X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeabi.c;h=7c7a3014a597cfc2f37a6a45431ad97e284bafba;hb=27d286b697a2c00af4db8e29c9d14af4c48cac95;hp=206f994905ac3cb3402d9162839e3ce70e09d330;hpb=108669cd17f3824d0f61a2b9e480cd01ef4432eb;p=libfirm diff --git a/ir/be/beabi.c b/ir/be/beabi.c index 206f99490..7c7a3014a 100644 --- a/ir/be/beabi.c +++ b/ir/be/beabi.c @@ -8,7 +8,9 @@ #ifdef HAVE_CONFIG_H # include "config.h" #endif + #include "obst.h" +#include "offset.h" #include "type.h" #include "irgopt.h" @@ -40,6 +42,9 @@ typedef struct _be_abi_call_arg_t { int pos; const arch_register_t *reg; entity *stack_ent; + unsigned alignment; + unsigned space_before; + unsigned space_after; } be_abi_call_arg_t; struct _be_abi_call_t { @@ -96,10 +101,8 @@ struct _be_abi_irg_t { arch_irn_ops_t irn_ops; }; -#define abi_offset_of(type,member) ((char *) &(((type *) 0)->member) - (char *) 0) -#define abi_get_relative(ptr, member) ((void *) ((char *) (ptr) - abi_offset_of(be_abi_irg_t, member))) -#define get_abi_from_handler(ptr) abi_get_relative(ptr, irn_handler) -#define get_abi_from_ops(ptr) abi_get_relative(ptr, irn_ops) +#define get_abi_from_handler(ptr) firm_container_of(ptr, be_abi_irg_t, irn_handler) +#define get_abi_from_ops(ptr) firm_container_of(ptr, be_abi_irg_t, irn_ops) /* Forward, since be need it in be_abi_introduce(). */ static const arch_irn_ops_if_t abi_irn_ops; @@ -149,10 +152,14 @@ void be_abi_call_set_flags(be_abi_call_t *call, be_abi_call_flags_t flags, const call->cb = cb; } -void be_abi_call_param_stack(be_abi_call_t *call, int arg_pos) +void be_abi_call_param_stack(be_abi_call_t *call, int arg_pos, unsigned alignment, unsigned space_before, unsigned space_after) { be_abi_call_arg_t *arg = get_or_set_call_arg(call, 0, arg_pos, 1); - arg->on_stack = 1; + arg->on_stack = 1; + arg->alignment = alignment; + arg->space_before = space_before; + arg->space_after = space_after; + assert(alignment > 0 && "Alignment must be greater than 0"); } void be_abi_call_param_reg(be_abi_call_t *call, int arg_pos, const arch_register_t *reg) @@ -176,7 +183,7 @@ be_abi_call_flags_t be_abi_call_get_flags(const be_abi_call_t *call) be_abi_call_t *be_abi_call_new(void) { - be_abi_call_t *call = malloc(sizeof(call[0])); + be_abi_call_t *call = xmalloc(sizeof(call[0])); call->flags.val = 0; call->params = new_set(cmp_call_arg, 16); call->cb = NULL; @@ -371,6 +378,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) ir_mode *mach_mode = sp->reg_class->mode; struct obstack *obst = &env->obst; ir_node *no_mem = get_irg_no_mem(irg); + int no_alloc = call->flags.bits.frame_is_setup_on_call; ir_node *res_proj = NULL; int curr_res_proj = pn_Call_max; @@ -394,7 +402,10 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) be_abi_call_arg_t *arg = get_call_arg(call, 0, i); assert(arg); if(arg->on_stack) { + stack_size += arg->space_before; + stack_size = round_up2(stack_size, arg->alignment); stack_size += get_type_size_bytes(get_method_param_type(mt, i)); + stack_size += arg->space_after; obstack_int_grow(obst, i); n_pos++; } @@ -414,7 +425,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) /* If there are some parameters which shall be passed on the stack. */ if(n_pos > 0) { int curr_ofs = 0; - int do_seq = call->flags.bits.store_args_sequential; + int do_seq = call->flags.bits.store_args_sequential && !no_alloc; /* Reverse list of stack parameters if call arguments are from left to right */ if(call->flags.bits.left_to_right) { @@ -428,21 +439,26 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) /* * If the stack is decreasing and we do not want to store sequentially, + * or someone else allocated the call frame * we allocate as much space on the stack all parameters need, by * moving the stack pointer along the stack's direction. */ - if(stack_dir < 0 && !do_seq) { - curr_sp = be_new_IncSP(sp, irg, bl, curr_sp, no_mem, stack_size, be_stack_dir_along); + if(stack_dir < 0 && !do_seq && !no_alloc) { + curr_sp = be_new_IncSP(sp, irg, bl, curr_sp, no_mem, stack_size, be_stack_dir_expand); } assert(mode_is_reference(mach_mode) && "machine mode must be pointer"); for(i = 0; i < n_pos; ++i) { - int p = pos[i]; - ir_node *param = get_Call_param(irn, p); - ir_node *addr = curr_sp; - ir_node *mem = NULL; - type *param_type = get_method_param_type(mt, p); - int param_size = get_type_size_bytes(param_type); + int p = pos[i]; + be_abi_call_arg_t *arg = get_call_arg(call, 0, p); + ir_node *param = get_Call_param(irn, p); + ir_node *addr = curr_sp; + ir_node *mem = NULL; + type *param_type = get_method_param_type(mt, p); + int param_size = get_type_size_bytes(param_type) + arg->space_after; + + curr_ofs += arg->space_before; + curr_ofs = round_up2(curr_ofs, arg->alignment); /* Make the expression to compute the argument's offset. */ if(curr_ofs > 0) { @@ -456,7 +472,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) mem = new_r_Proj(irg, bl, mem, mode_M, pn_Store_M); } - /* Make a memcopy for compound arguments. */ + /* Make a mem copy for compound arguments. */ else { assert(mode_is_reference(get_irn_mode(param))); mem = new_r_CopyB(irg, bl, curr_mem, addr, param, param_type); @@ -474,7 +490,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) */ if(do_seq) { curr_ofs = 0; - curr_sp = be_new_IncSP(sp, irg, bl, curr_sp, no_mem, param_size, be_stack_dir_along); + curr_sp = be_new_IncSP(sp, irg, bl, curr_sp, no_mem, param_size, be_stack_dir_expand); curr_mem = mem; } } @@ -520,17 +536,20 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) unspeakable Proj_T from the Call. Therefore, all real argument Proj numbers must be increased by pn_Call_max */ - proj += pn_Call_max; + proj += pn_Call_max; set_Proj_proj(res, proj); obstack_ptr_grow(obst, res); if(proj > curr_res_proj) curr_res_proj = proj; - if(arg->in_reg) + if(arg->in_reg) { pset_remove_ptr(caller_save, arg->reg); + //pmap_insert(arg_regs, arg->reg, INT_TO_PTR(proj + 1)) + } } } } + curr_res_proj++; obstack_ptr_grow(obst, NULL); res_projs = obstack_finish(obst); @@ -540,20 +559,31 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) obstack_ptr_grow(obst, get_Call_param(irn, low_args[i])); in = obstack_finish(obst); + if(env->call->flags.bits.call_has_imm && get_irn_opcode(call_ptr) == iro_SymConst) { - low_call = be_new_Call(irg, bl, curr_mem, curr_sp, curr_sp, curr_res_proj, n_low_args, in); + low_call = be_new_Call(irg, bl, curr_mem, curr_sp, curr_sp, curr_res_proj + pset_count(caller_save), n_low_args, in); be_Call_set_entity(low_call, get_SymConst_entity(call_ptr)); } - else - low_call = be_new_Call(irg, bl, curr_mem, curr_sp, call_ptr, curr_res_proj, n_low_args, in); + else + low_call = be_new_Call(irg, bl, curr_mem, curr_sp, call_ptr, curr_res_proj + pset_count(caller_save), n_low_args, in); + + set_irn_dbg_info(low_call, get_irn_dbg_info(irn)); + + /* + TODO: + Set the register class of the call address to the same as the stack pointer's. + That' probably buggy for some architectures. + */ + be_node_set_reg_class(low_call, be_pos_Call_ptr, sp->reg_class); /* Set the register classes and constraints of the Call parameters. */ for(i = 0; i < n_low_args; ++i) { int index = low_args[i]; be_abi_call_arg_t *arg = get_call_arg(call, 0, index); assert(arg->reg != NULL); - be_set_constr_single_reg(low_call, index, arg->reg); + + be_set_constr_single_reg(low_call, be_pos_Call_first_arg + index, arg->reg); } /* Set the register constraints of the results. */ @@ -582,11 +612,13 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) int i, n; for(reg = pset_first(caller_save), n = 0; reg; reg = pset_next(caller_save), ++n) { - ir_node *proj = new_r_Proj(irg, bl, low_call, reg->reg_class->mode, curr_res_proj++); + ir_node *proj = new_r_Proj(irg, bl, low_call, reg->reg_class->mode, curr_res_proj); /* memorize the register in the link field. we need afterwards to set the register class of the keep correctly. */ + be_set_constr_single_reg(low_call, BE_OUT_POS(curr_res_proj), reg); set_irn_link(proj, (void *) reg); obstack_ptr_grow(obst, proj); + curr_res_proj++; } in = (ir_node **) obstack_finish(obst); @@ -613,8 +645,9 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) if(!mem_proj) mem_proj = new_r_Proj(irg, bl, low_call, mode_M, pn_Call_M); - /* Make a Proj for the stack pointer. */ - curr_sp = be_new_IncSP(sp, irg, bl, curr_sp, mem_proj, stack_size, be_stack_dir_against); + /* Clean up the stack frame if we allocated it */ + if(!no_alloc) + curr_sp = be_new_IncSP(sp, irg, bl, curr_sp, mem_proj, stack_size, be_stack_dir_shrink); } be_abi_call_free(call); @@ -631,7 +664,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) */ static ir_node *adjust_alloc(be_abi_irg_t *env, ir_node *alloc, ir_node *curr_sp) { - if(get_Alloc_where(alloc) == stack_alloc) { + if (get_Alloc_where(alloc) == stack_alloc) { ir_node *bl = get_nodes_block(alloc); ir_graph *irg = get_irn_irg(bl); ir_node *alloc_mem = NULL; @@ -660,6 +693,9 @@ static ir_node *adjust_alloc(be_abi_irg_t *env, ir_node *alloc, ir_node *curr_sp } } + /* TODO: Beware: currently Alloc nodes without a result might happen, + only escape analysis kills them and this phase runs only for object + oriented source. So this must be fixed. */ assert(alloc_res != NULL); exchange(alloc_res, env->isa->stack_dir < 0 ? new_alloc : curr_sp); @@ -833,7 +869,7 @@ static ir_node *setup_frame(be_abi_irg_t *env) int stack_nr = get_Proj_proj(stack); if(flags.try_omit_fp) { - stack = be_new_IncSP(sp, irg, bl, stack, no_mem, BE_STACK_FRAME_SIZE, be_stack_dir_along); + stack = be_new_IncSP(sp, irg, bl, stack, no_mem, BE_STACK_FRAME_SIZE, be_stack_dir_expand); frame = stack; } @@ -847,7 +883,7 @@ static ir_node *setup_frame(be_abi_irg_t *env) arch_set_irn_register(env->birg->main_env->arch_env, frame, bp); } - stack = be_new_IncSP(sp, irg, bl, stack, frame, BE_STACK_FRAME_SIZE, be_stack_dir_along); + stack = be_new_IncSP(sp, irg, bl, stack, frame, BE_STACK_FRAME_SIZE, be_stack_dir_expand); } be_node_set_flags(env->reg_params, -(stack_nr + 1), arch_irn_flags_ignore); @@ -872,7 +908,7 @@ static void clearup_frame(be_abi_irg_t *env, ir_node *ret, pmap *reg_map, struct pmap_entry *ent; if(env->call->flags.bits.try_omit_fp) { - stack = be_new_IncSP(sp, irg, bl, stack, ret_mem, BE_STACK_FRAME_SIZE, be_stack_dir_against); + stack = be_new_IncSP(sp, irg, bl, stack, ret_mem, BE_STACK_FRAME_SIZE, be_stack_dir_shrink); } else { @@ -916,7 +952,10 @@ static ir_type *compute_arg_type(be_abi_irg_t *env, be_abi_call_t *call, ir_type if(arg->on_stack) { snprintf(buf, sizeof(buf), "param_%d", i); arg->stack_ent = new_entity(res, new_id_from_str(buf), param_type); + ofs += arg->space_before; + ofs = round_up2(ofs, arg->alignment); set_entity_offset_bytes(arg->stack_ent, ofs); + ofs += arg->space_after; ofs += get_type_size_bytes(param_type); } } @@ -1003,7 +1042,7 @@ static reg_node_map_t *reg_map_to_arr(struct obstack *obst, pmap *reg_map) static void create_barrier(be_abi_irg_t *env, ir_node *bl, ir_node **mem, pmap *regs, int in_req) { ir_graph *irg = env->birg->irg; - int i, n; + int n; int n_regs = pmap_count(regs); ir_node *irn; ir_node **in; @@ -1011,8 +1050,8 @@ static void create_barrier(be_abi_irg_t *env, ir_node *bl, ir_node **mem, pmap * rm = reg_map_to_arr(&env->obst, regs); - for(i = 0, n = 0; i < n_regs; ++i, ++n) - obstack_ptr_grow(&env->obst, rm[i].irn); + for(n = 0; n < n_regs; ++n) + obstack_ptr_grow(&env->obst, rm[n].irn); if(mem) { obstack_ptr_grow(&env->obst, *mem); @@ -1028,7 +1067,8 @@ static void create_barrier(be_abi_irg_t *env, ir_node *bl, ir_node **mem, pmap * ir_node *proj; const arch_register_t *reg = rm[n].reg; - proj = new_r_Proj(env->birg->irg, bl, irn, get_irn_mode(rm[i].irn), n); + proj = new_r_Proj(env->birg->irg, bl, irn, get_irn_mode(rm[n].irn), n); + be_node_set_reg_class(irn, n, reg->reg_class); if(in_req) be_set_constr_single_reg(irn, n, reg); be_set_constr_single_reg(irn, pos, reg); @@ -1132,7 +1172,7 @@ static void modify_irg(be_abi_irg_t *env) const arch_register_class_t *cls = arch_isa_get_reg_class(isa, i); for(j = 0; j < cls->n_regs; ++j) { const arch_register_t *reg = &cls->regs[j]; - if(arch_register_type_is(reg, callee_save)) + if(arch_register_type_is(reg, callee_save) || arch_register_type_is(reg, ignore)) pmap_insert(env->regs, (void *) reg, NULL); } } @@ -1182,10 +1222,10 @@ static void modify_irg(be_abi_irg_t *env) create_barrier(env, bl, &mem, env->regs, 0); env->init_sp = be_abi_reg_map_get(env->regs, sp); - env->init_sp = be_new_IncSP(sp, irg, bl, env->init_sp, no_mem, BE_STACK_FRAME_SIZE, be_stack_dir_along); + env->init_sp = be_new_IncSP(sp, irg, bl, env->init_sp, no_mem, BE_STACK_FRAME_SIZE, be_stack_dir_expand); arch_set_irn_register(env->birg->main_env->arch_env, env->init_sp, sp); be_abi_reg_map_set(env->regs, sp, env->init_sp); - frame_pointer = be_abi_reg_map_get(env->regs, sp); + frame_pointer = be_abi_reg_map_get(env->regs, fp_reg); set_irg_frame(irg, frame_pointer); /* Now, introduce stack param nodes for all parameters passed on the stack */ @@ -1236,9 +1276,11 @@ static void modify_irg(be_abi_irg_t *env) int n_res = get_Return_n_ress(irn); pmap *reg_map = pmap_create(); ir_node *mem = get_Return_mem(irn); + int in_max; ir_node *ret; int i, n; ir_node **in; + const arch_register_t **regs; pmap_insert(reg_map, (void *) sp, pmap_get(env->regs, (void *) sp)); @@ -1261,8 +1303,20 @@ static void modify_irg(be_abi_irg_t *env) create_barrier(env, bl, &mem, reg_map, 1); call->cb->epilogue(env->cb, bl, &mem, reg_map); - obstack_ptr_grow(&env->obst, mem); - obstack_ptr_grow(&env->obst, pmap_get(reg_map, (void *) sp)); + /* + Maximum size of the in array for Return nodes is + return args + callee save/ignore registers + memory + stack pointer + */ + in_max = pmap_count(reg_map) + get_Return_n_ress(irn) + 2; + + in = obstack_alloc(&env->obst, in_max * sizeof(in[0])); + regs = obstack_alloc(&env->obst, in_max * sizeof(regs[0])); + + in[0] = mem; + in[1] = be_abi_reg_map_get(reg_map, sp); + regs[0] = NULL; + regs[1] = sp; + n = 2; /* clear SP entry, since it has already been grown. */ pmap_insert(reg_map, (void *) sp, NULL); @@ -1270,23 +1324,29 @@ static void modify_irg(be_abi_irg_t *env) ir_node *res = get_Return_res(irn, i); be_abi_call_arg_t *arg = get_call_arg(call, 1, i); - obstack_ptr_grow(&env->obst, pmap_get(reg_map, (void *) arg->reg)); + in[n] = be_abi_reg_map_get(reg_map, arg->reg); + regs[n++] = arg->reg; /* Clear the map entry to mark the register as processed. */ - pmap_insert(reg_map, (void *) arg->reg, NULL); + be_abi_reg_map_set(reg_map, arg->reg, NULL); } /* grow the rest of the stuff. */ pmap_foreach(reg_map, ent) { - if(ent->value) - obstack_ptr_grow(&env->obst, ent->value); + if(ent->value) { + in[n] = ent->value; + regs[n++] = ent->key; + } } /* The in array for the new back end return is now ready. */ - n = obstack_object_size(&env->obst) / sizeof(in[0]); - in = obstack_finish(&env->obst); ret = be_new_Return(irg, bl, n, in); + /* Set the register classes of the return's parameter accordingly. */ + for(i = 0; i < n; ++i) + if(regs[i]) + be_node_set_reg_class(ret, i, regs[i]->reg_class); + /* Free the space of the Epilog's in array and the register <-> proj map. */ obstack_free(&env->obst, in); exchange(irn, ret); @@ -1294,6 +1354,7 @@ static void modify_irg(be_abi_irg_t *env) } } + del_pset(dont_save); obstack_free(&env->obst, args); } @@ -1327,7 +1388,7 @@ be_abi_irg_t *be_abi_introduce(be_irg_t *birg) env->stack_phis = pset_new_ptr(16); env->init_sp = dummy = new_r_Unknown(irg, env->isa->sp->reg_class->mode); - env->cb = env->call->cb->init(env->call, env->isa, irg); + env->cb = env->call->cb->init(env->call, birg->main_env->arch_env, irg); obstack_init(&env->obst); @@ -1406,14 +1467,14 @@ void be_abi_fix_stack_nodes(be_abi_irg_t *env) } /** - * Translates a direction of an IncSP node (either be_stack_dir_against, or ...along) + * Translates a direction of an IncSP node (either be_stack_dir_shrink, or ...expand) * into -1 or 1, respectively. * @param irn The node. * @return 1, if the direction of the IncSP was along, -1 if against. */ static int get_dir(ir_node *irn) { - return 1 - 2 * (be_get_IncSP_direction(irn) == be_stack_dir_against); + return 1 - 2 * (be_get_IncSP_direction(irn) == be_stack_dir_shrink); } static int process_stack_bias(be_abi_irg_t *env, ir_node *bl, int bias)