Switch to Microsoft VS2015 MSVC toolchain for Windows x64 AOT compiler.

[mono.git] / mono / mini / exceptions-x86.c

diff --git a/mono/mini/exceptions-x86.c b/mono/mini/exceptions-x86.c
index 5811210cabeb51ef59b2ab5c8c7de078de06e1ac..89985dea268e77879fc27c9912f14447820ff083 100644 (file)
--- a/mono/mini/exceptions-x86.c
+++ b/mono/mini/exceptions-x86.c
@@ -536,7 +536,7 @@ mono_x86_resume_unwind (mgreg_t *regs, MonoObject *exc,
 static guint8*
 get_throw_trampoline (const char *name, gboolean rethrow, gboolean llvm, gboolean corlib, gboolean llvm_abs, gboolean resume_unwind, MonoTrampInfo **info, gboolean aot)
 {
-       guint8 *start, *code;
+       guint8 *start, *code, *labels [16];
        int i, stack_size, stack_offset, arg_offsets [5], regs_offset;
        MonoJumpInfo *ji = NULL;
        GSList *unwind_ops = NULL;
@@ -605,6 +605,18 @@ get_throw_trampoline (const char *name, gboolean rethrow, gboolean llvm, gboolea
        x86_lea_membase (code, X86_EAX, X86_ESP, stack_offset);
        x86_mov_membase_reg (code, X86_ESP, regs_offset + (X86_ESP * 4), X86_EAX, 4);
 
+       /* Clear fp stack */
+       labels [0] = code;
+       x86_fnstsw (code);
+       x86_shift_reg_imm (code, X86_SHR, X86_EAX, 11);
+       x86_alu_reg_imm (code, X86_AND, X86_EAX, 7);
+       x86_alu_reg_imm (code, X86_CMP, X86_EAX, 0);
+       labels [1] = code;
+       x86_branch8 (code, X86_CC_EQ, 0, FALSE);
+       x86_fstp (code, 0);
+       x86_jump_code (code, labels [0]);
+       mono_x86_patch (labels [1], code);
+
        /* Set arg1 == regs */
        x86_lea_membase (code, X86_EAX, X86_ESP, regs_offset);
        x86_mov_membase_reg (code, X86_ESP, arg_offsets [0], X86_EAX, 4);
@@ -1145,8 +1157,10 @@ mono_tasklets_arch_restore (void)
        /* the signature is: restore (MonoContinuation *cont, int state, MonoLMF **lmf_addr) */
        /* put cont in edx */
        x86_mov_reg_membase (code, X86_EDX, X86_ESP, 4, 4);
-        /* state in eax, so it's setup as the return value */
-        x86_mov_reg_membase (code, X86_EAX, X86_ESP, 8, 4);
+       /* state in eax, so it's setup as the return value */
+       x86_mov_reg_membase (code, X86_EAX, X86_ESP, 8, 4);
+       /* lmf_addr in ebx */
+       x86_mov_reg_membase(code, X86_EBX, X86_ESP, 0x0C, 4);
 
        /* setup the copy of the stack */
        x86_mov_reg_membase (code, X86_ECX, X86_EDX, MONO_STRUCT_OFFSET (MonoContinuation, stack_used_size), 4);
@@ -1159,10 +1173,8 @@ mono_tasklets_arch_restore (void)
 
        /* now restore the registers from the LMF */
        x86_mov_reg_membase (code, X86_ECX, X86_EDX, MONO_STRUCT_OFFSET (MonoContinuation, lmf), 4);
-       x86_mov_reg_membase (code, X86_EBX, X86_ECX, MONO_STRUCT_OFFSET (MonoLMF, ebx), 4);
        x86_mov_reg_membase (code, X86_EBP, X86_ECX, MONO_STRUCT_OFFSET (MonoLMF, ebp), 4);
-       x86_mov_reg_membase (code, X86_ESI, X86_ECX, MONO_STRUCT_OFFSET (MonoLMF, esi), 4);
-       x86_mov_reg_membase (code, X86_EDI, X86_ECX, MONO_STRUCT_OFFSET (MonoLMF, edi), 4);
+       x86_mov_reg_membase (code, X86_ESP, X86_ECX, MONO_STRUCT_OFFSET (MonoLMF, esp), 4);
 
        /* restore the lmf chain */
        /*x86_mov_reg_membase (code, X86_ECX, X86_ESP, 12, 4);