http://www.boost.org/LICENSE_1_0.txt)
*/
-/*****************************************************************************************
- * *
- * ----------------------------------------------------------------------------------- *
- * | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | *
- * ----------------------------------------------------------------------------------- *
- * | 0x0 | 0x4 | 0x8 | 0xc | 0x10 | 0x14 | 0x18 | 0x1c | *
- * ----------------------------------------------------------------------------------- *
- * | EDI | ESI | EBX | EBP | EIP | hidden | to | data | *
- * ----------------------------------------------------------------------------------- *
- * *
- *****************************************************************************************/
+/****************************************************************************************
+ * *
+ * ---------------------------------------------------------------------------------- *
+ * | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | *
+ * ---------------------------------------------------------------------------------- *
+ * | 0x0 | 0x4 | 0x8 | 0xc | 0x10 | 0x14 | 0x18 | 0x1c | *
+ * ---------------------------------------------------------------------------------- *
+ * | fc_mxcsr|fc_x87_cw| EDI | ESI | EBX | EBP | EIP | hidden | *
+ * ---------------------------------------------------------------------------------- *
+ * ---------------------------------------------------------------------------------- *
+ * | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | *
+ * ---------------------------------------------------------------------------------- *
+ * | 0x20 | 0x24 | | *
+ * ---------------------------------------------------------------------------------- *
+ * | to | data | | *
+ * ---------------------------------------------------------------------------------- *
+ * *
+ ****************************************************************************************/
.text
.globl jump_fcontext
.align 2
.type jump_fcontext,@function
jump_fcontext:
- pushl %ebp /* save EBP */
- pushl %ebx /* save EBX */
- pushl %esi /* save ESI */
- pushl %edi /* save EDI */
+ leal -0x18(%esp), %esp /* prepare stack */
- /* store fcontext_t in ECX */
+#if !defined(BOOST_USE_TSX)
+ stmxcsr (%esp) /* save MMX control- and status-word */
+ fnstcw 0x4(%esp) /* save x87 control-word */
+#endif
+
+ movl %edi, 0x8(%esp) /* save EDI */
+ movl %esi, 0xc(%esp) /* save ESI */
+ movl %ebx, 0x10(%esp) /* save EBX */
+ movl %ebp, 0x14(%esp) /* save EBP */
+
+ /* store ESP (pointing to context-data) in ECX */
movl %esp, %ecx
/* first arg of jump_fcontext() == fcontext to jump to */
- movl 0x18(%esp), %eax
+ movl 0x20(%esp), %eax
/* second arg of jump_fcontext() == data to be transferred */
- movl 0x1c(%esp), %edx
+ movl 0x24(%esp), %edx
/* restore ESP (pointing to context-data) from EAX */
movl %eax, %esp
/* address of returned transport_t */
- movl 0x14(%esp), %eax
+ movl 0x1c(%esp), %eax
/* return parent fcontext_t */
movl %ecx, (%eax)
/* return data */
movl %edx, 0x4(%eax)
- popl %edi /* restore EDI */
- popl %esi /* restore ESI */
- popl %ebx /* restore EBX */
- popl %ebp /* restore EBP */
+ movl 0x18(%esp), %ecx /* restore EIP */
+
+#if !defined(BOOST_USE_TSX)
+ ldmxcsr (%esp) /* restore MMX control- and status-word */
+ fldcw 0x4(%esp) /* restore x87 control-word */
+#endif
+
+ movl 0x8(%esp), %edi /* restore EDI */
+ movl 0xc(%esp), %esi /* restore ESI */
+ movl 0x10(%esp), %ebx /* restore EBX */
+ movl 0x14(%esp), %ebp /* restore EBP */
+
+ leal 0x20(%esp), %esp /* prepare stack */
/* jump to context */
- ret $4
+ jmp *%ecx
.size jump_fcontext,.-jump_fcontext
/* Mark that we don't need executable stack. */