* @file
* @brief calling convention helpers
* @author Matthias Braun
- * @version $Id$
*/
#include "config.h"
static const unsigned ignore_regs[] = {
REG_G0,
- /* reserved for sparc ABI: */
+ /* used in case an address offset does not fit into an immediate: */
+ REG_G4,
+ /* reserved for SPARC ABI: */
REG_G5,
REG_G6,
REG_G7,
static arch_register_req_t float_result_reqs_double[8];
static arch_register_req_t float_result_reqs_quad[8];
-static const arch_register_t *const caller_saves[] = {
- &sparc_registers[REG_G1],
- &sparc_registers[REG_G2],
- &sparc_registers[REG_G3],
- &sparc_registers[REG_G4],
- &sparc_registers[REG_O0],
- &sparc_registers[REG_O1],
- &sparc_registers[REG_O2],
- &sparc_registers[REG_O3],
- &sparc_registers[REG_O4],
- &sparc_registers[REG_O5],
- &sparc_registers[REG_F0],
- &sparc_registers[REG_F1],
- &sparc_registers[REG_F2],
- &sparc_registers[REG_F3],
- &sparc_registers[REG_F4],
- &sparc_registers[REG_F5],
- &sparc_registers[REG_F6],
- &sparc_registers[REG_F7],
- &sparc_registers[REG_F8],
- &sparc_registers[REG_F9],
- &sparc_registers[REG_F10],
- &sparc_registers[REG_F11],
- &sparc_registers[REG_F12],
- &sparc_registers[REG_F13],
- &sparc_registers[REG_F14],
- &sparc_registers[REG_F15],
- &sparc_registers[REG_F16],
- &sparc_registers[REG_F17],
- &sparc_registers[REG_F18],
- &sparc_registers[REG_F19],
- &sparc_registers[REG_F20],
- &sparc_registers[REG_F21],
- &sparc_registers[REG_F22],
- &sparc_registers[REG_F23],
- &sparc_registers[REG_F24],
- &sparc_registers[REG_F25],
- &sparc_registers[REG_F26],
- &sparc_registers[REG_F27],
- &sparc_registers[REG_F28],
- &sparc_registers[REG_F29],
- &sparc_registers[REG_F30],
- &sparc_registers[REG_F31],
+static const unsigned caller_saves[] = {
+ REG_G1,
+ REG_G2,
+ REG_G3,
+ REG_O0,
+ REG_O1,
+ REG_O2,
+ REG_O3,
+ REG_O4,
+ REG_O5,
+ REG_F0,
+ REG_F1,
+ REG_F2,
+ REG_F3,
+ REG_F4,
+ REG_F5,
+ REG_F6,
+ REG_F7,
+ REG_F8,
+ REG_F9,
+ REG_F10,
+ REG_F11,
+ REG_F12,
+ REG_F13,
+ REG_F14,
+ REG_F15,
+ REG_F16,
+ REG_F17,
+ REG_F18,
+ REG_F19,
+ REG_F20,
+ REG_F21,
+ REG_F22,
+ REG_F23,
+ REG_F24,
+ REG_F25,
+ REG_F26,
+ REG_F27,
+ REG_F28,
+ REG_F29,
+ REG_F30,
+ REG_F31,
};
static unsigned default_caller_saves[BITSET_SIZE_ELEMS(N_SPARC_REGISTERS)];
+static const unsigned returns_twice_saved[] = {
+ REG_SP,
+ REG_FRAME_POINTER,
+ REG_I7
+};
+static unsigned default_returns_twice_saves[BITSET_SIZE_ELEMS(N_SPARC_REGISTERS)];
+
/**
* Maps an input register representing the i'th register input
* to the i'th register output.
int n_param_regs = ARRAY_SIZE(param_regs);
unsigned n_float_result_regs = ARRAY_SIZE(float_result_regs);
bool omit_fp = false;
+ mtp_additional_properties mtp
+ = get_method_additional_properties(function_type);
reg_or_stackslot_t *params;
reg_or_stackslot_t *results;
int n_params;
if (irg != NULL) {
const be_options_t *options = be_get_irg_options(irg);
omit_fp = options->omit_fp;
- irg_walk_graph(irg, check_omit_fp, NULL, &omit_fp);
+ /* our current vaarg handling needs the standard space to store the
+ * args 0-5 in it */
+ if (get_method_variadicity(function_type) == variadicity_variadic)
+ omit_fp = false;
+ if (omit_fp == true) {
+ irg_walk_graph(irg, check_omit_fp, NULL, &omit_fp);
+ }
}
caller_saves = rbitset_malloc(N_SPARC_REGISTERS);
- rbitset_copy(caller_saves, default_caller_saves, N_SPARC_REGISTERS);
+ if (mtp & mtp_property_returns_twice) {
+ rbitset_copy(caller_saves, default_returns_twice_saves,
+ N_SPARC_REGISTERS);
+ } else {
+ rbitset_copy(caller_saves, default_caller_saves, N_SPARC_REGISTERS);
+ }
/* determine how parameters are passed */
n_params = get_method_n_params(function_type);
} else {
param->type = param_type;
param->offset = stack_offset;
- /* increase offset 4 bytes so everything is aligned */
- stack_offset += bits > 32 ? bits/8 : 4;
+ /* increase offset by at least SPARC_REGISTER_SIZE bytes so everything is aligned */
+ stack_offset += bits > 8 * SPARC_REGISTER_SIZE ? bits / 8 : SPARC_REGISTER_SIZE;
continue;
}
param->type = type;
param->offset = stack_offset;
assert(get_mode_size_bits(regmode) == 32);
- stack_offset += 4;
+ stack_offset += SPARC_REGISTER_SIZE;
}
}
}
{
size_t i;
for (i = 0; i < ARRAY_SIZE(caller_saves); ++i) {
- rbitset_set(default_caller_saves, caller_saves[i]->global_index);
+ rbitset_set(default_caller_saves, caller_saves[i]);
+ }
+
+ rbitset_set_all(default_returns_twice_saves, N_SPARC_REGISTERS);
+ for (i = 0; i < ARRAY_SIZE(returns_twice_saved); ++i) {
+ rbitset_clear(default_returns_twice_saves, returns_twice_saved[i]);
+ }
+ for (i = 0; i < ARRAY_SIZE(ignore_regs); ++i) {
+ rbitset_clear(default_returns_twice_saves, ignore_regs[i]);
}
for (i = 0; i < ARRAY_SIZE(float_result_reqs_double); i += 2) {
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