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remotelaboratory/lib/ffts/src/arch/sparc/tramp.c

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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Create trampolines to invoke arbitrary functions.
*
* Copyright (C) Ximian Inc.
*
* Authors: Paolo Molaro (lupus@ximian.com)
* Jeffrey Stedfast <fejj@ximian.com>
* Mark Crichton <crichton@gimp.org>
*
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include "sparc-codegen.h"
#include "mono/metadata/class.h"
#include "mono/metadata/tabledefs.h"
#include "mono/interpreter/interp.h"
#include "mono/metadata/appdomain.h"
#include "mono/metadata/debug-helpers.h"
#include "mono/metadata/marshal.h"
#define ARG_SIZE sizeof (stackval)
#define PROLOG_INS 1
#define CALL_INS 3 /* Max 3. 1 for the jmpl and 1 for the nop and 1 for the possible unimp */
#define EPILOG_INS 2
#define FLOAT_REGS 32
#define OUT_REGS 6
#define LOCAL_REGS 8
#define SLOT_SIZE sizeof(gpointer)
#if SPARCV9
#define MINIMAL_STACK_SIZE 22
#define BIAS 2047
#define FRAME_ALIGN 16
#else
#define MINIMAL_STACK_SIZE 23
#define BIAS 0
#define FRAME_ALIGN 8
#endif
#define NOT_IMPL(x) g_error("FIXME: %s", x);
/*#define DEBUG(a) a*/
#define DEBUG(a)
/* Some assembly... */
#ifdef __GNUC__
#define flushi(addr) __asm__ __volatile__ ("flush %0"::"r"(addr):"memory")
#else
static void flushi(void *addr)
{
asm("flush %i0");
}
#endif
static char*
sig_to_name (MonoMethodSignature *sig, const char *prefix)
{
int i;
char *result;
GString *res = g_string_new ("");
char *p;
if (prefix) {
g_string_append (res, prefix);
g_string_append_c (res, '_');
}
mono_type_get_desc (res, sig->ret, TRUE);
for (i = 0; i < sig->param_count; ++i) {
g_string_append_c (res, '_');
mono_type_get_desc (res, sig->params [i], TRUE);
}
result = res->str;
p = result;
/* remove chars Sun's asssembler doesn't like */
while (*p != '\0') {
if (*p == '.' || *p == '/')
*p = '_';
else if (*p == '&')
*p = '$';
else if (*p == '[' || *p == ']')
*p = 'X';
p++;
}
g_string_free (res, FALSE);
return result;
}
static void
sparc_disassemble_code (guint32 *code_buffer, guint32 *p, const char *id)
{
guchar *cp;
FILE *ofd;
if (!(ofd = fopen ("/tmp/test.s", "w")))
g_assert_not_reached();
fprintf (ofd, "%s:\n", id);
for (cp = (guchar *)code_buffer; cp < (guchar *)p; cp++)
fprintf (ofd, ".byte %d\n", *cp);
fclose (ofd);
#ifdef __GNUC__
system ("as /tmp/test.s -o /tmp/test.o;objdump -d /tmp/test.o");
#else
/* this assumes we are using Sun tools as we aren't GCC */
#if SPARCV9
system ("as -xarch=v9 /tmp/test.s -o /tmp/test.o;dis /tmp/test.o");
#else
system ("as /tmp/test.s -o /tmp/test.o;dis /tmp/test.o");
#endif
#endif
}
static void
add_general (guint *gr, guint *stack_size, guint *code_size, gboolean simple)
{
if (simple) {
if (*gr >= OUT_REGS) {
*stack_size += SLOT_SIZE;
*code_size += 12;
} else {
*code_size += 4;
}
} else {
if (*gr >= OUT_REGS - 1) {
*stack_size += 8 + (*stack_size % 8); /* ???64 */
*code_size += 16;
} else {
*code_size += 16;
}
(*gr)++;
}
(*gr)++;
}
static void
calculate_sizes (MonoMethodSignature *sig, guint *stack_size, guint *code_size,
gboolean string_ctor, gboolean *use_memcpy)
{
guint i, fr, gr;
guint32 simpletype;
fr = gr = 0;
*stack_size = MINIMAL_STACK_SIZE * SLOT_SIZE;
*code_size = (PROLOG_INS + CALL_INS + EPILOG_INS) * 4;
/* function arguments */
if (sig->hasthis)
add_general (&gr, stack_size, code_size, TRUE);
for (i = 0; i < sig->param_count; i++) {
if (sig->params[i]->byref) {
add_general (&gr, stack_size, code_size, TRUE);
continue;
}
simpletype = sig->params[i]->type;
enum_calc_size:
switch (simpletype) {
case MONO_TYPE_R4:
#if SPARCV9
(*code_size) += 4; /* for the fdtos */
#else
(*code_size) += 12;
(*stack_size) += 4;
#endif
case MONO_TYPE_BOOLEAN:
case MONO_TYPE_CHAR:
case MONO_TYPE_I1:
case MONO_TYPE_U1:
case MONO_TYPE_I2:
case MONO_TYPE_U2:
case MONO_TYPE_I4:
case MONO_TYPE_U4:
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_PTR:
case MONO_TYPE_CLASS:
case MONO_TYPE_OBJECT:
case MONO_TYPE_STRING:
case MONO_TYPE_SZARRAY:
add_general (&gr, stack_size, code_size, TRUE);
break;
case MONO_TYPE_VALUETYPE: {
gint size;
guint32 align;
if (sig->params[i]->data.klass->enumtype) {
simpletype = sig->params[i]->data.klass->enum_basetype->type;
goto enum_calc_size;
}
size = mono_class_native_size (sig->params[i]->data.klass, &align);
#if SPARCV9
if (size != 4) {
#else
if (1) {
#endif
DEBUG(fprintf(stderr, "copy %d byte struct on stack\n", size));
*use_memcpy = TRUE;
*code_size += 8*4;
*stack_size = (*stack_size + (align - 1)) & (~(align -1));
*stack_size += (size + 3) & (~3);
if (gr > OUT_REGS) {
*code_size += 4;
*stack_size += 4;
}
} else {
add_general (&gr, stack_size, code_size, TRUE);
#if SPARCV9
*code_size += 8;
#else
*code_size += 4;
#endif
}
break;
}
case MONO_TYPE_I8:
case MONO_TYPE_R8:
add_general (&gr, stack_size, code_size, FALSE);
break;
default:
g_error ("Can't trampoline 0x%x", sig->params[i]->type);
}
}
/* function return value */
if (sig->ret->byref || string_ctor) {
*code_size += 8;
} else {
simpletype = sig->ret->type;
enum_retvalue:
switch (simpletype) {
case MONO_TYPE_BOOLEAN:
case MONO_TYPE_I1:
case MONO_TYPE_U1:
case MONO_TYPE_I2:
case MONO_TYPE_U2:
case MONO_TYPE_CHAR:
case MONO_TYPE_I4:
case MONO_TYPE_U4:
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_CLASS:
case MONO_TYPE_OBJECT:
case MONO_TYPE_PTR:
case MONO_TYPE_STRING:
case MONO_TYPE_R4:
case MONO_TYPE_R8:
case MONO_TYPE_SZARRAY:
case MONO_TYPE_ARRAY:
*code_size += 8;
break;
case MONO_TYPE_I8:
*code_size += 12;
break;
case MONO_TYPE_VALUETYPE: {
gint size;
if (sig->ret->data.klass->enumtype) {
simpletype = sig->ret->data.klass->enum_basetype->type;
goto enum_retvalue;
}
size = mono_class_native_size (sig->ret->data.klass, NULL);
#if SPARCV9
if (size <= 32)
*code_size += 8 + (size + 7) / 2;
else
*code_size += 8;
#else
*code_size += 8;
#endif
break;
}
case MONO_TYPE_VOID:
break;
default:
g_error ("Can't handle as return value 0x%x", sig->ret->type);
}
}
if (*use_memcpy) {
*stack_size += 8;
*code_size += 24;
if (sig->hasthis) {
*stack_size += SLOT_SIZE;
*code_size += 4;
}
}
*stack_size = (*stack_size + (FRAME_ALIGN - 1)) & (~(FRAME_ALIGN -1));
}
static inline guint32 *
emit_epilog (guint32 *p, MonoMethodSignature *sig, guint stack_size)
{
int ret_offset = 8;
/*
* Standard epilog.
* 8 may be 12 when returning structures (to skip unimp opcode).
*/
#if !SPARCV9
if (sig != NULL && !sig->ret->byref && sig->ret->type == MONO_TYPE_VALUETYPE && !sig->ret->data.klass->enumtype)
ret_offset = 12;
#endif
sparc_jmpl_imm (p, sparc_i7, ret_offset, sparc_zero);
sparc_restore (p, sparc_zero, sparc_zero, sparc_zero);
return p;
}
static inline guint32 *
emit_prolog (guint32 *p, MonoMethodSignature *sig, guint stack_size)
{
/* yes kids, it is this simple! */
sparc_save_imm (p, sparc_sp, -stack_size, sparc_sp);
return p;
}
#if SPARCV9
#define sparc_st_ptr(a,b,c,d) sparc_stx(a,b,c,d)
#define sparc_st_imm_ptr(a,b,c,d) sparc_stx_imm(a,b,c,d)
#define sparc_ld_ptr(a,b,c,d) sparc_ldx(a,b,c,d)
#define sparc_ld_imm_ptr(a,b,c,d) sparc_ldx_imm(a,b,c,d)
#else
#define sparc_st_ptr(a,b,c,d) sparc_st(a,b,c,d)
#define sparc_st_imm_ptr(a,b,c,d) sparc_st_imm(a,b,c,d)
#define sparc_ld_ptr(a,b,c,d) sparc_ld(a,b,c,d)
#define sparc_ld_imm_ptr(a,b,c,d) sparc_ld_imm(a,b,c,d)
#endif
/* synonyms for when values are really widened scalar values */
#define sparc_st_imm_word sparc_st_imm_ptr
#define ARG_BASE sparc_i3 /* pointer to args in i3 */
#define SAVE_PTR_IN_GENERIC_REGISTER \
if (gr < OUT_REGS) { \
sparc_ld_imm_ptr (p, ARG_BASE, i*ARG_SIZE, sparc_o0 + gr); \
gr++; \
} else { \
sparc_ld_imm_ptr (p, ARG_BASE, i*ARG_SIZE, sparc_l0); \
sparc_st_imm_ptr (p, sparc_l0, sparc_sp, stack_par_pos); \
stack_par_pos += SLOT_SIZE; \
}
#if SPARCV9
/* This is a half hearted attempt at coping with structs by value - the
actual convention is complicated when floats & doubles are involved as
you end up with fields in different registers on/off the stack.
It will take more time to get right... */
static guint32 *
v9_struct_arg(guint32 *p, int arg_index, MonoClass *klass, int size, guint *p_gr)
{
MonoMarshalType *info = mono_marshal_load_type_info (klass);
int off = 0;
int index = 0;
guint gr = *p_gr;
sparc_ld_imm_ptr (p, ARG_BASE, arg_index*ARG_SIZE, sparc_l0);
if (size > 8) {
if (info->fields [index].field->type->type == MONO_TYPE_R8) {
sparc_lddf_imm (p, sparc_l0, 0, sparc_f0 + 2 * gr);
index++;
}
else {
sparc_ldx_imm (p, sparc_l0, 0, sparc_o0 + gr);
index++; /* FIXME could be multiple fields in one register */
}
gr++;
size -= 8;
off = 8;
}
if (size > 0) {
if (info->fields [index].field->type->type == MONO_TYPE_R8) {
sparc_lddf_imm (p, sparc_l0, off, sparc_f0 + 2 * gr);
index++;
}
else {
/* will load extra garbage off end of short structs ... */
sparc_ldx_imm (p, sparc_l0, off, sparc_o0 + gr);
}
gr++;
}
*p_gr = gr;
return p;
}
#endif
static inline guint32*
emit_save_parameters (guint32 *p, MonoMethodSignature *sig, guint stack_size,
gboolean use_memcpy)
{
guint i, fr, gr, stack_par_pos, struct_pos, cur_struct_pos;
guint32 simpletype;
fr = gr = 0;
stack_par_pos = MINIMAL_STACK_SIZE * SLOT_SIZE + BIAS;
if (sig->hasthis) {
if (use_memcpy) {
/* we don't need to save a thing. */
} else
sparc_mov_reg_reg (p, sparc_i2, sparc_o0);
gr ++;
}
if (use_memcpy) {
cur_struct_pos = struct_pos = stack_par_pos;
for (i = 0; i < sig->param_count; i++) {
if (sig->params[i]->byref)
continue;
if (sig->params[i]->type == MONO_TYPE_VALUETYPE &&
!sig->params[i]->data.klass->enumtype) {
gint size;
guint32 align;
size = mono_class_native_size (sig->params[i]->data.klass, &align);
#if SPARCV9
if (size != 4) {
#else
if (1) {
#endif
/* Add alignment */
stack_par_pos = (stack_par_pos + (align - 1)) & (~(align - 1));
/* need to call memcpy here */
sparc_add_imm (p, 0, sparc_sp, stack_par_pos, sparc_o0);
sparc_ld_imm_ptr (p, sparc_i3, i*16, sparc_o1);
sparc_set (p, (guint32)size, sparc_o2);
sparc_set_ptr (p, (void *)memmove, sparc_l0);
sparc_jmpl_imm (p, sparc_l0, 0, sparc_callsite);
sparc_nop (p);
stack_par_pos += (size + (SLOT_SIZE - 1)) & (~(SLOT_SIZE - 1));
}
}
}
}
if (sig->ret->type == MONO_TYPE_VALUETYPE && !sig->ret->byref) {
MonoClass *klass = sig->ret->data.klass;
if (!klass->enumtype) {
gint size = mono_class_native_size (klass, NULL);
DEBUG(fprintf(stderr, "retval value type size: %d\n", size));
#if SPARCV9
if (size > 32) {
#else
{
#endif
/* pass on buffer in interp.c to called function */
sparc_ld_imm_ptr (p, sparc_i1, 0, sparc_l0);
sparc_st_imm_ptr (p, sparc_l0, sparc_sp, 64);
}
}
}
DEBUG(fprintf(stderr, "%s\n", sig_to_name(sig, FALSE)));
for (i = 0; i < sig->param_count; i++) {
if (sig->params[i]->byref) {
SAVE_PTR_IN_GENERIC_REGISTER;
continue;
}
simpletype = sig->params[i]->type;
enum_calc_size:
switch (simpletype) {
case MONO_TYPE_BOOLEAN:
case MONO_TYPE_I1:
case MONO_TYPE_U1:
case MONO_TYPE_I2:
case MONO_TYPE_U2:
case MONO_TYPE_CHAR:
case MONO_TYPE_I4:
case MONO_TYPE_U4:
if (gr < OUT_REGS) {
sparc_ld_imm (p, ARG_BASE, i*ARG_SIZE, sparc_o0 + gr);
gr++;
} else {
sparc_ld_imm (p, ARG_BASE, i*ARG_SIZE, sparc_l0);
sparc_st_imm_word (p, sparc_l0, sparc_sp, stack_par_pos);
stack_par_pos += SLOT_SIZE;
}
break;
case MONO_TYPE_R4:
#if SPARCV9
sparc_lddf_imm (p, ARG_BASE, i*ARG_SIZE, sparc_f30); /* fix using this fixed reg */
sparc_fdtos(p, sparc_f30, sparc_f0 + 2 * gr + 1);
gr++;
break;
#else
/* Convert from double to single */
sparc_lddf_imm (p, ARG_BASE, i*ARG_SIZE, sparc_f0);
sparc_fdtos (p, sparc_f0, sparc_f0);
/*
* FIXME: Is there an easier way to do an
* freg->ireg move ?
*/
sparc_stf_imm (p, sparc_f0, sparc_sp, stack_par_pos);
if (gr < OUT_REGS) {
sparc_ld_imm (p, sparc_sp, stack_par_pos, sparc_o0 + gr);
gr++;
} else {
sparc_ldf_imm (p, sparc_sp, stack_par_pos, sparc_f0);
sparc_stf_imm (p, sparc_f0, sparc_sp, stack_par_pos);
stack_par_pos += SLOT_SIZE;
}
break;
#endif
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_PTR:
case MONO_TYPE_CLASS:
case MONO_TYPE_OBJECT:
case MONO_TYPE_STRING:
case MONO_TYPE_SZARRAY:
SAVE_PTR_IN_GENERIC_REGISTER;
break;
case MONO_TYPE_VALUETYPE: {
gint size;
guint32 align;
MonoClass *klass = sig->params[i]->data.klass;
if (klass->enumtype) {
simpletype = klass->enum_basetype->type;
goto enum_calc_size;
}
size = mono_class_native_size (klass, &align);
#if SPARCV9
if (size <= 16) {
if (gr < OUT_REGS) {
p = v9_struct_arg(p, i, klass, size, &gr);
} else {
sparc_ld_imm_ptr (p, ARG_BASE, i*ARG_SIZE, sparc_l0);
sparc_ld_imm (p, sparc_l0, 0, sparc_l0);
sparc_st_imm_word (p, sparc_l0, sparc_sp, stack_par_pos);
stack_par_pos += SLOT_SIZE;
}
break;
}
#else
/*
* FIXME: The 32bit ABI docs do not mention that small
* structures are passed in registers.
*/
/*
if (size == 4) {
if (gr < OUT_REGS) {
sparc_ld_imm_ptr (p, ARG_BASE, i*ARG_SIZE, sparc_l0);
sparc_ld_imm (p, sparc_l0, 0, sparc_o0 + gr);
gr++;
} else {
sparc_ld_imm_ptr (p, ARG_BASE, i*ARG_SIZE, sparc_l0);
sparc_ld_imm (p, sparc_l0, 0, sparc_l0);
sparc_st_imm_word (p, sparc_l0, sparc_sp, stack_par_pos);
stack_par_pos += SLOT_SIZE;
}
break;
}
*/
#endif
cur_struct_pos = (cur_struct_pos + (align - 1)) & (~(align - 1));
if (gr < OUT_REGS) {
sparc_add_imm (p, 0, sparc_sp,
cur_struct_pos, sparc_o0 + gr);
gr ++;
} else {
sparc_ld_imm_ptr (p, sparc_sp,
cur_struct_pos,
sparc_l1);
sparc_st_imm_ptr (p, sparc_l1,
sparc_sp,
stack_par_pos);
}
cur_struct_pos += (size + (SLOT_SIZE - 1)) & (~(SLOT_SIZE - 1));
break;
}
#if SPARCV9
case MONO_TYPE_I8:
if (gr < OUT_REGS) {
sparc_ldx_imm (p, ARG_BASE, i*ARG_SIZE, sparc_o0 + gr);
gr++;
} else {
sparc_ldx_imm (p, ARG_BASE, i*ARG_SIZE, sparc_l0);
sparc_stx_imm (p, sparc_l0, sparc_sp, stack_par_pos);
stack_par_pos += SLOT_SIZE;
}
break;
case MONO_TYPE_R8:
sparc_lddf_imm (p, ARG_BASE, i*ARG_SIZE, sparc_f0 + 2 * i);
break;
#else
case MONO_TYPE_I8:
case MONO_TYPE_R8:
if (gr < (OUT_REGS - 1)) {
sparc_ld_imm (p, ARG_BASE, i*ARG_SIZE, sparc_o0 + gr);
gr ++;
sparc_ld_imm (p, ARG_BASE,
(i*ARG_SIZE) + 4,
sparc_o0 + gr);
gr ++;
} else if (gr == (OUT_REGS - 1)) {
/* Split register/stack */
sparc_ld_imm (p, ARG_BASE, i*ARG_SIZE, sparc_o0 + gr);
gr ++;
sparc_ld_imm (p, ARG_BASE, (i*ARG_SIZE) + 4, sparc_l0);
sparc_st_imm (p, sparc_l0, sparc_sp, stack_par_pos);
stack_par_pos += SLOT_SIZE;
} else {
sparc_ld_imm (p, ARG_BASE, i*ARG_SIZE, sparc_l0);
sparc_st_imm (p, sparc_l0, sparc_sp, stack_par_pos);
stack_par_pos += SLOT_SIZE;
sparc_ld_imm (p, ARG_BASE, (i*ARG_SIZE) + 4, sparc_l0);
sparc_st_imm (p, sparc_l0, sparc_sp, stack_par_pos);
stack_par_pos += SLOT_SIZE;
}
break;
#endif
default:
g_error ("Can't trampoline 0x%x", sig->params[i]->type);
}
}
g_assert ((stack_par_pos - BIAS) <= stack_size);
return p;
}
static inline guint32 *
alloc_code_memory (guint code_size)
{
guint32 *p;
p = g_malloc(code_size);
return p;
}
static inline guint32 *
emit_call_and_store_retval (guint32 *p, MonoMethodSignature *sig,
guint stack_size, gboolean string_ctor)
{
guint32 simpletype;
/* call "callme" */
sparc_jmpl_imm (p, sparc_i0, 0, sparc_callsite);
sparc_nop (p);
#if !SPARCV9
if (sig->ret->type == MONO_TYPE_VALUETYPE && !sig->ret->data.klass->enumtype) {
int size = mono_class_native_size (sig->ret->data.klass, NULL);
sparc_unimp (p, size & 4095);
}
#endif
/* get return value */
if (sig->ret->byref || string_ctor) {
sparc_st_ptr (p, sparc_o0, sparc_i1, 0);
} else {
simpletype = sig->ret->type;
enum_retval:
switch (simpletype) {
case MONO_TYPE_BOOLEAN:
case MONO_TYPE_I1:
case MONO_TYPE_U1:
sparc_stb (p, sparc_o0, sparc_i1, 0);
break;
case MONO_TYPE_CHAR:
case MONO_TYPE_I2:
case MONO_TYPE_U2:
sparc_sth (p, sparc_o0, sparc_i1, 0);
break;
case MONO_TYPE_I4:
case MONO_TYPE_U4:
sparc_st (p, sparc_o0, sparc_i1, 0);
break;
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_CLASS:
case MONO_TYPE_OBJECT:
case MONO_TYPE_SZARRAY:
case MONO_TYPE_ARRAY:
case MONO_TYPE_STRING:
case MONO_TYPE_PTR:
sparc_st_ptr (p, sparc_o0, sparc_i1, 0);
break;
case MONO_TYPE_R4:
sparc_stf (p, sparc_f0, sparc_i1, 0);
break;
case MONO_TYPE_R8:
sparc_stdf (p, sparc_f0, sparc_i1, 0);
break;
case MONO_TYPE_I8:
#if SPARCV9
sparc_stx (p, sparc_o0, sparc_i1, 0);
#else
sparc_std (p, sparc_o0, sparc_i1, 0);
#endif
break;
case MONO_TYPE_VALUETYPE: {
gint size;
if (sig->ret->data.klass->enumtype) {
simpletype = sig->ret->data.klass->enum_basetype->type;
goto enum_retval;
}
#if SPARCV9
size = mono_class_native_size (sig->ret->data.klass, NULL);
if (size <= 32) {
int n_regs = size / 8;
int j;
sparc_ldx_imm (p, sparc_i1, 0, sparc_i1);
/* wrong if there are floating values in the struct... */
for (j = 0; j < n_regs; j++) {
sparc_stx_imm (p, sparc_o0 + j, sparc_i1, j * 8);
}
size -= n_regs * 8;
if (size > 0) {
int last_reg = sparc_o0 + n_regs;
/* get value right aligned in register */
sparc_srlx_imm(p, last_reg, 64 - 8 * size, last_reg);
if ((size & 1) != 0) {
sparc_stb_imm (p, last_reg, sparc_i1, n_regs * 8 + size - 1);
size--;
if (size > 0)
sparc_srlx_imm(p, last_reg, 8, last_reg);
}
if ((size & 2) != 0) {
sparc_sth_imm (p, last_reg, sparc_i1, n_regs * 8 + size - 2);
size -= 2;
if (size > 0)
sparc_srlx_imm(p, last_reg, 16, last_reg);
}
if ((size & 4) != 0)
sparc_st_imm (p, last_reg, sparc_i1, n_regs * 8);
}
}
#endif
}
case MONO_TYPE_VOID:
break;
default:
g_error ("Can't handle as return value 0x%x", sig->ret->type);
}
}
return p;
}
MonoPIFunc
mono_arch_create_trampoline (MonoMethodSignature *sig, gboolean string_ctor)
{
guint32 *p, *code_buffer;
guint stack_size, code_size, i;
gboolean use_memcpy = FALSE;
static GHashTable *cache = NULL;
MonoPIFunc res;
if (!cache)
cache = g_hash_table_new ((GHashFunc)mono_signature_hash,
(GCompareFunc)mono_metadata_signature_equal);
if ((res = (MonoPIFunc)g_hash_table_lookup(cache, sig)))
return res;
calculate_sizes (sig, &stack_size, &code_size,
string_ctor, &use_memcpy);
p = code_buffer = alloc_code_memory (code_size);
p = emit_prolog (p, sig, stack_size);
p = emit_save_parameters (p, sig, stack_size, use_memcpy);
p = emit_call_and_store_retval (p, sig, stack_size, string_ctor);
/* we don't return structs here so pass in NULL as signature */
p = emit_epilog (p, NULL, stack_size);
g_assert(p <= code_buffer + (code_size / 4));
DEBUG(sparc_disassemble_code (code_buffer, p, sig_to_name(sig, NULL)));
/* So here's the deal...
* UltraSPARC will flush a whole cache line at a time
* BUT, older SPARCs won't.
* So, be compatable and flush dwords at a time...
*/
for (i = 0; i < ((p - code_buffer)/2); i++)
flushi((code_buffer + (i*8)));
g_hash_table_insert(cache, sig, code_buffer);
return (MonoPIFunc)code_buffer;
}
#define MINV_POS (MINIMAL_STACK_SIZE * SLOT_SIZE + BIAS)
void *
mono_arch_create_method_pointer (MonoMethod *method)
{
MonoMethodSignature *sig;
MonoJitInfo *ji;
guint stack_size, code_size, stackval_arg_pos, local_pos;
guint i, local_start, reg_param = 0, stack_param, cpos, vt_cur;
guint32 align = 0;
guint32 *p, *code_buffer;
gint *vtbuf;
gint32 simpletype;
code_size = 1024; /* these should be calculated... */
stack_size = 1024;
stack_param = 0;
sig = method->signature;
p = code_buffer = g_malloc (code_size);
DEBUG(fprintf(stderr, "Delegate [start emiting] %s\n", method->name));
DEBUG(fprintf(stderr, "%s\n", sig_to_name(sig, FALSE)));
p = emit_prolog (p, sig, stack_size);
/* fill MonoInvocation */
sparc_st_imm_ptr (p, sparc_g0, sparc_sp,
(MINV_POS + G_STRUCT_OFFSET (MonoInvocation, ex)));
sparc_st_imm_ptr (p, sparc_g0, sparc_sp,
(MINV_POS + G_STRUCT_OFFSET (MonoInvocation, ex_handler)));
sparc_st_imm_ptr (p, sparc_g0, sparc_sp,
(MINV_POS + G_STRUCT_OFFSET (MonoInvocation, parent)));
sparc_set_ptr (p, (void *)method, sparc_l0);
sparc_st_imm_ptr (p, sparc_l0, sparc_sp,
(MINV_POS + G_STRUCT_OFFSET (MonoInvocation, method)));
stackval_arg_pos = MINV_POS + sizeof (MonoInvocation);
local_start = local_pos = stackval_arg_pos + (sig->param_count + 1) * sizeof (stackval);
if (sig->hasthis) {
sparc_st_imm_ptr (p, sparc_i0, sparc_sp,
(MINV_POS + G_STRUCT_OFFSET (MonoInvocation, obj)));
reg_param = 1;
}
if (sig->param_count) {
gint save_count = MIN (OUT_REGS, sig->param_count + sig->hasthis);
for (i = reg_param; i < save_count; i++) {
sparc_st_imm_ptr (p, sparc_i0 + i, sparc_sp, local_pos);
local_pos += SLOT_SIZE;
}
}
/* prepare space for valuetypes */
vt_cur = local_pos;
vtbuf = alloca (sizeof(int)*sig->param_count);
cpos = 0;
for (i = 0; i < sig->param_count; i++) {
MonoType *type = sig->params [i];
vtbuf [i] = -1;
if (!sig->params[i]->byref && type->type == MONO_TYPE_VALUETYPE) {
MonoClass *klass = type->data.klass;
gint size;
if (klass->enumtype)
continue;
size = mono_class_native_size (klass, &align);
cpos += align - 1;
cpos &= ~(align - 1);
vtbuf [i] = cpos;
cpos += size;
}
}
cpos += SLOT_SIZE - 1;
cpos &= ~(SLOT_SIZE - 1);
local_pos += cpos;
/* set MonoInvocation::stack_args */
sparc_add_imm (p, 0, sparc_sp, stackval_arg_pos, sparc_l0);
sparc_st_imm_ptr (p, sparc_l0, sparc_sp,
(MINV_POS + G_STRUCT_OFFSET (MonoInvocation, stack_args)));
/* add stackval arguments */
for (i=0; i < sig->param_count; i++) {
int stack_offset;
int type;
if (reg_param < OUT_REGS) {
stack_offset = local_start + i * SLOT_SIZE;
reg_param++;
} else {
stack_offset = stack_size + 8 + stack_param;
stack_param++;
}
if (!sig->params[i]->byref) {
type = sig->params[i]->type;
enum_arg:
switch (type) {
case MONO_TYPE_I8:
case MONO_TYPE_U8:
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_STRING:
case MONO_TYPE_OBJECT:
case MONO_TYPE_CLASS:
case MONO_TYPE_SZARRAY:
case MONO_TYPE_PTR:
case MONO_TYPE_R8:
break;
case MONO_TYPE_I4:
case MONO_TYPE_U4:
stack_offset += SLOT_SIZE - 4;
break;
case MONO_TYPE_CHAR:
case MONO_TYPE_I2:
case MONO_TYPE_U2:
stack_offset += SLOT_SIZE - 2;
break;
case MONO_TYPE_I1:
case MONO_TYPE_U1:
case MONO_TYPE_BOOLEAN:
stack_offset += SLOT_SIZE - 1;
break;
case MONO_TYPE_VALUETYPE:
if (sig->params[i]->data.klass->enumtype) {
type = sig->params[i]->data.klass->enum_basetype->type;
goto enum_arg;
}
g_assert(vtbuf[i] >= 0);
break;
default:
g_error ("can not cope with delegate arg type %d", type);
}
}
sparc_add_imm (p, 0, sparc_sp, stack_offset, sparc_o2);
if (vtbuf[i] >= 0) {
sparc_add_imm (p, 0, sparc_sp, vt_cur, sparc_o1);
sparc_st_imm_ptr (p, sparc_o1, sparc_sp, stackval_arg_pos);
sparc_add_imm (p, 0, sparc_sp, stackval_arg_pos,
sparc_o1);
sparc_ld_imm_ptr (p, sparc_o2, 0, sparc_o2);
vt_cur += vtbuf[i];
} else {
sparc_add_imm (p, 0, sparc_sp, stackval_arg_pos,
sparc_o1);
}
sparc_set_ptr (p, (void *)sig->params[i], sparc_o0);
sparc_set (p, (guint32)sig->pinvoke, sparc_o3);
/* YOU make the CALL! */
sparc_set_ptr (p, (void *)stackval_from_data, sparc_l0);
sparc_jmpl_imm (p, sparc_l0, 0, sparc_callsite);
sparc_nop (p);
stackval_arg_pos += sizeof(stackval);
}
/* return value storage */
/* Align to dword */
stackval_arg_pos = (stackval_arg_pos + (8 - 1)) & (~(8 -1));
if (sig->param_count) {
sparc_add_imm (p, 0, sparc_sp, stackval_arg_pos, sparc_l0);
}
if (!sig->ret->byref && sig->ret->type == MONO_TYPE_VALUETYPE && !sig->ret->data.klass->enumtype) {
#if !SPARCV9
/* pass on callers buffer */
sparc_ld_imm_ptr (p, sparc_fp, 64, sparc_l1);
sparc_st_imm_ptr (p, sparc_l1, sparc_l0, 0);
#else
sparc_add_imm (p, 0, sparc_l0, sizeof(stackval), sparc_l1);
sparc_st_imm_ptr (p, sparc_l1, sparc_l0, 0);
#endif
}
sparc_st_imm_ptr (p, sparc_l0, sparc_sp,
(MINV_POS + G_STRUCT_OFFSET (MonoInvocation, retval)));
/* call ves_exec_method */
sparc_add_imm (p, 0, sparc_sp, MINV_POS, sparc_o0);
sparc_set_ptr (p, (void *)ves_exec_method, sparc_l0);
sparc_jmpl_imm (p, sparc_l0, 0, sparc_callsite);
sparc_nop (p);
/* move retval from stackval to proper place (r3/r4/...) */
if (sig->ret->byref) {
sparc_ld_imm_ptr (p, sparc_sp, stackval_arg_pos, sparc_i0 );
} else {
enum_retvalue:
switch (sig->ret->type) {
case MONO_TYPE_VOID:
break;
case MONO_TYPE_BOOLEAN:
case MONO_TYPE_I1:
case MONO_TYPE_U1:
case MONO_TYPE_I2:
case MONO_TYPE_U2:
case MONO_TYPE_I4:
case MONO_TYPE_U4:
sparc_ld_imm (p, sparc_sp, stackval_arg_pos, sparc_i0);
break;
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_OBJECT:
case MONO_TYPE_STRING:
case MONO_TYPE_CLASS:
sparc_ld_imm_ptr (p, sparc_sp, stackval_arg_pos, sparc_i0);
break;
case MONO_TYPE_I8:
case MONO_TYPE_U8:
#if SPARCV9
sparc_ldx_imm (p, sparc_sp, stackval_arg_pos, sparc_i0);
#else
sparc_ld_imm (p, sparc_sp, stackval_arg_pos, sparc_i0);
sparc_ld_imm (p, sparc_sp, stackval_arg_pos + 4, sparc_i1);
#endif
break;
case MONO_TYPE_R4:
sparc_lddf_imm (p, sparc_sp, stackval_arg_pos, sparc_f0);
sparc_fdtos(p, sparc_f0, sparc_f0);
break;
case MONO_TYPE_R8:
sparc_lddf_imm (p, sparc_sp, stackval_arg_pos, sparc_f0);
break;
case MONO_TYPE_VALUETYPE: {
gint size;
gint reg = sparc_i0;
if (sig->ret->data.klass->enumtype) {
simpletype = sig->ret->data.klass->enum_basetype->type;
goto enum_retvalue;
}
#if SPARCV9
size = mono_class_native_size (sig->ret->data.klass, NULL);
sparc_ldx_imm (p, sparc_sp, stackval_arg_pos, sparc_l0);
if (size <= 16) {
gint off = 0;
if (size >= 8) {
sparc_ldx_imm (p, sparc_l0, 0, reg);
size -= 8;
off += 8;
reg++;
}
if (size > 0)
sparc_ldx_imm (p, sparc_l0, off, reg);
} else
NOT_IMPL("value type as ret val from delegate");
#endif
break;
}
default:
g_error ("Type 0x%x not handled yet in thunk creation",
sig->ret->type);
break;
}
}
p = emit_epilog (p, sig, stack_size);
for (i = 0; i < ((p - code_buffer)/2); i++)
flushi((code_buffer + (i*8)));
ji = g_new0 (MonoJitInfo, 1);
ji->method = method;
ji->code_size = p - code_buffer;
ji->code_start = code_buffer;
mono_jit_info_table_add (mono_get_root_domain (), ji);
DEBUG(sparc_disassemble_code (code_buffer, p, method->name));
DEBUG(fprintf(stderr, "Delegate [end emiting] %s\n", method->name));
return ji->code_start;
}
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