mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-10 23:32:09 +00:00
f18837f195
I always suspected the overflow conversions were UB, but with gcc doing different things on arm, I thought it was about time to abandon those particular tests. What I was not expecting was for the return value of strcmp to be "UB" (in that there's no guarantee of the exact value, just < = > 0). Fortunately, nothing actually relies on the value of the op other than the tests, so modify the test to make the behavior well defined.
254 lines
6.5 KiB
C
254 lines
6.5 KiB
C
#include <setjmp.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "QF/va.h"
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#include "QF/simd/types.h"
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#define num_tests (sizeof (tests) / sizeof (tests[0]))
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static int test_enabled[num_tests] = { 0 };
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#include "getopt.h"
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#include "QF/cmd.h"
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#include "QF/cvar.h"
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static bfunction_t test_functions[] = {
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{}, // null function
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{ .first_statement = 0 }
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};
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static dprograms_t test_progs = {
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.version = PROG_VERSION,
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};
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static progs_t test_pr;
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static jmp_buf jump_buffer;
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static void
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test_debug_handler (prdebug_t event, void *param, void *data)
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{
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progs_t *pr = data;
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switch (event) {
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case prd_breakpoint:
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if (verbose > 0) {
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printf ("debug: %s\n", prdebug_names[event]);
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}
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longjmp (jump_buffer, 1);
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case prd_subenter:
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if (verbose > 0) {
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printf ("debug: subenter %d\n", *(pr_func_t *) param);
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}
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case prd_subexit:
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break;
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case prd_trace:
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dstatement_t *st = test_pr.pr_statements + test_pr.pr_xstatement;
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if (verbose > 1) {
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printf ("---\n");
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printf ("debug: trace %05x %04x %04x %04x %04x%s\n",
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test_pr.pr_xstatement, st->op, st->a, st->b, st->c,
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pr->globals.stack ? va (0, " %05x", *pr->globals.stack)
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: "");
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printf (" %04x %04x %04x\n",
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st->a + PR_BASE (pr, st, A),
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st->b + PR_BASE (pr, st, B),
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st->c + PR_BASE (pr, st, C));
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}
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if (verbose > 0) {
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PR_PrintStatement (&test_pr, st, 0);
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}
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if (pr->globals.stack) {
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if (*pr->globals.stack & 3) {
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printf ("stack not aligned: %d\n", *pr->globals.stack);
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longjmp (jump_buffer, 3);
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}
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}
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break;
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case prd_runerror:
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printf ("debug: %s: %s\n", prdebug_names[event], (char *)param);
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longjmp (jump_buffer, 3);
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case prd_watchpoint:
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case prd_begin:
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case prd_terminate:
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case prd_error:
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case prd_none:
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printf ("debug: unexpected:%s %p\n", prdebug_names[event], param);
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longjmp (jump_buffer, 2);
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}
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}
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static void
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setup_test (test_t *test)
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{
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memset (&test_pr, 0, sizeof (test_pr));
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PR_Init (&test_pr);
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PR_Debug_Init (&test_pr);
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test_pr.progs = &test_progs;
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test_pr.debug_handler = test_debug_handler;
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test_pr.debug_data = &test_pr;
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test_pr.pr_trace = 1;
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test_pr.pr_trace_depth = -1;
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if (test->num_functions && test->functions) {
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test_pr.function_table = calloc ((test->num_functions + 2),
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sizeof (bfunction_t));
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memcpy (test_pr.function_table, test_functions,
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2 * sizeof (bfunction_t));
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memcpy (test_pr.function_table + 2, test->functions,
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test->num_functions * sizeof (bfunction_t));
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} else {
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test_pr.function_table = test_functions;
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}
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pr_uint_t num_globals = test->num_globals;
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num_globals += test->extra_globals + test->stack_size;
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test_pr.globals_size = num_globals;
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test_pr.pr_globals = Sys_Alloc (num_globals * sizeof (pr_type_t));
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memcpy (test_pr.pr_globals, test->init_globals,
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test->num_globals * sizeof (pr_type_t));
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memset (test_pr.pr_globals + test->num_globals, 0,
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test->extra_globals * sizeof (pr_type_t));
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if (test->stack_size) {
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pr_ptr_t stack = num_globals - test->stack_size;
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test_pr.stack_bottom = stack + 4;
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test_pr.globals.stack = (pr_ptr_t *) (test_pr.pr_globals + stack);
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*test_pr.globals.stack = num_globals;
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}
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if (test->edict_area) {
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test_pr.pr_edict_area = test_pr.pr_globals + test->edict_area;
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}
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if (test->double_time || test->float_time) {
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test_pr.fields.nextthink = test->nextthink;
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test_pr.fields.frame = test->frame;
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test_pr.fields.think = test->think;
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test_pr.globals.self = (pr_uint_t *) &test_pr.pr_globals[test->self];
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if (test->double_time) {
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test_pr.globals.dtime = (double *)&test_pr.pr_globals[test->dtime];
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*test_pr.globals.dtime = *test->double_time;
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}
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if (test->float_time) {
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test_pr.globals.ftime = (float *) &test_pr.pr_globals[test->ftime];
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*test_pr.globals.ftime = *test->float_time;
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}
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}
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test_progs.statements.count = test->num_statements + 1;
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test_pr.pr_statements
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= malloc ((test->num_statements + 1) * sizeof (dstatement_t));
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memcpy (test_pr.pr_statements, test->statements,
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(test->num_statements + 1) * sizeof (dstatement_t));
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test_pr.pr_statements[test->num_statements] =
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(dstatement_t) { OP_BREAK, 0, 0, 0 };
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test_pr.pr_strings = (char *) test->strings;
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test_pr.pr_stringsize = test->string_size;
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}
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static int
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check_result (test_t *test)
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{
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int ret = 0;
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if (memcmp (test_pr.pr_globals, test->expect_globals,
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test->num_globals * sizeof (pr_int_t)) == 0) {
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ret = 1;
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printf ("test #%zd: %s: OK\n", test - tests, test->desc);
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} else {
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printf ("test #%zd: %s: words differ\n", test - tests, test->desc);
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for (pr_uint_t i = 0; i < test->num_globals; i += 4) {
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pr_ivec4_t *a = (pr_ivec4_t *) &test->expect_globals[i];
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pr_ivec4_t *b = (pr_ivec4_t *) &test_pr.pr_globals[i];
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if (memcmp (a, b, sizeof (pr_ivec4_t))) {
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printf ("-%4x { %8x, %8x, %8x, %8x }\n", i, VEC4_EXP (*a));
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printf ("+%4x { %8x, %8x, %8x, %8x }\n", i, VEC4_EXP (*b));
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}
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}
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}
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return ret;
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}
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static int
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run_test (test_t *test)
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{
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int jump_ret;
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int ret = 0;
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setup_test (test);
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if (!(jump_ret = setjmp (jump_buffer))) {
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PR_ExecuteProgram (&test_pr, 1);
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printf ("returned from progs\n");
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}
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if (jump_ret == 1) {
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ret = check_result (test);
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} else {
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printf ("test #%zd: %s: critical failure\n", test - tests, test->desc);
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}
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pr_uint_t num_globals = test->num_globals;
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num_globals += test->extra_globals + test->stack_size;
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if (test->num_functions && test->functions) {
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free (test_pr.function_table);
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}
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Sys_Free (test_pr.pr_globals, num_globals * sizeof (pr_type_t));
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free (test_pr.pr_statements);
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return ret;
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}
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int
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main (int argc, char **argv)
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{
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int c;
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size_t i, test;
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int pass = 1;
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Cmd_Init_Hash ();
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Cvar_Init_Hash ();
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Cmd_Init ();
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Cvar_Init ();
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PR_Init_Cvars ();
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pr_boundscheck = 1;
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while ((c = getopt (argc, argv, "qvt:")) != EOF) {
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switch (c) {
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case 'q':
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verbose--;
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break;
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case 'v':
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verbose++;
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break;
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case 't':
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test = atoi (optarg);
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if (test < num_tests) {
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test_enabled[test] = 1;
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} else {
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fprintf (stderr, "Bad test number (0 - %zd)\n", num_tests);
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return 1;
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}
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break;
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default:
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fprintf (stderr, "-q (quiet) -v (verbose) and/or -t TEST "
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"(test number)\n");
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return 1;
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}
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}
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for (i = 0; i < num_tests; i++)
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if (test_enabled[i])
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break;
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if (i == num_tests) {
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for (i = 0; i < num_tests; i++)
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test_enabled[i] = 1;
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}
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for (i = 0; i < num_tests; i++) {
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if (!test_enabled[i])
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continue;
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pass &= run_test (&tests[i]);
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}
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return !pass;
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}
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