Changeset b158d8f for src/libcfa/concurrency

Timestamp:

Jan 23, 2018, 5:02:46 PM (8 years ago)

Author:

Alan Kennedy <afakenne@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, pthread-emulation, qualifiedEnum, resolv-new, with_gc

Children:

b6838214

Parents:

6ba16fa

Message:

add context switch for ARM

Location:

src/libcfa/concurrency

Files:

• invoke.c (modified) (2 diffs)
• invoke.h (modified) (2 diffs)
• kernel.c (modified) (2 diffs)
• preemption.c (modified) (4 diffs)

src/libcfa/concurrency/invoke.c

@@ -10 +10 @@
 // Created On       : Tue Jan 17 12:27:26 2016
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Fri Jul 21 22:28:33 2017
-// Update Count     : 1
+// Last Modified On : Tue Jan 23 14:04:56 2018
+// Update Count     : 2
 //
 
@@ -133 +133 @@
         ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->mxcr = 0x1F80; //Vol. 2A 3-520
         ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->fcw = 0x037F;  //Vol. 1 8-7
+
+#elif defined( __ARM_ARCH )
+
+        struct FakeStack {
+                float fpRegs[16];                       // floating point registers
+                void *intRegs[9];                       // integer/pointer registers
+                void *arg[2];                           // placeholder for this pointer
+        };
+
+        ((struct machine_context_t *)stack->context)->SP = (char *)stack->base - sizeof( struct FakeStack );
+        ((struct machine_context_t *)stack->context)->FP = NULL;
+
+        struct FakeStack *fs = (struct FakeStack *)((struct machine_context_t *)stack->context)->SP;
+
+        fs->intRegs[8] = CtxInvokeStub;
+        fs->arg[0] = this;
+        fs->arg[1] = invoke;
 #else
         #error Only __i386__ and __x86_64__ is supported for threads in cfa

src/libcfa/concurrency/invoke.h

@@ -10 +10 @@
 // Created On       : Tue Jan 17 12:27:26 2016
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Fri Jul 21 22:28:56 2017
-// Update Count     : 1
+// Last Modified On : Tue Jan 23 14:55:46 2018
+// Update Count     : 3
 //
 
@@ -203 +203 @@
                         "movl %%ebp,%1\n"   \
                 : "=rm" (ctx.SP), "=rm" (ctx.FP) )
+        #elif defined( __ARM_ARCH )
+        #define CtxGet( ctx ) __asm__ ( \
+                        "mov %0,%%sp\n"   \
+                        "mov %1,%%r11\n"   \
+                : "=rm" (ctx.SP), "=rm" (ctx.FP) )
         #endif
 

src/libcfa/concurrency/kernel.c

@@ -10 +10 @@
 // Created On       : Tue Jan 17 12:27:26 2017
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Fri Jul 21 22:33:18 2017
-// Update Count     : 2
+// Last Modified On : Fri Dec  8 16:23:33 2017
+// Update Count     : 3
 //
 
 //C Includes
 #include <stddef.h>
+#define ftype `ftype`
 extern "C" {
 #include <stdio.h>
@@ -23 +24 @@
 #include <unistd.h>
 }
+#undef ftype
 
 //CFA Includes

src/libcfa/concurrency/preemption.c

@@ -10 +10 @@
 // Created On       : Mon Jun 5 14:20:42 2017
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Fri Jul 21 22:36:05 2017
-// Update Count     : 2
+// Last Modified On : Tue Jan 23 13:56:32 2018
+// Update Count     : 6
 //
 
 #include "preemption.h"
 
+#define ftype `ftype`
 extern "C" {
 #include <errno.h>
@@ -26 +27 @@
 #include <unistd.h>
 }
-
+#undef ftype
 
 #ifdef __USE_STREAM__
@@ -60 +61 @@
 
 // Machine specific register name
-#ifdef __x86_64__
+#if   defined(__x86_64__)
 #define CFA_REG_IP REG_RIP
-#else
+#elif defined(__i386__)
 #define CFA_REG_IP REG_EIP
+#elif defined(__ARM_ARCH__)
+#define CFA_REG_IP REG_R15
 #endif
 
@@ -296 +299 @@
 // Receives SIGUSR1 signal and causes the current thread to yield
 void sigHandler_ctxSwitch( __CFA_SIGPARMS__ ) {
-        __cfaabi_dbg_debug_do( last_interrupt = (void *)(cxt->uc_mcontext.gregs[CFA_REG_IP]); )
+        __cfaabi_dbg_debug_do( last_interrupt = (void *)(cxt->uc_mcontext.arm_pc); )
 
         // Check if it is safe to preempt here