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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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567ed9419a
As this file is now detecting mips64/Cavium boards, we are renaming it to reflect that. The functional change is that mips_features now can detect Cavium board and allow Cavium-specific tests to be run. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13551
102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
// This file determines MIPS features a processor supports.
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//
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// We return:
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// - 0 if the machine matches the asked-for feature.
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// - 1 if the machine does not.
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// - 2 if the asked-for feature isn't recognised (this will be the case for
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// any feature if run on a non-MIPS machine).
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// - 3 if there was a usage error (it also prints an error message).
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#define FEATURE_PRESENT 0
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#define FEATURE_NOT_PRESENT 1
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#define UNRECOGNISED_FEATURE 2
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#define USAGE_ERROR 3
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#if defined(VGA_mips32) || defined(VGA_mips64)
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static int mipsCPUInfo(const char *search_string) {
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const char *file_name = "/proc/cpuinfo";
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/* Simple detection of MIPS DSP ASE at runtime for Linux.
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* It is based on /proc/cpuinfo, which reveals hardware configuration
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* to user-space applications. */
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char cpuinfo_line[256];
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FILE *f = NULL;
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if ((f = fopen (file_name, "r")) == NULL)
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return 0;
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while (fgets (cpuinfo_line, sizeof (cpuinfo_line), f) != NULL)
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{
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if (strstr (cpuinfo_line, search_string) != NULL)
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{
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fclose (f);
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return 1;
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}
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}
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fclose (f);
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/* Did not find string in the /proc/cpuinfo file. */
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return 0;
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}
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static int go(char *feature)
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{
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int cpuinfo;
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if ( (strcmp(feature, "mips32-dsp") == 0)) {
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const char *dsp = "dsp";
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cpuinfo = mipsCPUInfo(dsp);
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if (cpuinfo == 1) {
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return FEATURE_PRESENT;
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} else{
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return FEATURE_NOT_PRESENT;
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}
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} else if ((strcmp(feature, "mips32-dspr2") == 0)) {
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const char *dsp2 = "dsp2";
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cpuinfo = mipsCPUInfo(dsp2);
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if (cpuinfo == 1) {
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return FEATURE_PRESENT;
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} else{
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return FEATURE_NOT_PRESENT;
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}
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} else if ((strcmp(feature, "cavium-octeon") == 0)) {
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const char *cavium = "Cavium Octeon";
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cpuinfo = mipsCPUInfo(cavium);
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if (cpuinfo == 1) {
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return FEATURE_PRESENT;
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} else{
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return FEATURE_NOT_PRESENT;
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}
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} else {
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return UNRECOGNISED_FEATURE;
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}
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}
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#else
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static int go(char *feature)
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{
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/* Feature is not recognised. (non-MIPS machine!) */
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return UNRECOGNISED_FEATURE;
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}
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#endif
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//---------------------------------------------------------------------------
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// main
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//---------------------------------------------------------------------------
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int main(int argc, char **argv)
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{
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if (argc != 2) {
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fprintf( stderr, "usage: mips_features <feature>\n" );
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exit(USAGE_ERROR);
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}
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return go(argv[1]);
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}
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