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Added a test for swapcontext and friends

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ptitSeb 2019-11-16 13:55:46 +01:00
parent 577c5ac45b
commit 11c374a4b3
4 changed files with 68 additions and 1 deletions
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5
CMakeLists.txt
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@ -306,6 +306,11 @@ add_test(test12 ${CMAKE_COMMAND} -D TEST_PROGRAM=${CMAKE_BINARY_DIR}/${BOX86}
-D TEST_REFERENCE=${CMAKE_SOURCE_DIR}/tests/ref12.txt
-P ${CMAKE_SOURCE_DIR}/runTest.cmake )
add_test(test13 ${CMAKE_COMMAND} -D TEST_PROGRAM=${CMAKE_BINARY_DIR}/${BOX86}
-D TEST_ARGS=${CMAKE_SOURCE_DIR}/tests/test13 -D TEST_OUTPUT=tmpfile.txt
-D TEST_REFERENCE=${CMAKE_SOURCE_DIR}/tests/ref13.txt
-P ${CMAKE_SOURCE_DIR}/runTest.cmake )
file(GLOB extension_tests "${CMAKE_SOURCE_DIR}/tests/extensions/*.c")
foreach(file ${extension_tests})
get_filename_component(testname "${file}" NAME_WE)

8
tests/ref13.txt Normal file
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@ -0,0 +1,8 @@
main: swapcontext(&uctx_main, &uctx_func2)
func2: started (1, 2)
func2: swapcontext(&uctx_func2, &uctx_func1)
func1: started
func1: swapcontext(&uctx_func1, &uctx_func2)
func2: returning
func1: returning
main: exiting

BIN
tests/test13 Executable file
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54
tests/test13.c Normal file
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@ -0,0 +1,54 @@
#include <ucontext.h>
#include <stdio.h>
#include <stdlib.h>
static ucontext_t uctx_main, uctx_func1, uctx_func2;
#define handle_error(msg) \
do { perror(msg); exit(EXIT_FAILURE); } while (0)
static void func1(void)
{
printf("func1: started\n");
printf("func1: swapcontext(&uctx_func1, &uctx_func2)\n");
if (swapcontext(&uctx_func1, &uctx_func2) == -1)
handle_error("swapcontext");
printf("func1: returning\n");
}
static void func2(int a, int b)
{
printf("func2: started (%d, %d)\n", a, b);
printf("func2: swapcontext(&uctx_func2, &uctx_func1)\n");
if (swapcontext(&uctx_func2, &uctx_func1) == -1)
handle_error("swapcontext");
printf("func2: returning\n");
}
int main(int argc, char *argv[])
{
char func1_stack[16384];
char func2_stack[16384];
if (getcontext(&uctx_func1) == -1)
handle_error("getcontext");
uctx_func1.uc_stack.ss_sp = func1_stack;
uctx_func1.uc_stack.ss_size = sizeof(func1_stack);
uctx_func1.uc_link = &uctx_main;
makecontext(&uctx_func1, func1, 0);
if (getcontext(&uctx_func2) == -1)
handle_error("getcontext");
uctx_func2.uc_stack.ss_sp = func2_stack;
uctx_func2.uc_stack.ss_size = sizeof(func2_stack);
/* Successor context is f1(), unless argc > 1 */
uctx_func2.uc_link = (argc > 1) ? NULL : &uctx_func1;
makecontext(&uctx_func2, func2, 2, 1, 2);
printf("main: swapcontext(&uctx_main, &uctx_func2)\n");
if (swapcontext(&uctx_main, &uctx_func2) == -1)
handle_error("swapcontext");
printf("main: exiting\n");
exit(EXIT_SUCCESS);
}