diff options
Diffstat (limited to 'arch/alpha/pseudo_inst.cc')
| -rw-r--r-- | arch/alpha/pseudo_inst.cc | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/alpha/pseudo_inst.cc b/arch/alpha/pseudo_inst.cc index f4201ab09..e23dc8baa 100644 --- a/arch/alpha/pseudo_inst.cc +++ b/arch/alpha/pseudo_inst.cc @@ -26,15 +26,20 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#include <fcntl.h> +#include <cstdio> #include <string> #include "arch/alpha/pseudo_inst.hh" +#include "arch/alpha/vtophys.hh" +#include "cpu/base_cpu.hh" #include "cpu/exec_context.hh" #include "sim/param.hh" #include "sim/serialize.hh" #include "sim/sim_exit.hh" #include "sim/stat_control.hh" #include "sim/stats.hh" +#include "sim/system.hh" using namespace std; using namespace Stats; @@ -149,6 +154,43 @@ namespace AlphaPseudo Checkpoint::setup(when, repeat); } + void + readfile(ExecContext *xc) + { + const string &file = xc->cpu->system->readfile; + if (file.empty()) { + xc->regs.intRegFile[0] = ULL(0); + return; + } + + Addr vaddr = xc->regs.intRegFile[16]; + uint64_t len = xc->regs.intRegFile[17]; + uint64_t offset = xc->regs.intRegFile[18]; + uint64_t result = 0; + + int fd = ::open(file.c_str(), O_RDONLY, 0); + if (fd < 0) + panic("could not open file %s\n", file); + + char *buf = new char[len]; + char *p = buf; + while (len > 0) { + int bytes = ::pread(fd, p, len, offset); + if (bytes <= 0) + break; + + p += bytes; + offset += bytes; + result += bytes; + len -= bytes; + } + + close(fd); + CopyIn(xc, vaddr, buf, result); + delete [] buf; + xc->regs.intRegFile[0] = result; + } + class Context : public ParamContext { public: |