1 files changed, 125 insertions, 0 deletions
diff --git a/libipt/internal/include/pt_encoder.h b/libipt/internal/include/pt_encoder.h
new file mode 100644
index 000000000000..f1b338e80848
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+++ b/libipt/internal/include/pt_encoder.h
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2014-2019, Intel Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *  * Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef PT_ENCODER_H
+#define PT_ENCODER_H
+
+#include "intel-pt.h"
+
+
+/* An Intel PT packet encoder. */
+struct pt_encoder {
+	/* The encoder configuration. */
+	struct pt_config config;
+
+	/** The current position in the trace buffer. */
+	uint8_t *pos;
+};
+
+
+/* Initialize the packet encoder.
+ *
+ * Returns zero on success, a negative error code otherwise.
+ */
+extern int pt_encoder_init(struct pt_encoder *, const struct pt_config *);
+
+/* Finalize the packet encoder. */
+extern void pt_encoder_fini(struct pt_encoder *);
+
+
+/* The below functions are convenience wrappers around pt_enc_next(). */
+
+/* Encode a Padding (pad) packet. */
+extern int pt_encode_pad(struct pt_encoder *);
+
+/* Encode a Packet Stream Boundary (psb) packet. */
+extern int pt_encode_psb(struct pt_encoder *);
+
+/* Encode an End PSB (psbend) packet. */
+extern int pt_encode_psbend(struct pt_encoder *);
+
+/* Encode a Target Instruction Pointer (tip) packet. */
+extern int pt_encode_tip(struct pt_encoder *, uint64_t ip,
+			 enum pt_ip_compression ipc);
+
+/* Encode a Taken Not Taken (tnt) packet - 8-bit version. */
+extern int pt_encode_tnt_8(struct pt_encoder *, uint8_t tnt, int size);
+
+/* Encode a Taken Not Taken (tnt) packet - 64-bit version. */
+extern int pt_encode_tnt_64(struct pt_encoder *, uint64_t tnt, int size);
+
+/* Encode a Packet Generation Enable (tip.pge) packet. */
+extern int pt_encode_tip_pge(struct pt_encoder *, uint64_t ip,
+			     enum pt_ip_compression ipc);
+
+/* Encode a Packet Generation Disable (tip.pgd) packet. */
+extern int pt_encode_tip_pgd(struct pt_encoder *, uint64_t ip,
+			     enum pt_ip_compression ipc);
+
+/* Encode a Flow Update Packet (fup). */
+extern int pt_encode_fup(struct pt_encoder *, uint64_t ip,
+			 enum pt_ip_compression ipc);
+
+/* Encode a Paging Information Packet (pip). */
+extern int pt_encode_pip(struct pt_encoder *, uint64_t cr3, uint8_t flags);
+
+/* Encode a Overflow Packet (ovf). */
+extern int pt_encode_ovf(struct pt_encoder *);
+
+/* Encode a Mode Exec Packet (mode.exec). */
+extern int pt_encode_mode_exec(struct pt_encoder *, enum pt_exec_mode);
+
+/* Encode a Mode Tsx Packet (mode.tsx). */
+extern int pt_encode_mode_tsx(struct pt_encoder *, uint8_t);
+
+/* Encode a Time Stamp Counter (tsc) packet. */
+extern int pt_encode_tsc(struct pt_encoder *, uint64_t);
+
+/* Encode a Core Bus Ratio (cbr) packet. */
+extern int pt_encode_cbr(struct pt_encoder *, uint8_t);
+
+/* Encode a TSC/MTC Alignment (tma) packet. */
+extern int pt_encode_tma(struct pt_encoder *, uint16_t ctc,
+				   uint16_t fc);
+
+/* Encode a Mini Time Counter (mtc) packet. */
+extern int pt_encode_mtc(struct pt_encoder *, uint8_t ctc);
+
+/* Encode a Cycle Count (cyc) packet. */
+extern int pt_encode_cyc(struct pt_encoder *, uint32_t cyc);
+
+/* Encode a TraceStop Packet (stop). */
+extern int pt_encode_stop(struct pt_encoder *);
+
+/* Encode a VMCS packet. */
+extern int pt_encode_vmcs(struct pt_encoder *, uint64_t);
+
+/* Encode a Maintenance (mnt) packet. */
+extern int pt_encode_mnt(struct pt_encoder *, uint64_t);
+
+#endif /* PT_ENCODER_H */