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61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
#include "test.h"
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#define NTARGETS ((size_t) 4)
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static void
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run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
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{
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jit_begin(j, arena_base, arena_size);
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size_t align = jit_enter_jit_abi(j, 0, 0, 0);
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jit_load_args_1(j, jit_operand_gpr (JIT_OPERAND_ABI_POINTER, JIT_R0));
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jit_reloc_t default_target = jit_bgei_u(j, JIT_R0, NTARGETS);
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// FIXME: need ldxr with word stride, then can eliminate lshi.
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jit_lshi(j, JIT_R0, JIT_R0, sizeof(intptr_t) == 4 ? 2 : 3);
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jit_reloc_t table = jit_mov_addr(j, JIT_R1);
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jit_ldxr(j, JIT_R1, JIT_R1, JIT_R0);
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jit_jmpr(j, JIT_R1);
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jit_begin_data (j, (NTARGETS + 1) * sizeof(intptr_t));
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jit_align(j, sizeof(intptr_t));
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jit_patch_here(j, table);
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jit_reloc_t targets[NTARGETS];
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jit_reloc_t tails[NTARGETS];
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for (size_t i = 0; i < NTARGETS; i++) {
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targets[i] = jit_emit_addr(j);
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}
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jit_end_data (j);
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for (size_t i = 0; i < NTARGETS; i++) {
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jit_patch_here(j, targets[i]);
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jit_movi(j, JIT_R0, i * i);
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tails[i] = jit_jmp(j);
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}
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jit_patch_here(j, default_target);
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jit_movi(j, JIT_R0, 42);
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for (int i = 0; i < NTARGETS; i++) {
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jit_patch_here(j, tails[i]);
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}
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jit_leave_jit_abi(j, 0, 0, align);
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jit_retr(j, JIT_R0);
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jit_word_t (*f)(jit_word_t) = jit_end(j, NULL);
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for (int i = -2; i < ((int) NTARGETS) + 2; i++) {
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if (i < 0) {
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ASSERT(f(i) == 42);
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} else if (i < NTARGETS) {
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ASSERT(f(i) == i * i);
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} else {
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ASSERT(f(i) == 42);
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}
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}
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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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return main_helper(argc, argv, run_test);
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}
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