Changes in libcfa/src/concurrency/CtxSwitch-x86_64.S [0c4a90d:09f357ec]

File:

• libcfa/src/concurrency/CtxSwitch-x86_64.S (modified) (3 diffs)

libcfa/src/concurrency/CtxSwitch-x86_64.S

@@ -7 +7 @@
 // CtxSwitch-x86_64.S --
 //
-// Author           : Peter A. Buhr
-// Created On       : Mon Aug 10 08:10:26 2020
+// Author           : Thierry Delisle
+// Created On       : Mon Nov 28 12:27:26 2016
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Sat Oct 24 14:36:25 2020
-// Update Count     : 10
+// Last Modified On : Fri Jul 21 22:28:11 2017
+// Update Count     : 1
+//
+// This  library is free  software; you  can redistribute  it and/or  modify it
+// under the terms of the GNU Lesser General Public License as published by the
+// Free Software  Foundation; either  version 2.1 of  the License, or  (at your
+// option) any later version.
+//
+// This library is distributed in the  hope that it will be useful, but WITHOUT
+// ANY  WARRANTY;  without even  the  implied  warranty  of MERCHANTABILITY  or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
+// for more details.
+//
+// You should  have received a  copy of the  GNU Lesser General  Public License
+// along  with this library.
 //
 
-// The context switch routine requires the initial the stack of a thread to
-// look like the thread has saved its context in the normal manner.
+// This context switch routine depends on the fact that the stack of a new
+// thread has been set up to look like the thread has saved its context in
+// the normal manner.
+//
+// void CtxSwitch( machine_context *from, machine_context *to );
 
-// Offsets must synchronized with the __stack_context_t in invoke.h.
+// Offsets in the context structure. This needs to be synchronized with the
+// high level code a little better.
 
 #define PTR_BYTE        8
@@ -23 +40 @@
 #define FP_OFFSET       ( 1 * PTR_BYTE )
 
-// Context switch between coroutines/tasks.
-//   void __cfactx_switch( struct __stack_context_t * from, struct __stack_context_t * to ) ;
-// Arguments "from" in register rdi, "to" in register rsi.
-
-        .file "CtxSwitch-x86_64.S"
+//-----------------------------------------------------------------------------
+// Regular context switch routine which enables switching from one context to anouther
         .text
         .align 2
-        .global __cfactx_switch
-        .type __cfactx_switch, @function
-__cfactx_switch:
+        .globl CtxSwitch
+        .type  CtxSwitch, @function
+CtxSwitch:
 
         // Save volatile registers on the stack.
@@ -63 +77 @@
 
         ret
-        .size __cfactx_switch, .-__cfactx_switch
+        .size  CtxSwitch, .-CtxSwitch
 
-// Stub to create new stacks which can be context switched to
-//   void __cfactx_invoke_stub( void );
-
+//-----------------------------------------------------------------------------
+// Stub used to create new stacks which are ready to be context switched to
         .text
         .align 2
-        .global __cfactx_invoke_stub
-        .type __cfactx_invoke_stub, @function
-__cfactx_invoke_stub:
-        movq %rbx, %rdi                                         // move main and this to first two arguments
+        .globl CtxInvokeStub
+        .type    CtxInvokeStub, @function
+CtxInvokeStub:
+        movq %rbx, %rdi
         movq %r12, %rsi
-        jmp *%r13                                                       // jmp to invoke
-        .size __cfactx_invoke_stub, .-__cfactx_invoke_stub
+        jmp *%r13
+        .size  CtxInvokeStub, .-CtxInvokeStub
 
 // Local Variables: //
-// mode: asm //
+// mode: c //
 // tab-width: 4 //
 // End: //