get:
Show a patch.

patch:
Update a patch.

put:
Update a patch.

GET /api/patches/810755/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 810755,
    "url": "http://patchwork.ozlabs.org/api/patches/810755/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/150472219643.24907.18130899263866950639.stgit@frigg.lan/",
    "project": {
        "id": 14,
        "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api",
        "name": "QEMU Development",
        "link_name": "qemu-devel",
        "list_id": "qemu-devel.nongnu.org",
        "list_email": "qemu-devel@nongnu.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": "",
        "list_archive_url": "",
        "list_archive_url_format": "",
        "commit_url_format": ""
    },
    "msgid": "<150472219643.24907.18130899263866950639.stgit@frigg.lan>",
    "list_archive_url": null,
    "date": "2017-09-06T18:23:16",
    "name": "[v4,15/20] trace: Introduce a proper structure to describe memory accesses",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "6f7d134a61b9a030a672afb3be60577b0c27e496",
    "submitter": {
        "id": 9099,
        "url": "http://patchwork.ozlabs.org/api/people/9099/?format=api",
        "name": "Lluís Vilanova",
        "email": "vilanova@ac.upc.edu"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/150472219643.24907.18130899263866950639.stgit@frigg.lan/mbox/",
    "series": [
        {
            "id": 1859,
            "url": "http://patchwork.ozlabs.org/api/series/1859/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=1859",
            "date": "2017-09-06T17:22:41",
            "name": "instrument: Add basic event instrumentation",
            "version": 4,
            "mbox": "http://patchwork.ozlabs.org/series/1859/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/810755/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/810755/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>",
        "X-Original-To": "incoming@patchwork.ozlabs.org",
        "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org",
        "Authentication-Results": "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=<UNKNOWN>)",
        "Received": [
            "from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xnX664GNDz9sRY\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu,  7 Sep 2017 04:23:58 +1000 (AEST)",
            "from localhost ([::1]:37422 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1dpezU-0006JF-Kh\n\tfor incoming@patchwork.ozlabs.org; Wed, 06 Sep 2017 14:23:56 -0400",
            "from eggs.gnu.org ([2001:4830:134:3::10]:51709)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <vilanova@ac.upc.edu>) id 1dpezA-0006Ix-6k\n\tfor qemu-devel@nongnu.org; Wed, 06 Sep 2017 14:23:38 -0400",
            "from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from <vilanova@ac.upc.edu>) id 1dpez4-000806-ST\n\tfor qemu-devel@nongnu.org; Wed, 06 Sep 2017 14:23:36 -0400",
            "from roura.ac.upc.es ([147.83.33.10]:50999)\n\tby eggs.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <vilanova@ac.upc.edu>) id 1dpez4-0007zk-D6\n\tfor qemu-devel@nongnu.org; Wed, 06 Sep 2017 14:23:30 -0400",
            "from correu-1.ac.upc.es (correu-1.ac.upc.es [147.83.30.91])\n\tby roura.ac.upc.es (8.13.8/8.13.8) with ESMTP id v86INNiT005145;\n\tWed, 6 Sep 2017 20:23:23 +0200",
            "from localhost (unknown [31.210.187.58])\n\tby correu-1.ac.upc.es (Postfix) with ESMTPSA id DC520355;\n\tWed,  6 Sep 2017 20:23:17 +0200 (CEST)"
        ],
        "From": "=?utf-8?b?TGx1w61z?= Vilanova <vilanova@ac.upc.edu>",
        "To": "qemu-devel@nongnu.org",
        "Date": "Wed,  6 Sep 2017 21:23:16 +0300",
        "Message-Id": "<150472219643.24907.18130899263866950639.stgit@frigg.lan>",
        "X-Mailer": "git-send-email 2.14.1",
        "In-Reply-To": "<150471856141.24907.274176769201097378.stgit@frigg.lan>",
        "References": "<150471856141.24907.274176769201097378.stgit@frigg.lan>",
        "User-Agent": "StGit/0.17.1-dirty",
        "MIME-Version": "1.0",
        "Content-Type": "text/plain; charset=\"utf-8\"",
        "Content-Transfer-Encoding": "quoted-printable",
        "X-MIME-Autoconverted": "from 8bit to quoted-printable by roura.ac.upc.es id\n\tv86INNiT005145",
        "X-detected-operating-system": "by eggs.gnu.org: GNU/Linux 2.6.x [fuzzy]",
        "X-Received-From": "147.83.33.10",
        "Subject": "[Qemu-devel] [PATCH v4 15/20] trace: Introduce a proper structure\n\tto describe memory accesses",
        "X-BeenThere": "qemu-devel@nongnu.org",
        "X-Mailman-Version": "2.1.21",
        "Precedence": "list",
        "List-Id": "<qemu-devel.nongnu.org>",
        "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>",
        "List-Archive": "<http://lists.nongnu.org/archive/html/qemu-devel/>",
        "List-Post": "<mailto:qemu-devel@nongnu.org>",
        "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>",
        "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>",
        "Cc": "Peter Crosthwaite <crosthwaite.peter@gmail.com>,\n\t\"Emilio G. Cota\" <cota@braap.org>,\n\tStefan Hajnoczi <stefanha@redhat.com>, \n\tPaolo Bonzini <pbonzini@redhat.com>, Richard Henderson <rth@twiddle.net>",
        "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org",
        "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>"
    },
    "content": "Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>\n---\n include/exec/cpu_ldst_template.h          |   15 ++++++--------\n include/exec/cpu_ldst_useronly_template.h |   15 ++++++--------\n tcg/tcg-op.c                              |   22 +++++++++++++--------\n trace/mem-internal.h                      |   22 ++++++++++++---------\n trace/mem.h                               |   31 +++++++++++++++++++++++++----\n 5 files changed, 66 insertions(+), 39 deletions(-)",
    "diff": "diff --git a/include/exec/cpu_ldst_template.h b/include/exec/cpu_ldst_template.h\nindex 4db2302962..debbabcfb2 100644\n--- a/include/exec/cpu_ldst_template.h\n+++ b/include/exec/cpu_ldst_template.h\n@@ -88,9 +88,8 @@ glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,\n     TCGMemOpIdx oi;\n \n #if !defined(SOFTMMU_CODE_ACCESS)\n-    trace_guest_mem_before_exec(\n-        ENV_GET_CPU(env), ptr,\n-        trace_mem_build_info(SHIFT, false, MO_TE, false));\n+    TraceMemInfo meminfo = trace_mem_build_info(SHIFT, false, MO_TE, false);\n+    trace_guest_mem_before_exec(ENV_GET_CPU(env), ptr, meminfo.raw);\n #endif\n \n     addr = ptr;\n@@ -126,9 +125,8 @@ glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,\n     TCGMemOpIdx oi;\n \n #if !defined(SOFTMMU_CODE_ACCESS)\n-    trace_guest_mem_before_exec(\n-        ENV_GET_CPU(env), ptr,\n-        trace_mem_build_info(SHIFT, true, MO_TE, false));\n+    TraceMemInfo meminfo = trace_mem_build_info(SHIFT, true, MO_TE, false);\n+    trace_guest_mem_before_exec(ENV_GET_CPU(env), ptr, meminfo.raw);\n #endif\n \n     addr = ptr;\n@@ -168,9 +166,8 @@ glue(glue(glue(cpu_st, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,\n     TCGMemOpIdx oi;\n \n #if !defined(SOFTMMU_CODE_ACCESS)\n-    trace_guest_mem_before_exec(\n-        ENV_GET_CPU(env), ptr,\n-        trace_mem_build_info(SHIFT, false, MO_TE, true));\n+    TraceMemInfo meminfo = trace_mem_build_info(SHIFT, false, MO_TE, true);\n+    trace_guest_mem_before_exec(ENV_GET_CPU(env), ptr, meminfo.raw);\n #endif\n \n     addr = ptr;\ndiff --git a/include/exec/cpu_ldst_useronly_template.h b/include/exec/cpu_ldst_useronly_template.h\nindex 7b8c7c506e..b0b3fc1b8d 100644\n--- a/include/exec/cpu_ldst_useronly_template.h\n+++ b/include/exec/cpu_ldst_useronly_template.h\n@@ -61,9 +61,8 @@ static inline RES_TYPE\n glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)\n {\n #if !defined(CODE_ACCESS)\n-    trace_guest_mem_before_exec(\n-        ENV_GET_CPU(env), ptr,\n-        trace_mem_build_info(DATA_SIZE, false, MO_TE, false));\n+    TraceMemInfo meminfo = trace_mem_build_info(DATA_SIZE, false, MO_TE, false);\n+    trace_guest_mem_before_exec(ENV_GET_CPU(env), ptr, meminfo.raw);\n #endif\n     return glue(glue(ld, USUFFIX), _p)(g2h(ptr));\n }\n@@ -81,9 +80,8 @@ static inline int\n glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)\n {\n #if !defined(CODE_ACCESS)\n-    trace_guest_mem_before_exec(\n-        ENV_GET_CPU(env), ptr,\n-        trace_mem_build_info(DATA_SIZE, true, MO_TE, false));\n+    TraceMemInfo meminfo = trace_mem_build_info(DATA_SIZE, true, MO_TE, false);\n+    trace_guest_mem_before_exec(ENV_GET_CPU(env), ptr, meminfo.raw);\n #endif\n     return glue(glue(lds, SUFFIX), _p)(g2h(ptr));\n }\n@@ -103,9 +101,8 @@ glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr,\n                                       RES_TYPE v)\n {\n #if !defined(CODE_ACCESS)\n-    trace_guest_mem_before_exec(\n-        ENV_GET_CPU(env), ptr,\n-        trace_mem_build_info(DATA_SIZE, false, MO_TE, true));\n+    TraceMemInfo meminfo = trace_mem_build_info(DATA_SIZE, false, MO_TE, true);\n+    trace_guest_mem_before_exec(ENV_GET_CPU(env), ptr, meminfo.raw);\n #endif\n     glue(glue(st, SUFFIX), _p)(g2h(ptr), v);\n }\ndiff --git a/tcg/tcg-op.c b/tcg/tcg-op.c\nindex 87f673ef49..234e300ede 100644\n--- a/tcg/tcg-op.c\n+++ b/tcg/tcg-op.c\n@@ -2664,22 +2664,26 @@ static void gen_ldst_i64(TCGOpcode opc, TCGv_i64 val, TCGv addr,\n \n void tcg_gen_qemu_ld_i32(TCGv_i32 val, TCGv addr, TCGArg idx, TCGMemOp memop)\n {\n+    TraceMemInfo meminfo;\n     memop = tcg_canonicalize_memop(memop, 0, 0);\n-    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,\n-                               addr, trace_mem_get_info(memop, 0));\n+    meminfo = trace_mem_get_info(memop, 0);\n+    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env, addr, meminfo.raw);\n     gen_ldst_i32(INDEX_op_qemu_ld_i32, val, addr, memop, idx);\n }\n \n void tcg_gen_qemu_st_i32(TCGv_i32 val, TCGv addr, TCGArg idx, TCGMemOp memop)\n {\n+    TraceMemInfo meminfo;\n     memop = tcg_canonicalize_memop(memop, 0, 1);\n-    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,\n-                               addr, trace_mem_get_info(memop, 1));\n+    meminfo = trace_mem_get_info(memop, 1);\n+    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env, addr, meminfo.raw);\n     gen_ldst_i32(INDEX_op_qemu_st_i32, val, addr, memop, idx);\n }\n \n void tcg_gen_qemu_ld_i64(TCGv_i64 val, TCGv addr, TCGArg idx, TCGMemOp memop)\n {\n+    TraceMemInfo meminfo;\n+\n     if (TCG_TARGET_REG_BITS == 32 && (memop & MO_SIZE) < MO_64) {\n         tcg_gen_qemu_ld_i32(TCGV_LOW(val), addr, idx, memop);\n         if (memop & MO_SIGN) {\n@@ -2691,21 +2695,23 @@ void tcg_gen_qemu_ld_i64(TCGv_i64 val, TCGv addr, TCGArg idx, TCGMemOp memop)\n     }\n \n     memop = tcg_canonicalize_memop(memop, 1, 0);\n-    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,\n-                               addr, trace_mem_get_info(memop, 0));\n+    meminfo = trace_mem_get_info(memop, 0);\n+    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env, addr, meminfo.raw);\n     gen_ldst_i64(INDEX_op_qemu_ld_i64, val, addr, memop, idx);\n }\n \n void tcg_gen_qemu_st_i64(TCGv_i64 val, TCGv addr, TCGArg idx, TCGMemOp memop)\n {\n+    TraceMemInfo meminfo;\n+\n     if (TCG_TARGET_REG_BITS == 32 && (memop & MO_SIZE) < MO_64) {\n         tcg_gen_qemu_st_i32(TCGV_LOW(val), addr, idx, memop);\n         return;\n     }\n \n     memop = tcg_canonicalize_memop(memop, 1, 1);\n-    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,\n-                               addr, trace_mem_get_info(memop, 1));\n+    meminfo = trace_mem_get_info(memop, 1);\n+    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env, addr, meminfo.raw);\n     gen_ldst_i64(INDEX_op_qemu_st_i64, val, addr, memop, idx);\n }\n \ndiff --git a/trace/mem-internal.h b/trace/mem-internal.h\nindex ddda934253..b77079527f 100644\n--- a/trace/mem-internal.h\n+++ b/trace/mem-internal.h\n@@ -1,7 +1,7 @@\n /*\n  * Helper functions for guest memory tracing\n  *\n- * Copyright (C) 2016 Lluís Vilanova <vilanova@ac.upc.edu>\n+ * Copyright (C) 2016-2017 Lluís Vilanova <vilanova@ac.upc.edu>\n  *\n  * This work is licensed under the terms of the GNU GPL, version 2 or later.\n  * See the COPYING file in the top-level directory.\n@@ -10,8 +10,9 @@\n #ifndef TRACE__MEM_INTERNAL_H\n #define TRACE__MEM_INTERNAL_H\n \n-static inline uint8_t trace_mem_get_info(TCGMemOp op, bool store)\n+static inline TraceMemInfo trace_mem_get_info(TCGMemOp op, bool store)\n {\n+    TraceMemInfo res_;\n     uint8_t res = op;\n     bool be = (op & MO_BSWAP) == MO_BE;\n \n@@ -27,19 +28,22 @@ static inline uint8_t trace_mem_get_info(TCGMemOp op, bool store)\n         res |= 1ULL << 4;\n     }\n \n-    return res;\n+    res_.raw = res;\n+    return res_;\n }\n \n-static inline uint8_t trace_mem_build_info(\n+static inline TraceMemInfo trace_mem_build_info(\n     TCGMemOp size, bool sign_extend, TCGMemOp endianness, bool store)\n {\n-    uint8_t res = 0;\n-    res |= size;\n-    res |= (sign_extend << 2);\n+    TraceMemInfo res;\n+    res.size_shift = size;\n+    res.sign_extend = sign_extend;\n     if (endianness == MO_BE) {\n-        res |= (1ULL << 3);\n+        res.endianness = 1;\n+    } else {\n+        res.endianness = 0;\n     }\n-    res |= (store << 4);\n+    res.store = store;\n     return res;\n }\n \ndiff --git a/trace/mem.h b/trace/mem.h\nindex 9c88bcb4e6..9866b41401 100644\n--- a/trace/mem.h\n+++ b/trace/mem.h\n@@ -1,7 +1,7 @@\n /*\n  * Helper functions for guest memory tracing\n  *\n- * Copyright (C) 2016 Lluís Vilanova <vilanova@ac.upc.edu>\n+ * Copyright (C) 2016-2017 Lluís Vilanova <vilanova@ac.upc.edu>\n  *\n  * This work is licensed under the terms of the GNU GPL, version 2 or later.\n  * See the COPYING file in the top-level directory.\n@@ -12,21 +12,44 @@\n \n #include \"tcg/tcg.h\"\n \n+/**\n+ * TraceMemInfo:\n+ * @size_shift: Memoy access size, interpreted as \"1 << size_shift\" bytes.\n+ * @sign_extend: Whether the access is sign-extended.\n+ * @endianness: Endinness type (0: little, 1: big).\n+ * @store: Whether it's a store operation.\n+ *\n+ * Memory access information.\n+ *\n+ * NOTE: Keep in sync with QIMemInfo.\n+ */\n+typedef struct TraceMemInfo {\n+    union {\n+        struct {\n+            uint8_t size_shift : 2;\n+            bool    sign_extend: 1;\n+            uint8_t endianness : 1;\n+            bool    store      : 1;\n+        };\n+        uint8_t raw;\n+    };\n+} TraceMemInfo;\n+\n \n /**\n  * trace_mem_get_info:\n  *\n  * Return a value for the 'info' argument in guest memory access traces.\n  */\n-static uint8_t trace_mem_get_info(TCGMemOp op, bool store);\n+static TraceMemInfo trace_mem_get_info(TCGMemOp op, bool store);\n \n /**\n  * trace_mem_build_info:\n  *\n  * Return a value for the 'info' argument in guest memory access traces.\n  */\n-static uint8_t trace_mem_build_info(TCGMemOp size, bool sign_extend,\n-                                    TCGMemOp endianness, bool store);\n+static TraceMemInfo trace_mem_build_info(TCGMemOp size, bool sign_extend,\n+                                         TCGMemOp endianness, bool store);\n \n \n #include \"trace/mem-internal.h\"\n",
    "prefixes": [
        "v4",
        "15/20"
    ]
}