1 files changed, 131 insertions, 0 deletions
diff --git a/src/spu.c b/src/spu.c
new file mode 100644
index 000000000..fc9dd6356
--- /dev/null
+++ b/src/spu.c
@@ -0,0 +1,131 @@
+/*
+ * PowerPC SPU-specific syscalls decoders.
+ *
+ * Copyright (c) 2018-2022 Eugene Syromyatnikov <evgsyr@gmail.com>
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include "defs.h"
+
+#if defined POWERPC || defined POWERPC64
+
+# include "xstring.h"
+
+/* defined in arch/powerpc/include/asm/spu.h */
+# include "xlat/spu_create_flags.h"
+# include "xlat/spu_run_events.h"
+# include "xlat/spu_run_status_flags.h"
+
+SYS_FUNC(spu_create)
+{
+	kernel_ulong_t pathname = tcp->u_arg[0];
+	unsigned int flags = tcp->u_arg[1];
+	unsigned short mode = tcp->u_arg[2];
+	int neighbor_fd = tcp->u_arg[3];
+
+	/* pathname */
+	printpath(tcp, pathname);
+
+	/* flags */
+	tprint_arg_next();
+	printflags_ex(flags, "SPU_CREATE_???",
+		      xlat_verbose(xlat_verbosity) == XLAT_STYLE_RAW
+			? XLAT_STYLE_RAW : XLAT_STYLE_VERBOSE,
+		      spu_create_flags, NULL);
+
+	/* mode */
+	tprint_arg_next();
+	print_numeric_umode_t(mode);
+
+	/* neighbor_fd */
+	if (flags & SPU_CREATE_AFFINITY_SPU) {
+		tprint_arg_next();
+		printfd(tcp, neighbor_fd);
+	}
+
+	return RVAL_DECODED | RVAL_FD;
+}
+
+static const char *
+sprint_spu_status(unsigned long status)
+{
+	enum {
+		SPU_STOP_STATUS_SHIFT = 16,
+		SPU_STOP_STATUS_MASK  = 0x3fff,
+
+		SPU_STATUS_MASK       = (1 << SPU_STOP_STATUS_SHIFT) - 1,
+		SPU_STOP_MASK_SHIFTED = SPU_STOP_STATUS_MASK
+					<< SPU_STOP_STATUS_SHIFT,
+	};
+
+	static char outstr[spu_run_status_flags_flags_strsz
+			   + sizeof("|0x3fff<<SPU_STOP_STATUS_SHIFT|")
+			   + sizeof(status) * 2 + 2];
+
+	const unsigned long st = status & spu_run_status_flags->flags_mask;
+	unsigned long stop = 0;
+	const char *flags;
+	char *p = outstr;
+
+	flags = sprintflags_ex("", spu_run_status_flags, status, '\0',
+			       XLAT_STYLE_DEFAULT | SPFF_AUXSTR_MODE);
+
+	if (!flags && !(status - st))
+		return NULL;
+
+	if (flags)
+		p = xappendstr(outstr, p, "%s|", flags);
+
+	if (st & SPU_STATUS_STOPPED_BY_STOP) {
+		stop = status & SPU_STOP_MASK_SHIFTED;
+		p = xappendstr(outstr, p, "|%#lx<<SPU_STOP_STATUS_SHIFT",
+			       stop >> SPU_STOP_STATUS_SHIFT);
+	}
+
+	if (status - st - stop)
+		p = xappendstr(outstr, p, "|%#lx", status - st - stop);
+
+	return outstr;
+}
+
+SYS_FUNC(spu_run)
+{
+	uint32_t val;
+
+	if (entering(tcp)) {
+		/* fd */
+		printfd(tcp, tcp->u_arg[0]);
+
+		/* [in, out] uint32_t *npc */
+		tprint_arg_next();
+		if (printnum_int(tcp, tcp->u_arg[1], "%#x"))
+			set_tcb_priv_ulong(tcp, 1);
+
+		return 0;
+	}
+
+	if (!syserror(tcp) && get_tcb_priv_ulong(tcp)) {
+		tprint_value_changed();
+		printnum_int(tcp, tcp->u_arg[1], "%#x");
+	}
+
+	/* [out] uint32_t *event */
+	tprint_arg_next();
+	if (!umove_or_printaddr(tcp, tcp->u_arg[2], &val)) {
+		tprint_indirect_begin();
+		printflags_ex(val, "SPE_EVENT_???",
+			      xlat_verbose(xlat_verbosity) == XLAT_STYLE_RAW
+				? XLAT_STYLE_RAW : XLAT_STYLE_VERBOSE,
+			      spu_run_events, NULL);
+		tprint_indirect_end();
+	}
+
+	if (!syserror(tcp))
+		tcp->auxstr = sprint_spu_status(tcp->u_rval);
+
+	return RVAL_HEX | RVAL_STR;
+}
+
+#endif /* POWERPC || POWERPC64 */