source: src/libcfa/concurrency/invoke.c @ d807ca28

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumwith_gc
Last change on this file since d807ca28 was afd550c, checked in by Thierry Delisle <tdelisle@…>, 6 years ago

Some more work on TLS macros

  • Property mode set to 100644
File size: 5.7 KB
RevLine 
[8def349]1//
2// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// invoke.c --
8//
9// Author           : Thierry Delisle
10// Created On       : Tue Jan 17 12:27:26 2016
[6b0b624]11// Last Modified By : Peter A. Buhr
[bede27b]12// Last Modified On : Fri Feb  9 16:37:42 2018
13// Update Count     : 5
[8def349]14//
[78b3f52]15
16#include <stdbool.h>
17#include <stdlib.h>
18#include <stdio.h>
19
20#include "invoke.h"
21
[5c81105]22#define __CFA_INVOKE_PRIVATE__
23#include "invoke.h"
[78b3f52]24
25// magically invoke the "main" of the most derived class
26// Called from the kernel when starting a coroutine or task so must switch back to user mode.
[5c81105]27
[0c92c9f]28extern void __suspend_internal(void);
[39fea2f]29extern void __leave_coroutine(void);
[b69ea6b]30extern void __finish_creation(void);
[1c273d0]31extern void __leave_thread_monitor( struct thread_desc * this );
[82ff5845]32extern void disable_interrupts();
[36982fc]33extern void enable_interrupts( __cfaabi_dbg_ctx_param );
[78b3f52]34
[b58a5772]35void CtxInvokeCoroutine(
[36982fc]36        void (*main)(void *),
37        struct coroutine_desc *(*get_coroutine)(void *),
38        void *this
[80d9e49]39) {
[36982fc]40        struct coroutine_desc* cor = get_coroutine( this );
[80d9e49]41
[36982fc]42        if(cor->state == Primed) {
43                __suspend_internal();
44        }
[80d9e49]45
[36982fc]46        cor->state = Active;
[78b3f52]47
[b69ea6b]48        enable_interrupts( __cfaabi_dbg_ctx );
49
[36982fc]50        main( this );
[78b3f52]51
[36982fc]52        cor->state = Halted;
[8118303]53
[36982fc]54        //Final suspend, should never return
55        __leave_coroutine();
[169d944]56        __cabi_abort( "Resumed dead coroutine" );
[8118303]57}
58
59void CtxInvokeThread(
[36982fc]60        void (*dtor)(void *),
61        void (*main)(void *),
62        struct thread_desc *(*get_thread)(void *),
63        void *this
[8118303]64) {
[36982fc]65        // First suspend, once the thread arrives here,
66        // the function pointer to main can be invalidated without risk
[b69ea6b]67        __finish_creation();
[36982fc]68
69        // Fetch the thread handle from the user defined thread structure
70        struct thread_desc* thrd = get_thread( this );
[afd550c]71        thrd->self_cor.last = NULL;
[36982fc]72
73        // Officially start the thread by enabling preemption
74        enable_interrupts( __cfaabi_dbg_ctx );
75
76        // Call the main of the thread
77        main( this );
78
79        // To exit a thread we must :
80        // 1 - Mark it as halted
81        // 2 - Leave its monitor
82        // 3 - Disable the interupts
83        // 4 - Final suspend
84        // The order of these 4 operations is very important
85        //Final suspend, should never return
86        __leave_thread_monitor( thrd );
[169d944]87        __cabi_abort( "Resumed dead thread" );
[78b3f52]88}
89
[5c81105]90
[b58a5772]91void CtxStart(
[36982fc]92        void (*main)(void *),
93        struct coroutine_desc *(*get_coroutine)(void *),
94        void *this,
95        void (*invoke)(void *)
[80d9e49]96) {
[36982fc]97        struct coStack_t* stack = &get_coroutine( this )->stack;
[78b3f52]98
[381fdee]99#if defined( __i386 )
[d9c44c3]100
101        struct FakeStack {
102            void *fixedRegisters[3];                    // fixed registers ebx, edi, esi (popped on 1st uSwitch, values unimportant)
[17af7d1]103            uint32_t mxcr;                        // SSE Status and Control bits (control bits are preserved across function calls)
[36982fc]104            uint16_t fcw;                         // X97 FPU control word (preserved across function calls)
[17af7d1]105            void *rturn;                          // where to go on return from uSwitch
[d9c44c3]106            void *dummyReturn;                          // fake return compiler would have pushed on call to uInvoke
[80d9e49]107            void *argument[3];                          // for 16-byte ABI, 16-byte alignment starts here
108            void *padding;                              // padding to force 16-byte alignment, as "base" is 16-byte aligned
[d9c44c3]109        };
110
111        ((struct machine_context_t *)stack->context)->SP = (char *)stack->base - sizeof( struct FakeStack );
112        ((struct machine_context_t *)stack->context)->FP = NULL;                // terminate stack with NULL fp
113
114        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->dummyReturn = NULL;
[80d9e49]115        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->argument[0] = this;     // argument to invoke
[d9c44c3]116        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->rturn = invoke;
[36982fc]117        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->mxcr = 0x1F80; //Vol. 2A 3-520
118        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->fcw = 0x037F;  //Vol. 1 8-7
[d9c44c3]119
[381fdee]120#elif defined( __x86_64 )
[d9c44c3]121
[36982fc]122        struct FakeStack {
123                void *fixedRegisters[5];            // fixed registers rbx, r12, r13, r14, r15
124                uint32_t mxcr;                      // SSE Status and Control bits (control bits are preserved across function calls)
125                uint16_t fcw;                       // X97 FPU control word (preserved across function calls)
126                void *rturn;                        // where to go on return from uSwitch
127                void *dummyReturn;                  // NULL return address to provide proper alignment
128        };
129
130        ((struct machine_context_t *)stack->context)->SP = (char *)stack->base - sizeof( struct FakeStack );
131        ((struct machine_context_t *)stack->context)->FP = NULL;                // terminate stack with NULL fp
132
133        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->dummyReturn = NULL;
134        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->rturn = CtxInvokeStub;
135        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->fixedRegisters[0] = this;
136        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->fixedRegisters[1] = invoke;
137        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->mxcr = 0x1F80; //Vol. 2A 3-520
138        ((struct FakeStack *)(((struct machine_context_t *)stack->context)->SP))->fcw = 0x037F;  //Vol. 1 8-7
[b158d8f]139
140#elif defined( __ARM_ARCH )
141
142        struct FakeStack {
143                float fpRegs[16];                       // floating point registers
144                void *intRegs[9];                       // integer/pointer registers
145                void *arg[2];                           // placeholder for this pointer
146        };
147
148        ((struct machine_context_t *)stack->context)->SP = (char *)stack->base - sizeof( struct FakeStack );
149        ((struct machine_context_t *)stack->context)->FP = NULL;
150
151        struct FakeStack *fs = (struct FakeStack *)((struct machine_context_t *)stack->context)->SP;
152
153        fs->intRegs[8] = CtxInvokeStub;
154        fs->arg[0] = this;
155        fs->arg[1] = invoke;
[381fdee]156
[d9c44c3]157#else
[381fdee]158        #error uknown hardware architecture
[d9c44c3]159#endif
[e4745d7a]160}
[6b0b624]161
162// Local Variables: //
163// mode: c //
164// tab-width: 4 //
165// End: //
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