PUSH1:
janet_formatb(call_buffer, "%s_r%u", call_buffer->count ? ", " : "", instruction.one.src);
janet_buffer_push_cstring(buffer, "/* push1 */\n");
break;
case JANET_SYSOP_PUSH2:
janet_formatb(call_buffer, "%s_r%u, _r%u", call_buffer->count ? ", " : "", instruction.two.dest, instruction.two.src);
janet_buffer_push_cstring(buffer, "/* push2 */\n");
break;
case JANET_SYSOP_PUSH3:
janet_formatb(call_buffer, "%s_r%u, _r%u, _r%u", call_buffer->count ? ", " : "", instruction.three.dest, instruction.three.lhs, instruction.three.rhs);
janet_buffer_push_cstring(buffer, "/* push3 */\n");
break;
case JANET_SYSOP_CALL:
janet_formatb(buffer, "_r%u = _r%u(%s);\n", instruction.call.dest, instruction.call.callee, call_buffer->data);
call_buffer->count = 0;
janet_formatb(buffer, "_r%u = _r%u(", instruction.call.dest, instruction.call.callee);
for (uint32_t j = 0; j < instruction.call.arg_count; j++) {
uint32_t offset = j / 3 + 1;
uint32_t index = j % 3;
JanetSysInstruction arg_instruction = ir->instructions[i + offset];
janet_formatb(buffer, j ? ", _r%u" : "_r%u", arg_instruction.arg.args[index]);
}
janet_formatb(buffer, ");\n");
break;
case JANET_SYSOP_CALLK:
janet_formatb(buffer, "_r%u = %j(", instruction.callk.dest, instruction.callk.constant);
for (uint32_t j = 0; j < instruction.callk.arg_count; j++) {
uint32_t offset = j / 3 + 1;
uint32_t index = j % 3;
JanetSysInstruction arg_instruction = ir->instructions[i + offset];
janet_formatb(buffer, j ? ", _r%u" : "_r%u", arg_instruction.arg.args[index]);
}
janet_formatb(buffer, ");\n");
break;
case JANET_SYSOP_CAST:
janet_formatb(buffer, "_r%u = _r%u;\n", instruction.two.dest, instruction.two.src);
break;
case JANET_SYSOP_MOVE:
janet_formatb(buffer, "_r%u = _r%u;\n", instruction.two.dest, instruction.two.src);