103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
/*
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This program is part of the TACLeBench benchmark suite.
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Version V 1.x
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Name: fac
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Author: unknown
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Function: fac is a program to calculate factorials.
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This program computes the sum of the factorials
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from zero to five.
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Source: MRTC
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http://www.mrtc.mdh.se/projects/wcet/wcet_bench/fac/fac.c
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Changes: CS 2006/05/19: Changed loop bound from constant to variable.
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License: public domain
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*/
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/*
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Forward declaration of functions
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*/
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// Wasm loop bounds
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__attribute__((import_module("__pragma"), import_name("loopbound"))) extern void
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__pragma_loopbound(unsigned int min_bound, unsigned int max_bound);
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__attribute__((always_inline)) static inline int fac_fac(int n);
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__attribute__((always_inline)) static inline void fac_init();
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__attribute__((always_inline)) static inline int fac_return();
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__attribute__((noinline)) __attribute__((export_name("entrypoint")))
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__attribute__((noinline)) __attribute__((export_name("entrypoint"))) void
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fac_main();
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__attribute__((noinline)) __attribute__((export_name("main")))
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__attribute__((noinline)) __attribute__((export_name("main"))) int
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main(void);
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/*
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Declaration of global variables
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*/
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int fac_s;
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volatile int fac_n;
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/*
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Initialization- and return-value-related functions
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*/
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__attribute__((always_inline)) static inline void
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fac_init() {
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fac_s = 0;
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fac_n = 5;
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}
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__attribute__((always_inline)) static inline int
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fac_return() {
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int expected_result = 154;
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return fac_s - expected_result;
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}
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/*
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Arithmetic math functions
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*/
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__attribute__((always_inline)) static inline int
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fac_fac(int n) {
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if (n == 0)
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return 1;
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else
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return (n * fac_fac(n - 1));
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}
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/*
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Main functions
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*/
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__attribute__((noinline)) __attribute__((export_name("entrypoint")))
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__attribute__((noinline)) __attribute__((export_name("entrypoint"))) void
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fac_main() {
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int i;
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__pragma_loopbound(6, 6);
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for (i = 0; i <= fac_n; i++) {
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_Pragma("marker recursivecall") fac_s += fac_fac(i);
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_Pragma("flowrestriction 1*fac_fac <= 6*recursivecall")
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}
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}
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__attribute__((noinline)) __attribute__((export_name("main")))
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__attribute__((noinline)) __attribute__((export_name("main"))) int
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main(void) {
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fac_init();
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fac_main();
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return (fac_return());
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}
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