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Fix some problems with macros by kristjanvalur · Pull Request #3 · stackless-dev/stackman · GitHub

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Fix some problems with macros #3

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Merged
kristjanvalur merged 1 commit into from
Dec 27, 2020
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Fix some problems with macros #3

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3 changes: 2 additions & 1 deletion Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,8 @@ lib:

clean:
rm -f src/*.o tests/*.o
rm -f bin/* tmp
rm -f bin/*
rm -rf tmp

DEBUG = #-DDEBUG_DUMP

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4 changes: 2 additions & 2 deletions src/stackman.h
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Expand Up @@ -72,7 +72,7 @@
#define STACKMAN_SP_ALIGN_UP(a) (((intptr_t)((a)+STACKMAN_STACK_ALIGN-1) & ~(STACKMAN_STACK_ALIGN-1)))

#if STACKMAN_STACK_DIR == 0
#define STACKMAN_SP_FURTHEST ((void*) ^(intptr_t)-1)
#define STACKMAN_SP_FURTHEST ((void*) (intptr_t) -STACKMAN_STACK_ALIGN)
#define STACKMAN_SP_NEAREST ((void*) 0)
#define STACKMAN_SP_LS(a, b) ((void*)(a) < (void*)(b)) /* to compare stack position */
#define STACKMAN_SP_LE(a, b) ((void*)(a) <= (void*)(b)) /* to compare stack position */
Expand All @@ -82,7 +82,7 @@
#else
/* upwards growing stacks */
#define STACKMAN_SP_FURTHEST ((void*) 0)
#define STACKMAN_SP_NEAREST ((void*) ^(intptr_t)-1)
#define STACKMAN_SP_NEAREST ((void*) (intptr_t) -STACKMAN_STACK_ALIGN)
#define STACKMAN_SP_LS(a, b) ((void*)(a) > (void*)(b)) /* to compare stack position */
#define STACKMAN_SP_LE(a, b) ((void*)(a) >= (void*)(b)) /* to compare stack position */
#define STACKMAN_SP_ADD(a, b) ((a) - (b)) /* to add offset to stack pointer */
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20 changes: 20 additions & 0 deletions tests/test.c
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Expand Up @@ -254,6 +254,24 @@ void test_04(void)

#endif

/* Test our various macros */
void test_05()
{

int local=0;
void *away = STACKMAN_SP_FURTHEST;
void *close = STACKMAN_SP_NEAREST;
assert(STACKMAN_SP_LE(&local, away));
assert(STACKMAN_SP_LS(&local, away));
assert(STACKMAN_SP_LE(close, &local));
assert(STACKMAN_SP_LS(close, &local));

assert(STACKMAN_SP_LE(&local, &local));
assert(!STACKMAN_SP_LS(&local, &local));

assert((void*)STACKMAN_SP_ALIGN(away) == away);

}

int main(int argc, char*argv[])
{
Expand All @@ -269,5 +287,7 @@ int main(int argc, char*argv[])
test_04();
printf("test_04 ok\n");
#endif
test_05();
printf("test_05 ok\n");
return 0;
}
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