diff options
Diffstat (limited to 'libguile/jit.c')
-rw-r--r-- | libguile/jit.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libguile/jit.c b/libguile/jit.c index 136b8bcaf..f1c7a4941 100644 --- a/libguile/jit.c +++ b/libguile/jit.c @@ -2089,6 +2089,60 @@ compile_allocate_words_immediate (scm_jit_state *j, uint16_t dst, uint16_t nword } static void +compile_allocate_pointerless_words (scm_jit_state *j, uint16_t dst, uint16_t nwords) +{ + jit_gpr_t t = T0; + + emit_store_current_ip (j, t); + emit_call_2 (j, scm_vm_intrinsics.allocate_pointerless_words, thread_operand (), + sp_sz_operand (j, nwords)); + emit_retval (j, t); + record_gpr_clobber (j, t); + emit_reload_sp (j); + emit_sp_set_scm (j, dst, t); +} + +static void +compile_allocate_pointerless_words_immediate (scm_jit_state *j, uint16_t dst, uint16_t nwords) +{ + size_t bytes = nwords * sizeof(SCM); + size_t idx = scm_inline_gc_bytes_to_freelist_index (bytes); + + if (SCM_UNLIKELY (idx >= SCM_INLINE_GC_FREELIST_COUNT)) + { + jit_gpr_t t = T0; + emit_store_current_ip (j, t); + emit_call_1 (j, GC_malloc_atomic, jit_operand_imm (JIT_OPERAND_ABI_WORD, bytes)); + emit_retval (j, t); + emit_reload_sp (j); + emit_sp_set_scm (j, dst, t); + } + else + { + jit_gpr_t res = T0; + ptrdiff_t offset = offsetof(struct scm_thread, pointerless_freelists); + offset += idx * sizeof(void*); + emit_ldxi (j, res, THREAD, offset); + jit_reloc_t fast = jit_bnei (j->jit, res, 0); + emit_store_current_ip (j, res); + emit_call_2 (j, scm_vm_intrinsics.allocate_pointerless_words_with_freelist, + thread_operand (), + jit_operand_imm (JIT_OPERAND_ABI_WORD, idx)); + emit_retval (j, res); + emit_reload_sp (j); + jit_reloc_t done = jit_jmp (j->jit); + + jit_patch_here (j->jit, fast); + jit_gpr_t new_freelist = T1; + emit_ldr (j, new_freelist, res); + jit_stxi (j->jit, offset, THREAD, new_freelist); + + jit_patch_here (j->jit, done); + emit_sp_set_scm (j, dst, res); + } +} + +static void compile_scm_ref (scm_jit_state *j, uint8_t dst, uint8_t obj, uint8_t idx) { emit_sp_ref_scm (j, T0, obj); |