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711 lines
18 KiB
711 lines
18 KiB
/*
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* Create trampolines to invoke arbitrary functions.
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* Copyright (c) 2002 Sergey Chaban <serge@wildwestsoftware.com>
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*
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* Contributions by Malte Hildingson
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*/
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#include "arm-codegen.h"
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#include "arm-dis.h"
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#if defined(_WIN32_WCE) || defined (UNDER_CE)
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# include <windows.h>
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#else
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#include <unistd.h>
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#include <sys/mman.h>
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#endif
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#if !defined(PLATFORM_MACOSX)
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#include <errno.h>
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#include "mono/metadata/class.h"
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#include "mono/metadata/tabledefs.h"
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#include "mono/interpreter/interp.h"
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#include "mono/metadata/appdomain.h"
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#if 0
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# define ARM_DUMP_DISASM 1
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#endif
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/* prototypes for private functions (to avoid compiler warnings) */
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void flush_icache (void);
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void* alloc_code_buff (int num_instr);
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/*
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* The resulting function takes the form:
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* void func (void (*callme)(), void *retval, void *this_obj, stackval *arguments);
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* NOTE: all args passed in ARM registers (A1-A4),
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* then copied to R4-R7 (see definitions below).
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*/
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#define REG_FUNC_ADDR ARMREG_R4
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#define REG_RETVAL ARMREG_R5
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#define REG_THIS ARMREG_R6
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#define REG_ARGP ARMREG_R7
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#define ARG_SIZE sizeof(stackval)
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void flush_icache ()
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{
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#if defined(_WIN32)
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FlushInstructionCache(GetCurrentProcess(), NULL, 0);
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#else
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# if 0
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asm ("mov r0, r0");
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asm ("mov r0, #0");
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asm ("mcr p15, 0, r0, c7, c7, 0");
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# else
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/* TODO: use (movnv pc, rx) method */
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# endif
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#endif
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}
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void* alloc_code_buff (int num_instr)
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{
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void* code_buff;
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int code_size = num_instr * sizeof(arminstr_t);
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#if defined(_WIN32) || defined(UNDER_CE)
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int old_prot = 0;
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code_buff = malloc(code_size);
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VirtualProtect(code_buff, code_size, PAGE_EXECUTE_READWRITE, &old_prot);
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#else
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int page_size = sysconf(_SC_PAGESIZE);
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int new_code_size;
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new_code_size = code_size + page_size - 1;
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code_buff = malloc(new_code_size);
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code_buff = (void *) (((int) code_buff + page_size - 1) & ~(page_size - 1));
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if (mprotect(code_buff, code_size, PROT_READ|PROT_WRITE|PROT_EXEC) != 0) {
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g_critical (G_GNUC_PRETTY_FUNCTION
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": mprotect error: %s", g_strerror (errno));
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}
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#endif
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return code_buff;
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}
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/*
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* Refer to ARM Procedure Call Standard (APCS) for more info.
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*/
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MonoPIFunc mono_arch_create_trampoline (MonoMethodSignature *sig, gboolean string_ctor)
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{
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MonoType* param;
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MonoPIFunc code_buff;
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arminstr_t* p;
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guint32 code_size, stack_size;
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guint32 simple_type;
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int i, hasthis, aregs, regc, stack_offs;
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int this_loaded;
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guchar reg_alloc [ARM_NUM_ARG_REGS];
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/* pessimistic estimation for prologue/epilogue size */
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code_size = 16 + 16;
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/* push/pop work regs */
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code_size += 2;
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/* call */
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code_size += 2;
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/* handle retval */
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code_size += 2;
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stack_size = 0;
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hasthis = sig->hasthis ? 1 : 0;
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aregs = ARM_NUM_ARG_REGS - hasthis;
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for (i = 0, regc = aregs; i < sig->param_count; ++i) {
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param = sig->params [i];
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/* keep track of argument sizes */
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if (i < ARM_NUM_ARG_REGS) reg_alloc [i] = 0;
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if (param->byref) {
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if (regc > 0) {
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code_size += 1;
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reg_alloc [i] = regc;
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--regc;
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} else {
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code_size += 2;
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stack_size += sizeof(gpointer);
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}
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} else {
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simple_type = param->type;
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enum_calc_size:
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switch (simple_type) {
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case MONO_TYPE_BOOLEAN:
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case MONO_TYPE_CHAR:
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case MONO_TYPE_I1:
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case MONO_TYPE_U1:
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case MONO_TYPE_I2:
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case MONO_TYPE_U2:
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case MONO_TYPE_I4:
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case MONO_TYPE_U4:
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case MONO_TYPE_I:
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case MONO_TYPE_U:
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case MONO_TYPE_PTR:
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case MONO_TYPE_R4:
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case MONO_TYPE_SZARRAY:
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case MONO_TYPE_CLASS:
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case MONO_TYPE_OBJECT:
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case MONO_TYPE_STRING:
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if (regc > 0) {
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/* register arg */
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code_size += 1;
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reg_alloc [i] = regc;
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--regc;
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} else {
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/* stack arg */
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code_size += 2;
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stack_size += 4;
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}
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break;
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case MONO_TYPE_I8:
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case MONO_TYPE_U8:
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case MONO_TYPE_R8:
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/* keep track of argument sizes */
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if (regc > 1) {
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/* fits into registers, two LDRs */
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code_size += 2;
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reg_alloc [i] = regc;
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regc -= 2;
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} else if (regc > 0) {
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/* first half fits into register, one LDR */
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code_size += 1;
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reg_alloc [i] = regc;
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--regc;
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/* the rest on the stack, LDR/STR */
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code_size += 2;
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stack_size += 4;
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} else {
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/* stack arg, 4 instrs - 2x(LDR/STR) */
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code_size += 4;
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stack_size += 2 * 4;
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}
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break;
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case MONO_TYPE_VALUETYPE:
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if (param->data.klass->enumtype) {
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simple_type = param->data.klass->enum_basetype->type;
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goto enum_calc_size;
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}
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if (mono_class_value_size(param->data.klass, NULL) != 4) {
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g_error("can only marshal enums, not generic structures (size: %d)", mono_class_value_size(param->data.klass, NULL));
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}
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if (regc > 0) {
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/* register arg */
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code_size += 1;
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reg_alloc [i] = regc;
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--regc;
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} else {
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/* stack arg */
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code_size += 2;
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stack_size += 4;
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}
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break;
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default :
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break;
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}
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}
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}
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code_buff = (MonoPIFunc)alloc_code_buff(code_size);
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p = (arminstr_t*)code_buff;
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/* prologue */
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p = arm_emit_lean_prologue(p, stack_size,
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/* save workset (r4-r7) */
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(1 << ARMREG_R4) | (1 << ARMREG_R5) | (1 << ARMREG_R6) | (1 << ARMREG_R7));
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/* copy args into workset */
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/* callme - always present */
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ARM_MOV_REG_REG(p, ARMREG_R4, ARMREG_A1);
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/* retval */
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if (sig->ret->byref || string_ctor || (sig->ret->type != MONO_TYPE_VOID)) {
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ARM_MOV_REG_REG(p, ARMREG_R5, ARMREG_A2);
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}
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/* this_obj */
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if (sig->hasthis) {
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this_loaded = 0;
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if (stack_size == 0) {
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ARM_MOV_REG_REG(p, ARMREG_A1, ARMREG_A3);
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this_loaded = 1;
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} else {
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ARM_MOV_REG_REG(p, ARMREG_R6, ARMREG_A3);
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}
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}
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/* args */
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if (sig->param_count != 0) {
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ARM_MOV_REG_REG(p, ARMREG_R7, ARMREG_A4);
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}
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stack_offs = stack_size;
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/* handle arguments */
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/* in reverse order so we could use r0 (arg1) for memory transfers */
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for (i = sig->param_count; --i >= 0;) {
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param = sig->params [i];
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if (param->byref) {
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if (i < aregs && reg_alloc[i] > 0) {
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ARM_LDR_IMM(p, ARMREG_A1 + i, REG_ARGP, i*ARG_SIZE);
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} else {
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stack_offs -= sizeof(armword_t);
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ARM_LDR_IMM(p, ARMREG_R0, REG_ARGP, i*ARG_SIZE);
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ARM_STR_IMM(p, ARMREG_R0, ARMREG_SP, stack_offs);
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}
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} else {
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simple_type = param->type;
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enum_marshal:
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switch (simple_type) {
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case MONO_TYPE_BOOLEAN:
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case MONO_TYPE_CHAR:
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case MONO_TYPE_I1:
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case MONO_TYPE_U1:
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case MONO_TYPE_I2:
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case MONO_TYPE_U2:
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case MONO_TYPE_I4:
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case MONO_TYPE_U4:
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case MONO_TYPE_I:
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case MONO_TYPE_U:
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case MONO_TYPE_PTR:
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case MONO_TYPE_R4:
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case MONO_TYPE_SZARRAY:
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case MONO_TYPE_CLASS:
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case MONO_TYPE_OBJECT:
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case MONO_TYPE_STRING:
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if (i < aregs && reg_alloc [i] > 0) {
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/* pass in register */
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ARM_LDR_IMM(p, ARMREG_A1 + hasthis + (aregs - reg_alloc [i]), REG_ARGP, i*ARG_SIZE);
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} else {
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stack_offs -= sizeof(armword_t);
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ARM_LDR_IMM(p, ARMREG_R0, REG_ARGP, i*ARG_SIZE);
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ARM_STR_IMM(p, ARMREG_R0, ARMREG_SP, stack_offs);
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}
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break;
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case MONO_TYPE_I8:
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case MONO_TYPE_U8:
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case MONO_TYPE_R8:
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if (i < aregs && reg_alloc [i] > 0) {
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if (reg_alloc [i] > 1) {
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/* pass in registers */
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ARM_LDR_IMM(p, ARMREG_A1 + hasthis + (aregs - reg_alloc [i]), REG_ARGP, i*ARG_SIZE);
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ARM_LDR_IMM(p, ARMREG_A1 + hasthis + (aregs - reg_alloc [i]) + 1, REG_ARGP, i*ARG_SIZE + 4);
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} else {
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stack_offs -= sizeof(armword_t);
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ARM_LDR_IMM(p, ARMREG_R0, REG_ARGP, i*ARG_SIZE + 4);
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ARM_STR_IMM(p, ARMREG_R0, ARMREG_SP, stack_offs);
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ARM_LDR_IMM(p, ARMREG_A1 + hasthis + (aregs - reg_alloc [i]), REG_ARGP, i*ARG_SIZE);
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}
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} else {
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/* two words transferred on the stack */
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stack_offs -= 2*sizeof(armword_t);
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ARM_LDR_IMM(p, ARMREG_R0, REG_ARGP, i*ARG_SIZE);
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ARM_STR_IMM(p, ARMREG_R0, ARMREG_SP, stack_offs);
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ARM_LDR_IMM(p, ARMREG_R0, REG_ARGP, i*ARG_SIZE + 4);
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ARM_STR_IMM(p, ARMREG_R0, ARMREG_SP, stack_offs + 4);
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}
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break;
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case MONO_TYPE_VALUETYPE:
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if (param->data.klass->enumtype) {
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/* it's an enum value, proceed based on its base type */
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simple_type = param->data.klass->enum_basetype->type;
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goto enum_marshal;
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} else {
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if (i < aregs && reg_alloc[i] > 0) {
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int vtreg = ARMREG_A1 + hasthis +
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hasthis + (aregs - reg_alloc[i]);
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ARM_LDR_IMM(p, vtreg, REG_ARGP, i * ARG_SIZE);
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ARM_LDR_IMM(p, vtreg, vtreg, 0);
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} else {
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stack_offs -= sizeof(armword_t);
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ARM_LDR_IMM(p, ARMREG_R0, REG_ARGP, i * ARG_SIZE);
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ARM_LDR_IMM(p, ARMREG_R0, ARMREG_R0, 0);
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ARM_STR_IMM(p, ARMREG_R0, ARMREG_SP, stack_offs);
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}
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}
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break;
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default:
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break;
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}
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}
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}
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if (sig->hasthis && !this_loaded) {
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/* [this] always passed in A1, regardless of sig->call_convention */
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ARM_MOV_REG_REG(p, ARMREG_A1, REG_THIS);
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}
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/* call [func] */
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ARM_MOV_REG_REG(p, ARMREG_LR, ARMREG_PC);
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ARM_MOV_REG_REG(p, ARMREG_PC, REG_FUNC_ADDR);
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/* handle retval */
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if (sig->ret->byref || string_ctor) {
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ARM_STR_IMM(p, ARMREG_R0, REG_RETVAL, 0);
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} else {
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simple_type = sig->ret->type;
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enum_retvalue:
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switch (simple_type) {
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case MONO_TYPE_BOOLEAN:
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case MONO_TYPE_I1:
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case MONO_TYPE_U1:
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ARM_STRB_IMM(p, ARMREG_R0, REG_RETVAL, 0);
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break;
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case MONO_TYPE_CHAR:
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case MONO_TYPE_I2:
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case MONO_TYPE_U2:
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ARM_STRH_IMM(p, ARMREG_R0, REG_RETVAL, 0);
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break;
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/*
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* A 32-bit integer and integer-equivalent return value
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* is returned in R0.
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* Single-precision floating-point values are returned in R0.
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*/
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case MONO_TYPE_I:
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case MONO_TYPE_U:
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case MONO_TYPE_I4:
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case MONO_TYPE_U4:
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case MONO_TYPE_R4:
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case MONO_TYPE_OBJECT:
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case MONO_TYPE_CLASS:
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case MONO_TYPE_ARRAY:
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case MONO_TYPE_SZARRAY:
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case MONO_TYPE_STRING:
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ARM_STR_IMM(p, ARMREG_R0, REG_RETVAL, 0);
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break;
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/*
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* A 64-bit integer is returned in R0 and R1.
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* Double-precision floating-point values are returned in R0 and R1.
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*/
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case MONO_TYPE_I8:
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case MONO_TYPE_U8:
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case MONO_TYPE_R8:
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ARM_STR_IMM(p, ARMREG_R0, REG_RETVAL, 0);
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ARM_STR_IMM(p, ARMREG_R1, REG_RETVAL, 4);
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break;
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case MONO_TYPE_VALUETYPE:
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if (sig->ret->data.klass->enumtype) {
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simple_type = sig->ret->data.klass->enum_basetype->type;
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goto enum_retvalue;
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}
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break;
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case MONO_TYPE_VOID:
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break;
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default:
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break;
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}
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}
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p = arm_emit_std_epilogue(p, stack_size,
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/* restore R4-R7 */
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(1 << ARMREG_R4) | (1 << ARMREG_R5) | (1 << ARMREG_R6) | (1 << ARMREG_R7));
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flush_icache();
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#ifdef ARM_DUMP_DISASM
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_armdis_decode((arminstr_t*)code_buff, ((guint8*)p) - ((guint8*)code_buff));
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#endif
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return code_buff;
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}
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#define MINV_OFFS(member) G_STRUCT_OFFSET(MonoInvocation, member)
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/*
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* Returns a pointer to a native function that can be used to
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* call the specified method.
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* The function created will receive the arguments according
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* to the call convention specified in the method.
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* This function works by creating a MonoInvocation structure,
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* filling the fields in and calling ves_exec_method on it.
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* Still need to figure out how to handle the exception stuff
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* across the managed/unmanaged boundary.
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*/
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void* mono_arch_create_method_pointer (MonoMethod* method)
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{
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MonoMethodSignature* sig;
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guchar* p, * p_method, * p_stackval_from_data, * p_exec;
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void* code_buff;
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int i, stack_size, arg_pos, arg_add, stackval_pos, offs;
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int areg, reg_args, shift, pos;
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MonoJitInfo *ji;
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code_buff = alloc_code_buff(128);
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p = (guchar*)code_buff;
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sig = method->signature;
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ARM_B(p, 3);
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/* embed magic number followed by method pointer */
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*p++ = 'M';
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*p++ = 'o';
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*p++ = 'n';
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*p++ = 'o';
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/* method ptr */
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*(void**)p = method;
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p_method = p;
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p += 4;
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/* call table */
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*(void**)p = stackval_from_data;
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p_stackval_from_data = p;
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p += 4;
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*(void**)p = ves_exec_method;
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p_exec = p;
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p += 4;
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stack_size = sizeof(MonoInvocation) + ARG_SIZE*(sig->param_count + 1) + ARM_NUM_ARG_REGS*2*sizeof(armword_t);
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/* prologue */
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p = (guchar*)arm_emit_lean_prologue((arminstr_t*)p, stack_size,
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(1 << ARMREG_R4) |
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(1 << ARMREG_R5) |
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(1 << ARMREG_R6) |
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(1 << ARMREG_R7));
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/* R7 - ptr to stack args */
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ARM_MOV_REG_REG(p, ARMREG_R7, ARMREG_IP);
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/*
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* Initialize MonoInvocation fields, first the ones known now.
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*/
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ARM_MOV_REG_IMM8(p, ARMREG_R4, 0);
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ARM_STR_IMM(p, ARMREG_R4, ARMREG_SP, MINV_OFFS(ex));
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ARM_STR_IMM(p, ARMREG_R4, ARMREG_SP, MINV_OFFS(ex_handler));
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ARM_STR_IMM(p, ARMREG_R4, ARMREG_SP, MINV_OFFS(parent));
|
|
|
|
/* Set the method pointer. */
|
|
ARM_LDR_IMM(p, ARMREG_R4, ARMREG_PC, -(int)(p - p_method + sizeof(arminstr_t)*2));
|
|
ARM_STR_IMM(p, ARMREG_R4, ARMREG_SP, MINV_OFFS(method));
|
|
|
|
if (sig->hasthis) {
|
|
/* [this] in A1 */
|
|
ARM_STR_IMM(p, ARMREG_A1, ARMREG_SP, MINV_OFFS(obj));
|
|
} else {
|
|
/* else set minv.obj to NULL */
|
|
ARM_STR_IMM(p, ARMREG_R4, ARMREG_SP, MINV_OFFS(obj));
|
|
}
|
|
|
|
/* copy args from registers to stack */
|
|
areg = ARMREG_A1 + sig->hasthis;
|
|
arg_pos = -(int)(ARM_NUM_ARG_REGS - sig->hasthis) * 2 * sizeof(armword_t);
|
|
arg_add = 0;
|
|
for (i = 0; i < sig->param_count; ++i) {
|
|
if (areg >= ARM_NUM_ARG_REGS) break;
|
|
ARM_STR_IMM(p, areg, ARMREG_R7, arg_pos);
|
|
++areg;
|
|
if (!sig->params[i]->byref) {
|
|
switch (sig->params[i]->type) {
|
|
case MONO_TYPE_I8:
|
|
case MONO_TYPE_U8:
|
|
case MONO_TYPE_R8:
|
|
if (areg >= ARM_NUM_ARG_REGS) {
|
|
/* load second half of 64-bit arg */
|
|
ARM_LDR_IMM(p, ARMREG_R4, ARMREG_R7, 0);
|
|
ARM_STR_IMM(p, ARMREG_R4, ARMREG_R7, arg_pos + sizeof(armword_t));
|
|
arg_add = sizeof(armword_t);
|
|
} else {
|
|
/* second half is already the register */
|
|
ARM_STR_IMM(p, areg, ARMREG_R7, arg_pos + sizeof(armword_t));
|
|
++areg;
|
|
}
|
|
break;
|
|
case MONO_TYPE_VALUETYPE:
|
|
/* assert */
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
arg_pos += 2 * sizeof(armword_t);
|
|
}
|
|
/* number of args passed in registers */
|
|
reg_args = i;
|
|
|
|
|
|
|
|
/*
|
|
* Calc and save stack args ptr,
|
|
* args follow MonoInvocation struct on the stack.
|
|
*/
|
|
ARM_ADD_REG_IMM8(p, ARMREG_R1, ARMREG_SP, sizeof(MonoInvocation));
|
|
ARM_STR_IMM(p, ARMREG_R1, ARMREG_SP, MINV_OFFS(stack_args));
|
|
|
|
/* convert method args to stackvals */
|
|
arg_pos = -(int)(ARM_NUM_ARG_REGS - sig->hasthis) * 2 * sizeof(armword_t);
|
|
stackval_pos = sizeof(MonoInvocation);
|
|
for (i = 0; i < sig->param_count; ++i) {
|
|
if (i < reg_args) {
|
|
ARM_SUB_REG_IMM8(p, ARMREG_A3, ARMREG_R7, -arg_pos);
|
|
arg_pos += 2 * sizeof(armword_t);
|
|
} else {
|
|
if (arg_pos < 0) arg_pos = 0;
|
|
pos = arg_pos + arg_add;
|
|
if (pos <= 0xFF) {
|
|
ARM_ADD_REG_IMM8(p, ARMREG_A3, ARMREG_R7, pos);
|
|
} else {
|
|
if (is_arm_const((armword_t)pos)) {
|
|
shift = calc_arm_mov_const_shift((armword_t)pos);
|
|
ARM_ADD_REG_IMM(p, ARMREG_A3, ARMREG_R7, pos >> ((32 - shift) & 31), shift >> 1);
|
|
} else {
|
|
p = (guchar*)arm_mov_reg_imm32((arminstr_t*)p, ARMREG_R6, (armword_t)pos);
|
|
ARM_ADD_REG_REG(p, ARMREG_A2, ARMREG_R7, ARMREG_R6);
|
|
}
|
|
}
|
|
arg_pos += sizeof(armword_t);
|
|
if (!sig->params[i]->byref) {
|
|
switch (sig->params[i]->type) {
|
|
case MONO_TYPE_I8:
|
|
case MONO_TYPE_U8:
|
|
case MONO_TYPE_R8:
|
|
arg_pos += sizeof(armword_t);
|
|
break;
|
|
case MONO_TYPE_VALUETYPE:
|
|
/* assert */
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* A2 = result */
|
|
if (stackval_pos <= 0xFF) {
|
|
ARM_ADD_REG_IMM8(p, ARMREG_A2, ARMREG_SP, stackval_pos);
|
|
} else {
|
|
if (is_arm_const((armword_t)stackval_pos)) {
|
|
shift = calc_arm_mov_const_shift((armword_t)stackval_pos);
|
|
ARM_ADD_REG_IMM(p, ARMREG_A2, ARMREG_SP, stackval_pos >> ((32 - shift) & 31), shift >> 1);
|
|
} else {
|
|
p = (guchar*)arm_mov_reg_imm32((arminstr_t*)p, ARMREG_R6, (armword_t)stackval_pos);
|
|
ARM_ADD_REG_REG(p, ARMREG_A2, ARMREG_SP, ARMREG_R6);
|
|
}
|
|
}
|
|
|
|
/* A1 = type */
|
|
p = (guchar*)arm_mov_reg_imm32((arminstr_t*)p, ARMREG_A1, (armword_t)sig->params [i]);
|
|
|
|
stackval_pos += ARG_SIZE;
|
|
|
|
offs = -(p + 2*sizeof(arminstr_t) - p_stackval_from_data);
|
|
/* load function address */
|
|
ARM_LDR_IMM(p, ARMREG_R4, ARMREG_PC, offs);
|
|
/* call stackval_from_data */
|
|
ARM_MOV_REG_REG(p, ARMREG_LR, ARMREG_PC);
|
|
ARM_MOV_REG_REG(p, ARMREG_PC, ARMREG_R4);
|
|
}
|
|
|
|
/* store retval ptr */
|
|
p = (guchar*)arm_mov_reg_imm32((arminstr_t*)p, ARMREG_R5, (armword_t)stackval_pos);
|
|
ARM_ADD_REG_REG(p, ARMREG_R5, ARMREG_SP, ARMREG_R4);
|
|
ARM_STR_IMM(p, ARMREG_R5, ARMREG_SP, MINV_OFFS(retval));
|
|
|
|
/*
|
|
* Call the method.
|
|
*/
|
|
/* A1 = MonoInvocation ptr */
|
|
ARM_MOV_REG_REG(p, ARMREG_A1, ARMREG_SP);
|
|
offs = -(p + 2*sizeof(arminstr_t) - p_exec);
|
|
/* load function address */
|
|
ARM_LDR_IMM(p, ARMREG_R4, ARMREG_PC, offs);
|
|
/* call ves_exec */
|
|
ARM_MOV_REG_REG(p, ARMREG_LR, ARMREG_PC);
|
|
ARM_MOV_REG_REG(p, ARMREG_PC, ARMREG_R4);
|
|
|
|
|
|
/*
|
|
* Move retval into reg.
|
|
*/
|
|
if (sig->ret->byref) {
|
|
ARM_LDR_IMM(p, ARMREG_R0, ARMREG_R5, 0);
|
|
} else {
|
|
switch (sig->ret->type) {
|
|
case MONO_TYPE_BOOLEAN:
|
|
case MONO_TYPE_I1:
|
|
case MONO_TYPE_U1:
|
|
ARM_LDRB_IMM(p, ARMREG_R0, ARMREG_R5, 0);
|
|
break;
|
|
case MONO_TYPE_CHAR:
|
|
case MONO_TYPE_I2:
|
|
case MONO_TYPE_U2:
|
|
ARM_LDRH_IMM(p, ARMREG_R0, ARMREG_R5, 0);
|
|
break;
|
|
case MONO_TYPE_I:
|
|
case MONO_TYPE_U:
|
|
case MONO_TYPE_I4:
|
|
case MONO_TYPE_U4:
|
|
case MONO_TYPE_R4:
|
|
case MONO_TYPE_OBJECT:
|
|
case MONO_TYPE_CLASS:
|
|
case MONO_TYPE_ARRAY:
|
|
case MONO_TYPE_SZARRAY:
|
|
ARM_LDR_IMM(p, ARMREG_R0, ARMREG_R5, 0);
|
|
break;
|
|
case MONO_TYPE_I8:
|
|
case MONO_TYPE_U8:
|
|
case MONO_TYPE_R8:
|
|
ARM_LDR_IMM(p, ARMREG_R0, ARMREG_R5, 0);
|
|
ARM_LDR_IMM(p, ARMREG_R1, ARMREG_R5, 4);
|
|
break;
|
|
case MONO_TYPE_VOID:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
p = (guchar*)arm_emit_std_epilogue((arminstr_t*)p, stack_size,
|
|
(1 << ARMREG_R4) |
|
|
(1 << ARMREG_R5) |
|
|
(1 << ARMREG_R6) |
|
|
(1 << ARMREG_R7));
|
|
|
|
flush_icache();
|
|
|
|
#ifdef ARM_DUMP_DISASM
|
|
_armdis_decode((arminstr_t*)code_buff, ((guint8*)p) - ((guint8*)code_buff));
|
|
#endif
|
|
|
|
ji = g_new0(MonoJitInfo, 1);
|
|
ji->method = method;
|
|
ji->code_size = ((guint8 *) p) - ((guint8 *) code_buff);
|
|
ji->code_start = (gpointer) code_buff;
|
|
|
|
mono_jit_info_table_add(mono_get_root_domain (), ji);
|
|
|
|
return code_buff;
|
|
}
|
|
|
|
|
|
/*
|
|
* mono_create_method_pointer () will insert a pointer to the MonoMethod
|
|
* so that the interp can easily get at the data: this function will retrieve
|
|
* the method from the code stream.
|
|
*/
|
|
MonoMethod* mono_method_pointer_get (void* code)
|
|
{
|
|
unsigned char* c = code;
|
|
/* check out magic number that follows unconditional branch */
|
|
if (c[4] == 'M' &&
|
|
c[5] == 'o' &&
|
|
c[6] == 'n' &&
|
|
c[7] == 'o') return ((MonoMethod**)code)[2];
|
|
return NULL;
|
|
}
|
|
#endif
|