+#include <errno.h>
+#include <string.h>
+#include <stdarg.h>
+
#include "gmqcc.h"
-#define QCVM_EXECUTOR
+MEM_VEC_FUNCTIONS(qc_program, prog_section_statement, code)
+MEM_VEC_FUNCTIONS(qc_program, prog_section_def, defs)
+MEM_VEC_FUNCTIONS(qc_program, prog_section_def, fields)
+MEM_VEC_FUNCTIONS(qc_program, prog_section_function, functions)
+MEM_VEC_FUNCTIONS(qc_program, char, strings)
+MEM_VEC_FUN_APPEND(qc_program, char, strings)
+MEM_VEC_FUN_RESIZE(qc_program, char, strings)
+MEM_VEC_FUNCTIONS(qc_program, qcint, globals)
+MEM_VEC_FUNCTIONS(qc_program, qcint, entitydata)
+MEM_VEC_FUNCTIONS(qc_program, bool, entitypool)
-/* darkplaces has (or will have) a 64 bit prog loader
- * where the 32 bit qc program is autoconverted on load.
- * Since we may want to support that as well, let's redefine
- * float and int here.
- */
-typedef float qcfloat;
-typedef int32_t qcint;
-
-typedef char qcfloat_size_is_correct [sizeof(qcfloat) == 4 ?1:-1];
-typedef char qcint_size_is_correct [sizeof(int) == 4 ?1:-1];
-
-typedef struct {
- uint32_t offset;
- uint32_t length;
-} prog_section;
-
-typedef struct {
- uint32_t version;
- uint16_t crc16;
- uint16_t skip;
-
- prog_section statements;
- prog_section defs;
- prog_section fields;
- prog_section functions;
- prog_section strings;
- prog_section globals;
- uint32_t entfield;
-} prog_header;
-
-typedef prog_section_both prog_def;
-typedef prog_section_function prog_function;
-typedef prog_section_statement prog_statement;
-
-typedef struct {
- char *filename;
-
- prog_statement *code;
- prog_def *defs;
- prog_def *fields;
- prog_function *functions;
- char *strings;
- qcint *globals;
- qcint *entitydata;
-} qc_program;
+MEM_VEC_FUNCTIONS(qc_program, qcint, localstack)
+MEM_VEC_FUN_APPEND(qc_program, qcint, localstack)
+MEM_VEC_FUN_RESIZE(qc_program, qcint, localstack)
+MEM_VEC_FUNCTIONS(qc_program, qc_exec_stack, stack)
+
+MEM_VEC_FUNCTIONS(qc_program, size_t, profile)
+MEM_VEC_FUN_RESIZE(qc_program, size_t, profile)
+
+MEM_VEC_FUNCTIONS(qc_program, prog_builtin, builtins)
+
+static void loaderror(const char *fmt, ...)
+{
+ int err = errno;
+ va_list ap;
+ va_start(ap, fmt);
+ vprintf(fmt, ap);
+ va_end(ap);
+ printf(": %s\n", strerror(err));
+}
+
+static void printvmerr(const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ vprintf(fmt, ap);
+ va_end(ap);
+ putchar('\n');
+}
qc_program* prog_load(const char *filename)
{
qc_program *prog;
prog_header header;
+ size_t i;
FILE *file;
file = fopen(filename, "rb");
return NULL;
if (fread(&header, sizeof(header), 1, file) != 1) {
- perror("read");
+ loaderror("failed to read header from '%s'", filename);
fclose(file);
return NULL;
}
if (header.version != 6) {
- printf("header says this is a version %i progs, we need version 6\n",
- header.version);
+ loaderror("header says this is a version %i progs, we need version 6\n", header.version);
fclose(file);
return NULL;
}
}
memset(prog, 0, sizeof(*prog));
+ prog->entityfields = header.entfield;
+
prog->filename = util_strdup(filename);
- if (!prog->filename)
+ if (!prog->filename) {
+ loaderror("failed to store program name");
goto error;
+ }
+
#define read_data(hdrvar, progvar, type) \
if (fseek(file, header.hdrvar.offset, SEEK_SET) != 0) { \
- perror("fseek"); \
+ loaderror("seek failed"); \
goto error; \
} \
+ prog->progvar##_alloc = header.hdrvar.length; \
+ prog->progvar##_count = header.hdrvar.length; \
prog->progvar = (type*)mem_a(header.hdrvar.length * sizeof(*prog->progvar)); \
if (!prog->progvar) \
goto error; \
if (fread(prog->progvar, sizeof(*prog->progvar), header.hdrvar.length, file) \
!= header.hdrvar.length) { \
- perror("read"); \
+ loaderror("read failed"); \
goto error; \
}
#define read_data1(x, y) read_data(x, x, y)
- read_data (statements, code, prog_statement);
- read_data1(defs, prog_def);
- read_data1(fields, prog_def);
- read_data1(functions, prog_function);
+ read_data (statements, code, prog_section_statement);
+ read_data1(defs, prog_section_def);
+ read_data1(fields, prog_section_def);
+ read_data1(functions, prog_section_function);
read_data1(strings, char);
read_data1(globals, qcint);
fclose(file);
+ /* profile counters */
+ if (!qc_program_profile_resize(prog, prog->code_count))
+ goto error;
+
+ /* Add tempstring area */
+ prog->tempstring_start = prog->strings_count;
+ prog->tempstring_at = prog->strings_count;
+ if (!qc_program_strings_resize(prog, prog->strings_count + 16*1024))
+ goto error;
+
+ /* spawn the world entity */
+ if (!qc_program_entitypool_add(prog, true)) {
+ loaderror("failed to allocate world entity\n");
+ goto error;
+ }
+ for (i = 0; i < prog->entityfields; ++i) {
+ if (!qc_program_entitydata_add(prog, 0)) {
+ loaderror("failed to allocate world data\n");
+ goto error;
+ }
+ }
+ prog->entities = 1;
+
return prog;
error:
if (prog->strings) mem_d(prog->strings);
if (prog->globals) mem_d(prog->globals);
if (prog->entitydata) mem_d(prog->entitydata);
+ if (prog->entitypool) mem_d(prog->entitypool);
mem_d(prog);
return NULL;
}
void prog_delete(qc_program *prog)
{
- if (prog->filename) mem_d(prog->filename);
- if (prog->code) mem_d(prog->code);
- if (prog->defs) mem_d(prog->defs);
- if (prog->fields) mem_d(prog->fields);
- if (prog->functions) mem_d(prog->functions);
- if (prog->strings) mem_d(prog->strings);
- if (prog->globals) mem_d(prog->globals);
- if (prog->entitydata) mem_d(prog->entitydata);
+ if (prog->filename) mem_d(prog->filename);
+ MEM_VECTOR_CLEAR(prog, code);
+ MEM_VECTOR_CLEAR(prog, defs);
+ MEM_VECTOR_CLEAR(prog, fields);
+ MEM_VECTOR_CLEAR(prog, functions);
+ MEM_VECTOR_CLEAR(prog, strings);
+ MEM_VECTOR_CLEAR(prog, globals);
+ MEM_VECTOR_CLEAR(prog, entitydata);
+ MEM_VECTOR_CLEAR(prog, entitypool);
+ MEM_VECTOR_CLEAR(prog, localstack);
+ MEM_VECTOR_CLEAR(prog, stack);
+ MEM_VECTOR_CLEAR(prog, profile);
+
+ if (prog->builtins_alloc) {
+ MEM_VECTOR_CLEAR(prog, builtins);
+ }
+ /* otherwise the builtins were statically allocated */
mem_d(prog);
}
+/***********************************************************************
+ * VM code
+ */
+
+char* prog_getstring(qc_program *prog, qcint str)
+{
+ if (str < 0 || str >= prog->strings_count)
+ return "<<<invalid string>>>";
+ return prog->strings + str;
+}
+
+prog_section_def* prog_entfield(qc_program *prog, qcint off)
+{
+ size_t i;
+ for (i = 0; i < prog->fields_count; ++i) {
+ if (prog->fields[i].offset == off)
+ return (prog->fields + i);
+ }
+ return NULL;
+}
+
+prog_section_def* prog_getdef(qc_program *prog, qcint off)
+{
+ size_t i;
+ for (i = 0; i < prog->defs_count; ++i) {
+ if (prog->defs[i].offset == off)
+ return (prog->defs + i);
+ }
+ return NULL;
+}
+
+qcany* prog_getedict(qc_program *prog, qcint e)
+{
+ if (e >= prog->entitypool_count) {
+ prog->vmerror++;
+ printf("Accessing out of bounds edict %i\n", (int)e);
+ e = 0;
+ }
+ return (qcany*)(prog->entitydata + (prog->entityfields * e));
+}
+
+qcint prog_spawn_entity(qc_program *prog)
+{
+ size_t i;
+ qcint e;
+ for (e = 0; e < (qcint)prog->entitypool_count; ++e) {
+ if (!prog->entitypool[e]) {
+ char *data = (char*)(prog->entitydata + (prog->entityfields * e));
+ memset(data, 0, prog->entityfields * sizeof(qcint));
+ return e;
+ }
+ }
+ if (!qc_program_entitypool_add(prog, true)) {
+ prog->vmerror++;
+ printf("Failed to allocate entity\n");
+ return 0;
+ }
+ prog->entities++;
+ for (i = 0; i < prog->entityfields; ++i) {
+ if (!qc_program_entitydata_add(prog, 0)) {
+ printf("Failed to allocate entity\n");
+ return 0;
+ }
+ }
+ return e;
+}
+
+void prog_free_entity(qc_program *prog, qcint e)
+{
+ if (!e) {
+ prog->vmerror++;
+ printf("Trying to free world entity\n");
+ return;
+ }
+ if (e >= prog->entitypool_count) {
+ prog->vmerror++;
+ printf("Trying to free out of bounds entity\n");
+ return;
+ }
+ if (!prog->entitypool[e]) {
+ prog->vmerror++;
+ printf("Double free on entity\n");
+ return;
+ }
+ prog->entitypool[e] = false;
+}
+
+qcint prog_tempstring(qc_program *prog, const char *_str)
+{
+ /* we don't access it, but the macro-generated functions don't use
+ * const
+ */
+ char *str = (char*)_str;
+
+ size_t len = strlen(str);
+ size_t at = prog->tempstring_at;
+
+ /* when we reach the end we start over */
+ if (at + len >= prog->strings_count)
+ at = prog->tempstring_start;
+
+ /* when it doesn't fit, reallocate */
+ if (at + len >= prog->strings_count)
+ {
+ prog->strings_count = at;
+ if (!qc_program_strings_append(prog, str, len+1)) {
+ prog->vmerror = VMERR_TEMPSTRING_ALLOC;
+ return 0;
+ }
+ return at;
+ }
+
+ /* when it fits, just copy */
+ memcpy(prog->strings + at, str, len+1);
+ prog->tempstring_at += len+1;
+ return at;
+}
+
+static int print_escaped_string(const char *str)
+{
+ int len = 2;
+ putchar('"');
+ while (*str) {
+ switch (*str) {
+ case '\a': len += 2; putchar('\\'); putchar('a'); break;
+ case '\b': len += 2; putchar('\\'); putchar('b'); break;
+ case '\r': len += 2; putchar('\\'); putchar('r'); break;
+ case '\n': len += 2; putchar('\\'); putchar('n'); break;
+ case '\t': len += 2; putchar('\\'); putchar('t'); break;
+ case '\f': len += 2; putchar('\\'); putchar('f'); break;
+ case '\v': len += 2; putchar('\\'); putchar('v'); break;
+ case '\\': len += 2; putchar('\\'); putchar('\\'); break;
+ case '"': len += 2; putchar('\\'); putchar('"'); break;
+ default:
+ ++len;
+ putchar(*str);
+ break;
+ }
+ ++str;
+ }
+ putchar('"');
+ return len;
+}
+
+static void trace_print_global(qc_program *prog, unsigned int glob, int vtype)
+{
+ static char spaces[16+1] = " ";
+ prog_section_def *def;
+ qcany *value;
+ int len;
+
+ if (!glob)
+ return;
+
+ def = prog_getdef(prog, glob);
+ value = (qcany*)(&prog->globals[glob]);
+
+ if (def) {
+ len = printf("[%s] ", prog_getstring(prog, def->name));
+ vtype = def->type;
+ }
+ else
+ len = printf("[@%u] ", glob);
+
+ switch (vtype) {
+ case TYPE_VOID:
+ case TYPE_ENTITY:
+ case TYPE_FIELD:
+ case TYPE_FUNCTION:
+ case TYPE_POINTER:
+ len += printf("%i,", value->_int);
+ break;
+ case TYPE_VECTOR:
+ len += printf("'%g %g %g',", value->vector[0],
+ value->vector[1],
+ value->vector[2]);
+ break;
+ case TYPE_STRING:
+ len += print_escaped_string(prog_getstring(prog, value->string));
+ /* len += printf("\"%s\",", prog_getstring(prog, value->string)); */
+ break;
+ case TYPE_FLOAT:
+ default:
+ len += printf("%g,", value->_float);
+ break;
+ }
+ if (len < 16) {
+ spaces[16-len] = 0;
+ printf(spaces);
+ spaces[16-len] = ' ';
+ }
+}
+
+static void prog_print_statement(qc_program *prog, prog_section_statement *st)
+{
+ if (st->opcode >= (sizeof(asm_instr)/sizeof(asm_instr[0]))) {
+ printf("<illegal instruction %d>\n", st->opcode);
+ return;
+ }
+ printf(" <> %-12s", asm_instr[st->opcode].m);
+ if (st->opcode >= INSTR_IF &&
+ st->opcode <= INSTR_IFNOT)
+ {
+ trace_print_global(prog, st->o1.u1, TYPE_FLOAT);
+ printf("%d\n", st->o2.s1);
+ }
+ else if (st->opcode >= INSTR_CALL0 &&
+ st->opcode <= INSTR_CALL8)
+ {
+ printf("\n");
+ }
+ else if (st->opcode == INSTR_GOTO)
+ {
+ printf("%i\n", st->o1.s1);
+ }
+ else
+ {
+ int t[3] = { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT };
+ switch (st->opcode)
+ {
+ case INSTR_MUL_FV:
+ t[1] = t[2] = TYPE_VECTOR;
+ break;
+ case INSTR_MUL_VF:
+ t[0] = t[2] = TYPE_VECTOR;
+ break;
+ case INSTR_MUL_V:
+ t[0] = t[1] = TYPE_VECTOR;
+ break;
+ case INSTR_ADD_V:
+ case INSTR_SUB_V:
+ case INSTR_EQ_V:
+ case INSTR_NE_V:
+ t[0] = t[1] = t[2] = TYPE_VECTOR;
+ break;
+ case INSTR_EQ_S:
+ case INSTR_NE_S:
+ t[0] = t[1] = TYPE_STRING;
+ break;
+ case INSTR_STORE_V:
+ t[0] = t[1] = TYPE_VECTOR; t[2] = -1;
+ break;
+ case INSTR_STORE_S:
+ t[0] = t[1] = TYPE_STRING; t[2] = -1;
+ break;
+ }
+ if (t[0] >= 0) trace_print_global(prog, st->o1.u1, t[0]);
+ if (t[1] >= 0) trace_print_global(prog, st->o2.u1, t[1]);
+ if (t[2] >= 0) trace_print_global(prog, st->o3.u1, t[2]);
+ printf("\n");
+ }
+}
+
+static qcint prog_enterfunction(qc_program *prog, prog_section_function *func)
+{
+ qc_exec_stack st;
+ size_t p, parampos;
+
+ /* back up locals */
+ st.localsp = prog->localstack_count;
+ st.stmt = prog->statement;
+ st.function = func;
+
+#ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
+ if (prog->stack_count)
+ {
+ prog_section_function *cur;
+ cur = prog->stack[prog->stack_count-1].function;
+ if (cur)
+ {
+ qcint *globals = prog->globals + cur->firstlocal;
+ if (!qc_program_localstack_append(prog, globals, cur->locals))
+ {
+ printf("out of memory\n");
+ exit(1);
+ }
+ }
+ }
+#else
+ {
+ qcint *globals = prog->globals + func->firstlocal;
+ if (!qc_program_localstack_append(prog, globals, func->locals))
+ {
+ printf("out of memory\n");
+ exit(1);
+ }
+ }
+#endif
+
+ /* copy parameters */
+ parampos = func->firstlocal;
+ for (p = 0; p < func->nargs; ++p)
+ {
+ size_t s;
+ for (s = 0; s < func->argsize[p]; ++s) {
+ prog->globals[parampos] = prog->globals[OFS_PARM0 + 3*p + s];
+ ++parampos;
+ }
+ }
+
+ if (!qc_program_stack_add(prog, st)) {
+ printf("out of memory\n");
+ exit(1);
+ }
+
+ return func->entry;
+}
+
+static qcint prog_leavefunction(qc_program *prog)
+{
+ prog_section_function *prev = NULL;
+ size_t oldsp;
+
+ qc_exec_stack st = prog->stack[prog->stack_count-1];
+
+#ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
+ if (prog->stack_count > 1) {
+ prev = prog->stack[prog->stack_count-2].function;
+ oldsp = prog->stack[prog->stack_count-2].localsp;
+ }
+#else
+ prev = prog->stack[prog->stack_count-1].function;
+ oldsp = prog->stack[prog->stack_count-1].localsp;
+#endif
+ if (prev) {
+ qcint *globals = prog->globals + prev->firstlocal;
+ memcpy(globals, prog->localstack + oldsp, prev->locals);
+ if (!qc_program_localstack_resize(prog, oldsp)) {
+ printf("out of memory\n");
+ exit(1);
+ }
+ }
+
+ if (!qc_program_stack_remove(prog, prog->stack_count-1)) {
+ printf("out of memory\n");
+ exit(1);
+ }
+
+ return st.stmt;
+}
+
+bool prog_exec(qc_program *prog, prog_section_function *func, size_t flags, long maxjumps)
+{
+ long jumpcount = 0;
+ prog_section_statement *st;
+
+ prog->vmerror = 0;
+
+ st = prog->code + prog_enterfunction(prog, func);
+ --st;
+ switch (flags)
+ {
+ default:
+ case 0:
+ {
+#define QCVM_PROFILE 0
+#define QCVM_TRACE 0
+# include "execloop.h"
+ break;
+ }
+ case (VMXF_TRACE):
+ {
+#define QCVM_PROFILE 0
+#define QCVM_TRACE 1
+# include "execloop.h"
+ break;
+ }
+ case (VMXF_PROFILE):
+ {
+#define QCVM_PROFILE 1
+#define QCVM_TRACE 0
+# include "execloop.h"
+ break;
+ }
+ case (VMXF_TRACE|VMXF_PROFILE):
+ {
+#define QCVM_PROFILE 1
+#define QCVM_TRACE 1
+# include "execloop.h"
+ break;
+ }
+ };
+
+cleanup:
+ prog->localstack_count = 0;
+ prog->stack_count = 0;
+ if (prog->vmerror)
+ return false;
+ return true;
+}
+
+/***********************************************************************
+ * main for when building the standalone executor
+ */
+
#if defined(QCVM_EXECUTOR)
+bool opts_debug = false;
+bool opts_memchk = false;
+
+#define CheckArgs(num) do { \
+ if (prog->argc != (num)) { \
+ prog->vmerror++; \
+ printf("ERROR: invalid number of arguments for %s: %i, expected %i\n", \
+ __FUNCTION__, prog->argc, (num)); \
+ return -1; \
+ } \
+} while (0)
+
+#define GetGlobal(idx) ((qcany*)(prog->globals + (idx)))
+#define GetArg(num) GetGlobal(OFS_PARM0 + 3*(num))
+#define Return(any) *(GetGlobal(OFS_RETURN)) = (any)
+
+static int qc_print(qc_program *prog)
+{
+ size_t i;
+ for (i = 0; i < prog->argc; ++i) {
+ qcany *str = (qcany*)(prog->globals + OFS_PARM0 + 3*i);
+ printf("%s", prog_getstring(prog, str->string));
+ }
+ return 0;
+}
+
+static int qc_ftos(qc_program *prog)
+{
+ char buffer[512];
+ qcany *num;
+ qcany str;
+ CheckArgs(1);
+ num = GetArg(0);
+ snprintf(buffer, sizeof(buffer), "%g", num->_float);
+ str.string = prog_tempstring(prog, buffer);
+ Return(str);
+ return 0;
+}
+
+static int qc_spawn(qc_program *prog)
+{
+ qcany ent;
+ CheckArgs(0);
+ ent.edict = prog_spawn_entity(prog);
+ Return(ent);
+ return (ent.edict ? 0 : -1);
+}
+
+static int qc_kill(qc_program *prog)
+{
+ qcany *ent;
+ CheckArgs(1);
+ ent = GetArg(0);
+ prog_free_entity(prog, ent->edict);
+ return 0;
+}
+
+static prog_builtin qc_builtins[] = {
+ NULL,
+ &qc_print,
+ &qc_ftos,
+ &qc_spawn,
+ &qc_kill
+};
+static size_t qc_builtins_count = sizeof(qc_builtins) / sizeof(qc_builtins[0]);
+
int main(int argc, char **argv)
{
+ size_t i;
+ qcint fnmain = -1;
qc_program *prog;
if (argc != 2) {
- printf("usage: %s prog.dat\n", argv[0]);
+ printf("usage: %s file\n", argv[0]);
exit(1);
}
exit(1);
}
+ prog->builtins = qc_builtins;
+ prog->builtins_count = qc_builtins_count;
+ prog->builtins_alloc = 0;
+
+ for (i = 1; i < prog->functions_count; ++i) {
+ const char *name = prog_getstring(prog, prog->functions[i].name);
+ printf("Found function: %s\n", name);
+ if (!strcmp(name, "main"))
+ fnmain = (qcint)i;
+ }
+ printf("Entity field space: %i\n", (int)prog->entityfields);
+ if (fnmain > 0)
+ {
+ prog_exec(prog, &prog->functions[fnmain], VMXF_TRACE, VM_JUMPS_DEFAULT);
+ }
+ else
+ printf("No main function found\n");
+
prog_delete(prog);
return 0;
}
projects / xonotic / gmqcc.git / blobdiff