* Returns a pointer to a method which restores a previously saved sigcontext.
*/
gpointer
-mono_arch_get_restore_context (void)
+mono_arch_get_restore_context_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot)
{
- static guint8 *start = NULL;
- static gboolean inited = FALSE;
+ guint8 *start = NULL;
guint8 *code;
- if (inited)
- return start;
-
/* restore_contect (MonoContext *ctx) */
+ *ji = NULL;
+
start = code = mono_global_codeman_reserve (256);
amd64_mov_reg_reg (code, AMD64_R11, AMD64_ARG_REG1, 8);
amd64_mov_reg_membase (code, AMD64_R14, AMD64_R11, G_STRUCT_OFFSET (MonoContext, r14), 8);
amd64_mov_reg_membase (code, AMD64_R15, AMD64_R11, G_STRUCT_OFFSET (MonoContext, r15), 8);
- amd64_mov_reg_membase (code, AMD64_RSP, AMD64_R11, G_STRUCT_OFFSET (MonoContext, rsp), 8);
-
- /* get return address */
- amd64_mov_reg_membase (code, AMD64_R11, AMD64_R11, G_STRUCT_OFFSET (MonoContext, rip), 8);
+ if (mono_running_on_valgrind ()) {
+ /* Prevent 'Address 0x... is just below the stack ptr.' errors */
+ amd64_mov_reg_membase (code, AMD64_R8, AMD64_R11, G_STRUCT_OFFSET (MonoContext, rsp), 8);
+ amd64_mov_reg_membase (code, AMD64_R11, AMD64_R11, G_STRUCT_OFFSET (MonoContext, rip), 8);
+ amd64_mov_reg_reg (code, AMD64_RSP, AMD64_R8, 8);
+ } else {
+ amd64_mov_reg_membase (code, AMD64_RSP, AMD64_R11, G_STRUCT_OFFSET (MonoContext, rsp), 8);
+ /* get return address */
+ amd64_mov_reg_membase (code, AMD64_R11, AMD64_R11, G_STRUCT_OFFSET (MonoContext, rip), 8);
+ }
/* jump to the saved IP */
amd64_jump_reg (code, AMD64_R11);
- inited = TRUE;
+ mono_arch_flush_icache (start, code - start);
+
+ *code_size = code - start;
return start;
}
* @exc object in this case).
*/
gpointer
-mono_arch_get_call_filter (void)
+mono_arch_get_call_filter_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot)
{
- static guint8 *start;
- static gboolean inited = FALSE;
+ guint8 *start;
int i;
guint8 *code;
guint32 pos;
- if (inited)
- return start;
+ *ji = NULL;
start = code = mono_global_codeman_reserve (128);
g_assert ((code - start) < 128);
- inited = TRUE;
+ mono_arch_flush_icache (start, code - start);
+
+ *code_size = code - start;
return start;
}
* The first few arguments are dummy, to force the other arguments to be passed on
* the stack, this avoids overwriting the argument registers in the throw trampoline.
*/
-static void
-throw_exception (guint64 dummy1, guint64 dummy2, guint64 dummy3, guint64 dummy4,
- guint64 dummy5, guint64 dummy6,
- MonoObject *exc, guint64 rip, guint64 rsp,
- guint64 rbx, guint64 rbp, guint64 r12, guint64 r13,
- guint64 r14, guint64 r15, guint64 rdi, guint64 rsi,
- guint64 rax, guint64 rcx, guint64 rdx,
- guint64 rethrow)
+void
+mono_amd64_throw_exception (guint64 dummy1, guint64 dummy2, guint64 dummy3, guint64 dummy4,
+ guint64 dummy5, guint64 dummy6,
+ MonoObject *exc, guint64 rip, guint64 rsp,
+ guint64 rbx, guint64 rbp, guint64 r12, guint64 r13,
+ guint64 r14, guint64 r15, guint64 rdi, guint64 rsi,
+ guint64 rax, guint64 rcx, guint64 rdx,
+ guint64 rethrow)
{
static void (*restore_context) (MonoContext *);
MonoContext ctx;
if (!restore_context)
- restore_context = mono_arch_get_restore_context ();
+ restore_context = mono_get_restore_context ();
ctx.rsp = rsp;
ctx.rip = rip;
}
static gpointer
-get_throw_trampoline (gboolean rethrow)
+get_throw_trampoline (gboolean rethrow, guint32 *code_size, MonoJumpInfo **ji, gboolean aot)
{
guint8* start;
guint8 *code;
code = start;
- amd64_mov_reg_reg (code, AMD64_R11, AMD64_RSP, 8);
-
-#ifdef PLATFORM_WIN32
- // FIXME: Sync with the !WIN32 code below
- NOT_IMPLEMENTED;
+ *ji = NULL;
- /* align stack */
- amd64_push_imm (code, 0);
- amd64_push_imm (code, 0);
- amd64_push_imm (code, 0);
- amd64_push_imm (code, 0);
-#else
- /* No need to align stack */
- //amd64_push_imm (code, 0);
+ amd64_mov_reg_reg (code, AMD64_R11, AMD64_RSP, 8);
/* reverse order */
amd64_push_imm (code, rethrow);
/* Exception */
amd64_push_reg (code, AMD64_ARG_REG1);
+
+#ifdef PLATFORM_WIN32
+ /* align stack */
+ amd64_push_imm (code, 0);
+ amd64_push_imm (code, 0);
+ amd64_push_imm (code, 0);
+ amd64_push_imm (code, 0);
+ amd64_push_imm (code, 0);
+ amd64_push_imm (code, 0);
#endif
- amd64_mov_reg_imm (code, AMD64_R11, throw_exception);
+ if (aot) {
+ *ji = mono_patch_info_list_prepend (*ji, code - start, MONO_PATCH_INFO_JIT_ICALL_ADDR, "mono_amd64_throw_exception");
+ amd64_mov_reg_membase (code, AMD64_R11, AMD64_RIP, 0, 8);
+ } else {
+ amd64_mov_reg_imm (code, AMD64_R11, mono_amd64_throw_exception);
+ }
amd64_call_reg (code, AMD64_R11);
amd64_breakpoint (code);
+ mono_arch_flush_icache (start, code - start);
+
g_assert ((code - start) < 64);
+ *code_size = code - start;
+
return start;
}
*
*/
gpointer
-mono_arch_get_throw_exception (void)
+mono_arch_get_throw_exception_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot)
{
- static guint8* start;
- static gboolean inited = FALSE;
-
- if (inited)
- return start;
-
- start = get_throw_trampoline (FALSE);
-
- inited = TRUE;
-
- return start;
+ return get_throw_trampoline (FALSE, code_size, ji, aot);
}
gpointer
-mono_arch_get_rethrow_exception (void)
+mono_arch_get_rethrow_exception_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot)
{
- static guint8* start;
- static gboolean inited = FALSE;
-
- if (inited)
- return start;
-
- start = get_throw_trampoline (TRUE);
-
- inited = TRUE;
-
- return start;
+ return get_throw_trampoline (TRUE, code_size, ji, aot);
}
gpointer
-mono_arch_get_throw_exception_by_name (void)
+mono_arch_get_throw_exception_by_name_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot)
{
- static guint8* start;
- static gboolean inited = FALSE;
+ guint8* start;
guint8 *code;
- if (inited)
- return start;
-
start = code = mono_global_codeman_reserve (64);
+ *ji = NULL;
+
/* Not used on amd64 */
amd64_breakpoint (code);
+ mono_arch_flush_icache (start, code - start);
+
+ *code_size = code - start;
+
return start;
}
* needs no relocations in the caller.
*/
gpointer
-mono_arch_get_throw_corlib_exception (void)
+mono_arch_get_throw_corlib_exception_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot)
{
static guint8* start;
- static gboolean inited = FALSE;
guint8 *code;
guint64 throw_ex;
- if (inited)
- return start;
-
start = code = mono_global_codeman_reserve (64);
+ *ji = NULL;
+
/* Push throw_ip */
amd64_push_reg (code, AMD64_ARG_REG2);
/* Call exception_from_token */
amd64_mov_reg_reg (code, AMD64_ARG_REG2, AMD64_ARG_REG1, 8);
- amd64_mov_reg_imm (code, AMD64_ARG_REG1, mono_defaults.exception_class->image);
- amd64_mov_reg_imm (code, AMD64_R11, mono_exception_from_token);
+ if (aot) {
+ *ji = mono_patch_info_list_prepend (*ji, code - start, MONO_PATCH_INFO_IMAGE, mono_defaults.exception_class->image);
+ amd64_mov_reg_membase (code, AMD64_ARG_REG1, AMD64_RIP, 0, 8);
+ *ji = mono_patch_info_list_prepend (*ji, code - start, MONO_PATCH_INFO_JIT_ICALL_ADDR, "mono_exception_from_token");
+ amd64_mov_reg_membase (code, AMD64_R11, AMD64_RIP, 0, 8);
+ } else {
+ amd64_mov_reg_imm (code, AMD64_ARG_REG1, mono_defaults.exception_class->image);
+ amd64_mov_reg_imm (code, AMD64_R11, mono_exception_from_token);
+ }
+#ifdef PLATFORM_WIN32
+ amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, 32);
+#endif
amd64_call_reg (code, AMD64_R11);
+#ifdef PLATFORM_WIN32
+ amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, 32);
+#endif
/* Compute throw_ip */
amd64_pop_reg (code, AMD64_ARG_REG2);
/* Put the throw_ip at the top of the misaligned stack */
amd64_push_reg (code, AMD64_ARG_REG3);
- throw_ex = (guint64)mono_arch_get_throw_exception ();
+ throw_ex = (guint64)mono_get_throw_exception ();
/* Call throw_exception */
amd64_mov_reg_reg (code, AMD64_ARG_REG1, AMD64_RAX, 8);
- amd64_mov_reg_imm (code, AMD64_R11, throw_ex);
+ if (aot) {
+ *ji = mono_patch_info_list_prepend (*ji, code - start, MONO_PATCH_INFO_JIT_ICALL_ADDR, "mono_throw_exception");
+ amd64_mov_reg_membase (code, AMD64_R11, AMD64_RIP, 0, 8);
+ } else {
+ amd64_mov_reg_imm (code, AMD64_R11, throw_ex);
+ }
/* The original IP is on the stack */
amd64_jump_reg (code, AMD64_R11);
g_assert ((code - start) < 64);
- inited = TRUE;
+ mono_arch_flush_icache (start, code - start);
+
+ *code_size = code - start;
return start;
}
sp -= 1;
/* the return addr */
sp [0] = (gpointer)(mctx->rip);
- mctx->rip = (unsigned long)restore_soft_guard_pages;
- mctx->rsp = (unsigned long)sp;
+ mctx->rip = (guint64)restore_soft_guard_pages;
+ mctx->rsp = (guint64)sp;
}
static void
void (*restore_context) (MonoContext *);
MonoContext mctx;
- restore_context = mono_arch_get_restore_context ();
+ restore_context = mono_get_restore_context ();
mono_arch_sigctx_to_monoctx (sigctx, &mctx);
mono_handle_exception (&mctx, obj, MONO_CONTEXT_GET_IP (&mctx), FALSE);
if (stack_ovf)
amd64_push_reg (code, AMD64_RAX);
/* Call the throw trampoline */
- throw_trampoline = mono_arch_get_throw_exception ();
+ throw_trampoline = mono_get_throw_exception ();
amd64_mov_reg_imm (code, AMD64_R11, throw_trampoline);
/* We use a jump instead of a call so we can push the original ip on the stack */
amd64_jump_reg (code, AMD64_R11);
*(gpointer*)(lmf->rsp - 8) = get_throw_pending_exception ();
}
+
+#ifdef PLATFORM_WIN32
+
+/*
+ * The mono_arch_unwindinfo* methods are used to build and add
+ * function table info for each emitted method from mono. On Winx64
+ * the seh handler will not be called if the mono methods are not
+ * added to the function table.
+ *
+ * We should not need to add non-volatile register info to the
+ * table since mono stores that info elsewhere. (Except for the register
+ * used for the fp.)
+ */
+
+#define MONO_MAX_UNWIND_CODES 22
+
+typedef union _UNWIND_CODE {
+ struct {
+ guchar CodeOffset;
+ guchar UnwindOp : 4;
+ guchar OpInfo : 4;
+ };
+ gushort FrameOffset;
+} UNWIND_CODE, *PUNWIND_CODE;
+
+typedef struct _UNWIND_INFO {
+ guchar Version : 3;
+ guchar Flags : 5;
+ guchar SizeOfProlog;
+ guchar CountOfCodes;
+ guchar FrameRegister : 4;
+ guchar FrameOffset : 4;
+ /* custom size for mono allowing for mono allowing for*/
+ /*UWOP_PUSH_NONVOL ebp offset = 21*/
+ /*UWOP_ALLOC_LARGE : requires 2 or 3 offset = 20*/
+ /*UWOP_SET_FPREG : requires 2 offset = 17*/
+ /*UWOP_PUSH_NONVOL offset = 15-0*/
+ UNWIND_CODE UnwindCode[MONO_MAX_UNWIND_CODES];
+
+/* UNWIND_CODE MoreUnwindCode[((CountOfCodes + 1) & ~1) - 1];
+ * union {
+ * OPTIONAL ULONG ExceptionHandler;
+ * OPTIONAL ULONG FunctionEntry;
+ * };
+ * OPTIONAL ULONG ExceptionData[]; */
+} UNWIND_INFO, *PUNWIND_INFO;
+
+typedef struct
+{
+ RUNTIME_FUNCTION runtimeFunction;
+ UNWIND_INFO unwindInfo;
+} MonoUnwindInfo, *PMonoUnwindInfo;
+
+static void
+mono_arch_unwindinfo_create (gpointer* monoui)
+{
+ PMonoUnwindInfo newunwindinfo;
+ *monoui = newunwindinfo = g_new0 (MonoUnwindInfo, 1);
+ newunwindinfo->unwindInfo.Version = 1;
+}
+
+void
+mono_arch_unwindinfo_add_push_nonvol (gpointer* monoui, gpointer codebegin, gpointer nextip, guchar reg )
+{
+ PMonoUnwindInfo unwindinfo;
+ PUNWIND_CODE unwindcode;
+ guchar codeindex;
+ if (!*monoui)
+ mono_arch_unwindinfo_create (monoui);
+
+ unwindinfo = (MonoUnwindInfo*)*monoui;
+
+ if (unwindinfo->unwindInfo.CountOfCodes >= MONO_MAX_UNWIND_CODES)
+ g_error ("Larger allocation needed for the unwind information.");
+
+ codeindex = MONO_MAX_UNWIND_CODES - (++unwindinfo->unwindInfo.CountOfCodes);
+ unwindcode = &unwindinfo->unwindInfo.UnwindCode[codeindex];
+ unwindcode->UnwindOp = 0; /*UWOP_PUSH_NONVOL*/
+ unwindcode->CodeOffset = (((guchar*)nextip)-((guchar*)codebegin));
+ unwindcode->OpInfo = reg;
+
+ if (unwindinfo->unwindInfo.SizeOfProlog >= unwindcode->CodeOffset)
+ g_error ("Adding unwind info in wrong order.");
+
+ unwindinfo->unwindInfo.SizeOfProlog = unwindcode->CodeOffset;
+}
+
+void
+mono_arch_unwindinfo_add_set_fpreg (gpointer* monoui, gpointer codebegin, gpointer nextip, guchar reg )
+{
+ PMonoUnwindInfo unwindinfo;
+ PUNWIND_CODE unwindcode;
+ guchar codeindex;
+ if (!*monoui)
+ mono_arch_unwindinfo_create (monoui);
+
+ unwindinfo = (MonoUnwindInfo*)*monoui;
+
+ if (unwindinfo->unwindInfo.CountOfCodes + 1 >= MONO_MAX_UNWIND_CODES)
+ g_error ("Larger allocation needed for the unwind information.");
+
+ codeindex = MONO_MAX_UNWIND_CODES - (unwindinfo->unwindInfo.CountOfCodes += 2);
+ unwindcode = &unwindinfo->unwindInfo.UnwindCode[codeindex];
+ unwindcode->FrameOffset = 0; /*Assuming no frame pointer offset for mono*/
+ unwindcode++;
+ unwindcode->UnwindOp = 3; /*UWOP_SET_FPREG*/
+ unwindcode->CodeOffset = (((guchar*)nextip)-((guchar*)codebegin));
+ unwindcode->OpInfo = reg;
+
+ unwindinfo->unwindInfo.FrameRegister = reg;
+
+ if (unwindinfo->unwindInfo.SizeOfProlog >= unwindcode->CodeOffset)
+ g_error ("Adding unwind info in wrong order.");
+
+ unwindinfo->unwindInfo.SizeOfProlog = unwindcode->CodeOffset;
+}
+
+void
+mono_arch_unwindinfo_add_alloc_stack (gpointer* monoui, gpointer codebegin, gpointer nextip, guint size )
+{
+ PMonoUnwindInfo unwindinfo;
+ PUNWIND_CODE unwindcode;
+ guchar codeindex;
+ guchar codesneeded;
+ if (!*monoui)
+ mono_arch_unwindinfo_create (monoui);
+
+ unwindinfo = (MonoUnwindInfo*)*monoui;
+
+ if (size < 0x8)
+ g_error ("Stack allocation must be equal to or greater than 0x8.");
+
+ if (size <= 0x80)
+ codesneeded = 1;
+ else if (size <= 0x7FFF8)
+ codesneeded = 2;
+ else
+ codesneeded = 3;
+
+ if (unwindinfo->unwindInfo.CountOfCodes + codesneeded > MONO_MAX_UNWIND_CODES)
+ g_error ("Larger allocation needed for the unwind information.");
+
+ codeindex = MONO_MAX_UNWIND_CODES - (unwindinfo->unwindInfo.CountOfCodes += codesneeded);
+ unwindcode = &unwindinfo->unwindInfo.UnwindCode[codeindex];
+
+ if (codesneeded == 1) {
+ /*The size of the allocation is
+ (the number in the OpInfo member) times 8 plus 8*/
+ unwindcode->OpInfo = (size - 8)/8;
+ unwindcode->UnwindOp = 2; /*UWOP_ALLOC_SMALL*/
+ }
+ else {
+ if (codesneeded == 3) {
+ /*the unscaled size of the allocation is recorded
+ in the next two slots in little-endian format*/
+ *((unsigned int*)(&unwindcode->FrameOffset)) = size;
+ unwindcode += 2;
+ unwindcode->OpInfo = 1;
+ }
+ else {
+ /*the size of the allocation divided by 8
+ is recorded in the next slot*/
+ unwindcode->FrameOffset = size/8;
+ unwindcode++;
+ unwindcode->OpInfo = 0;
+
+ }
+ unwindcode->UnwindOp = 1; /*UWOP_ALLOC_LARGE*/
+ }
+
+ unwindcode->CodeOffset = (((guchar*)nextip)-((guchar*)codebegin));
+
+ if (unwindinfo->unwindInfo.SizeOfProlog >= unwindcode->CodeOffset)
+ g_error ("Adding unwind info in wrong order.");
+
+ unwindinfo->unwindInfo.SizeOfProlog = unwindcode->CodeOffset;
+}
+
+guint
+mono_arch_unwindinfo_get_size (gpointer monoui)
+{
+ PMonoUnwindInfo unwindinfo;
+ if (!monoui)
+ return 0;
+
+ unwindinfo = (MonoUnwindInfo*)monoui;
+ return (8 + sizeof (MonoUnwindInfo)) -
+ (sizeof (UNWIND_CODE) * (MONO_MAX_UNWIND_CODES - unwindinfo->unwindInfo.CountOfCodes));
+}
+
+void
+mono_arch_unwindinfo_install_unwind_info (gpointer* monoui, gpointer code, guint code_size)
+{
+ PMonoUnwindInfo unwindinfo, targetinfo;
+ guchar codecount;
+ guint64 targetlocation;
+ if (!*monoui)
+ return;
+
+ unwindinfo = (MonoUnwindInfo*)*monoui;
+ targetlocation = (guint64)&(((guchar*)code)[code_size]);
+ targetinfo = (PMonoUnwindInfo) ALIGN_TO(targetlocation, 8);
+
+ unwindinfo->runtimeFunction.EndAddress = code_size;
+ unwindinfo->runtimeFunction.UnwindData = ((guchar*)&targetinfo->unwindInfo) - ((guchar*)code);
+
+ memcpy (targetinfo, unwindinfo, sizeof (MonoUnwindInfo) - (sizeof (UNWIND_CODE) * MONO_MAX_UNWIND_CODES));
+
+ codecount = unwindinfo->unwindInfo.CountOfCodes;
+ if (codecount) {
+ memcpy (&targetinfo->unwindInfo.UnwindCode[0], &unwindinfo->unwindInfo.UnwindCode[MONO_MAX_UNWIND_CODES-codecount],
+ sizeof (UNWIND_CODE) * unwindinfo->unwindInfo.CountOfCodes);
+ }
+
+ g_free (unwindinfo);
+ *monoui = 0;
+
+ RtlAddFunctionTable (&targetinfo->runtimeFunction, 1, (DWORD64)code);
+}
+
+#endif
+
+
+
projects / mono.git / blobdiff