From: Clement Leger <cleger@kalray.eu>
To: Ohad Ben-Cohen <ohad@wizery.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Jonathan Corbet <corbet@lwn.net>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
linux-remoteproc@vger.kernel.org
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Andy Gross <agross@kernel.org>,
Patrice Chotard <patrice.chotard@st.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org,
Arnaud Pouliquen <arnaud.pouliquen@st.com>,
Loic PALLARDY <loic.pallardy@st.com>, s-anna <s-anna@ti.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Clement Leger <cleger@kalray.eu>
Subject: [PATCH v5 4/8] remoteproc: Add elf helpers to access elf64 and elf32 fields
Date: Mon, 2 Mar 2020 10:38:58 +0100 [thread overview]
Message-ID: <20200302093902.27849-5-cleger@kalray.eu> (raw)
In-Reply-To: <20200302093902.27849-1-cleger@kalray.eu>
elf32 and elf64 mainly differ by their types. In order to avoid
copy/pasting the whole loader code, generate static inline functions
which will access values according to the elf class. It allows to
keep a common loader basis.
In order to accommodate both elf types sizes, the maximum size for a
elf header member is chosen using the maximum value of the field for
both elf class.
Signed-off-by: Clement Leger <cleger@kalray.eu>
---
drivers/remoteproc/remoteproc_elf_helpers.h | 96 +++++++++++++++++++++++++++++
1 file changed, 96 insertions(+)
create mode 100644 drivers/remoteproc/remoteproc_elf_helpers.h
diff --git a/drivers/remoteproc/remoteproc_elf_helpers.h b/drivers/remoteproc/remoteproc_elf_helpers.h
new file mode 100644
index 000000000000..4b6be7b6bf4d
--- /dev/null
+++ b/drivers/remoteproc/remoteproc_elf_helpers.h
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Remote processor elf helpers defines
+ *
+ * Copyright (C) 2020 Kalray, Inc.
+ */
+
+#ifndef REMOTEPROC_ELF_LOADER_H
+#define REMOTEPROC_ELF_LOADER_H
+
+#include <linux/elf.h>
+#include <linux/types.h>
+
+/**
+ * fw_elf_get_class - Get elf class
+ * @fw: the ELF firmware image
+ *
+ * Note that we use and elf32_hdr to access the class since the start of the
+ * struct is the same for both elf class
+ *
+ * Return: elf class of the firmware
+ */
+static inline u8 fw_elf_get_class(const struct firmware *fw)
+{
+ struct elf32_hdr *ehdr = (struct elf32_hdr *)fw->data;
+
+ return ehdr->e_ident[EI_CLASS];
+}
+
+static inline void elf_hdr_init_ident(struct elf32_hdr *hdr, u8 class)
+{
+ memcpy(hdr->e_ident, ELFMAG, SELFMAG);
+ hdr->e_ident[EI_CLASS] = class;
+ hdr->e_ident[EI_DATA] = ELFDATA2LSB;
+ hdr->e_ident[EI_VERSION] = EV_CURRENT;
+ hdr->e_ident[EI_OSABI] = ELFOSABI_NONE;
+}
+
+/* Generate getter and setter for a specific elf struct/field */
+#define ELF_GEN_FIELD_GET_SET(__s, __field, __type) \
+static inline __type elf_##__s##_get_##__field(u8 class, const void *arg) \
+{ \
+ if (class == ELFCLASS32) \
+ return (__type) ((const struct elf32_##__s *) arg)->__field; \
+ else \
+ return (__type) ((const struct elf64_##__s *) arg)->__field; \
+} \
+static inline void elf_##__s##_set_##__field(u8 class, void *arg, \
+ __type value) \
+{ \
+ if (class == ELFCLASS32) \
+ ((struct elf32_##__s *) arg)->__field = (__type) value; \
+ else \
+ ((struct elf64_##__s *) arg)->__field = (__type) value; \
+}
+
+ELF_GEN_FIELD_GET_SET(hdr, e_entry, u64)
+ELF_GEN_FIELD_GET_SET(hdr, e_phnum, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_shnum, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_phoff, u64)
+ELF_GEN_FIELD_GET_SET(hdr, e_shoff, u64)
+ELF_GEN_FIELD_GET_SET(hdr, e_shstrndx, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_machine, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_type, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_version, u32)
+ELF_GEN_FIELD_GET_SET(hdr, e_ehsize, u32)
+ELF_GEN_FIELD_GET_SET(hdr, e_phentsize, u16)
+
+ELF_GEN_FIELD_GET_SET(phdr, p_paddr, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_vaddr, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_filesz, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_memsz, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_type, u32)
+ELF_GEN_FIELD_GET_SET(phdr, p_offset, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_flags, u32)
+ELF_GEN_FIELD_GET_SET(phdr, p_align, u64)
+
+ELF_GEN_FIELD_GET_SET(shdr, sh_size, u64)
+ELF_GEN_FIELD_GET_SET(shdr, sh_offset, u64)
+ELF_GEN_FIELD_GET_SET(shdr, sh_name, u32)
+ELF_GEN_FIELD_GET_SET(shdr, sh_addr, u64)
+
+#define ELF_STRUCT_SIZE(__s) \
+static inline unsigned long elf_size_of_##__s(u8 class) \
+{ \
+ if (class == ELFCLASS32)\
+ return sizeof(struct elf32_##__s); \
+ else \
+ return sizeof(struct elf64_##__s); \
+}
+
+ELF_STRUCT_SIZE(shdr)
+ELF_STRUCT_SIZE(phdr)
+ELF_STRUCT_SIZE(hdr)
+
+#endif /* REMOTEPROC_ELF_LOADER_H */
--
2.15.0.276.g89ea799
WARNING: multiple messages have this Message-ID (diff)
From: Clement Leger <cleger@kalray.eu>
To: Ohad Ben-Cohen <ohad@wizery.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Jonathan Corbet <corbet@lwn.net>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
linux-remoteproc@vger.kernel.org
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>,
Loic PALLARDY <loic.pallardy@st.com>,
linux-doc@vger.kernel.org, linux-arm-msm@vger.kernel.org,
Arnaud Pouliquen <arnaud.pouliquen@st.com>,
Patrice Chotard <patrice.chotard@st.com>,
linux-kernel@vger.kernel.org, Clement Leger <cleger@kalray.eu>,
Andy Gross <agross@kernel.org>,
NXP Linux Team <linux-imx@nxp.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
s-anna <s-anna@ti.com>, Fabio Estevam <festevam@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 4/8] remoteproc: Add elf helpers to access elf64 and elf32 fields
Date: Mon, 2 Mar 2020 10:38:58 +0100 [thread overview]
Message-ID: <20200302093902.27849-5-cleger@kalray.eu> (raw)
In-Reply-To: <20200302093902.27849-1-cleger@kalray.eu>
elf32 and elf64 mainly differ by their types. In order to avoid
copy/pasting the whole loader code, generate static inline functions
which will access values according to the elf class. It allows to
keep a common loader basis.
In order to accommodate both elf types sizes, the maximum size for a
elf header member is chosen using the maximum value of the field for
both elf class.
Signed-off-by: Clement Leger <cleger@kalray.eu>
---
drivers/remoteproc/remoteproc_elf_helpers.h | 96 +++++++++++++++++++++++++++++
1 file changed, 96 insertions(+)
create mode 100644 drivers/remoteproc/remoteproc_elf_helpers.h
diff --git a/drivers/remoteproc/remoteproc_elf_helpers.h b/drivers/remoteproc/remoteproc_elf_helpers.h
new file mode 100644
index 000000000000..4b6be7b6bf4d
--- /dev/null
+++ b/drivers/remoteproc/remoteproc_elf_helpers.h
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Remote processor elf helpers defines
+ *
+ * Copyright (C) 2020 Kalray, Inc.
+ */
+
+#ifndef REMOTEPROC_ELF_LOADER_H
+#define REMOTEPROC_ELF_LOADER_H
+
+#include <linux/elf.h>
+#include <linux/types.h>
+
+/**
+ * fw_elf_get_class - Get elf class
+ * @fw: the ELF firmware image
+ *
+ * Note that we use and elf32_hdr to access the class since the start of the
+ * struct is the same for both elf class
+ *
+ * Return: elf class of the firmware
+ */
+static inline u8 fw_elf_get_class(const struct firmware *fw)
+{
+ struct elf32_hdr *ehdr = (struct elf32_hdr *)fw->data;
+
+ return ehdr->e_ident[EI_CLASS];
+}
+
+static inline void elf_hdr_init_ident(struct elf32_hdr *hdr, u8 class)
+{
+ memcpy(hdr->e_ident, ELFMAG, SELFMAG);
+ hdr->e_ident[EI_CLASS] = class;
+ hdr->e_ident[EI_DATA] = ELFDATA2LSB;
+ hdr->e_ident[EI_VERSION] = EV_CURRENT;
+ hdr->e_ident[EI_OSABI] = ELFOSABI_NONE;
+}
+
+/* Generate getter and setter for a specific elf struct/field */
+#define ELF_GEN_FIELD_GET_SET(__s, __field, __type) \
+static inline __type elf_##__s##_get_##__field(u8 class, const void *arg) \
+{ \
+ if (class == ELFCLASS32) \
+ return (__type) ((const struct elf32_##__s *) arg)->__field; \
+ else \
+ return (__type) ((const struct elf64_##__s *) arg)->__field; \
+} \
+static inline void elf_##__s##_set_##__field(u8 class, void *arg, \
+ __type value) \
+{ \
+ if (class == ELFCLASS32) \
+ ((struct elf32_##__s *) arg)->__field = (__type) value; \
+ else \
+ ((struct elf64_##__s *) arg)->__field = (__type) value; \
+}
+
+ELF_GEN_FIELD_GET_SET(hdr, e_entry, u64)
+ELF_GEN_FIELD_GET_SET(hdr, e_phnum, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_shnum, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_phoff, u64)
+ELF_GEN_FIELD_GET_SET(hdr, e_shoff, u64)
+ELF_GEN_FIELD_GET_SET(hdr, e_shstrndx, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_machine, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_type, u16)
+ELF_GEN_FIELD_GET_SET(hdr, e_version, u32)
+ELF_GEN_FIELD_GET_SET(hdr, e_ehsize, u32)
+ELF_GEN_FIELD_GET_SET(hdr, e_phentsize, u16)
+
+ELF_GEN_FIELD_GET_SET(phdr, p_paddr, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_vaddr, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_filesz, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_memsz, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_type, u32)
+ELF_GEN_FIELD_GET_SET(phdr, p_offset, u64)
+ELF_GEN_FIELD_GET_SET(phdr, p_flags, u32)
+ELF_GEN_FIELD_GET_SET(phdr, p_align, u64)
+
+ELF_GEN_FIELD_GET_SET(shdr, sh_size, u64)
+ELF_GEN_FIELD_GET_SET(shdr, sh_offset, u64)
+ELF_GEN_FIELD_GET_SET(shdr, sh_name, u32)
+ELF_GEN_FIELD_GET_SET(shdr, sh_addr, u64)
+
+#define ELF_STRUCT_SIZE(__s) \
+static inline unsigned long elf_size_of_##__s(u8 class) \
+{ \
+ if (class == ELFCLASS32)\
+ return sizeof(struct elf32_##__s); \
+ else \
+ return sizeof(struct elf64_##__s); \
+}
+
+ELF_STRUCT_SIZE(shdr)
+ELF_STRUCT_SIZE(phdr)
+ELF_STRUCT_SIZE(hdr)
+
+#endif /* REMOTEPROC_ELF_LOADER_H */
--
2.15.0.276.g89ea799
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next prev parent reply other threads:[~2020-03-02 9:38 UTC|newest]
Thread overview: 164+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 8:28 [RFC PATCH] rproc: Add elf64 support in elf loader Clément Leger
2019-05-07 12:09 ` Clément Leger
2019-05-07 13:37 ` Arnaud Pouliquen
2019-05-09 8:59 ` Clément Leger
2019-08-19 11:45 ` [PATCH] " Clement Leger
2019-09-13 10:58 ` Clément Leger
2019-10-04 8:27 ` Clément Leger
2019-10-04 18:42 ` [PATCH v2] remoteproc: " Clement Leger
2020-01-09 9:31 ` Clément Leger
2020-01-24 0:53 ` Mathieu Poirier
2020-01-24 8:24 ` Clément Leger
2020-01-24 18:10 ` Mathieu Poirier
2020-01-24 18:10 ` Mathieu Poirier
2020-01-24 21:58 ` Mathieu Poirier
2020-01-24 21:58 ` Mathieu Poirier
2020-01-27 8:33 ` Clément Leger
2020-01-28 17:14 ` Mathieu Poirier
2020-01-29 8:55 ` Clément Leger
2020-01-29 16:30 ` Mathieu Poirier
2020-01-29 16:30 ` Mathieu Poirier
2020-02-04 14:33 ` [PATCH v2 1/2] remoteproc: Use u64 len for da_to_va Clement Leger
2020-02-04 14:33 ` Clement Leger
2020-02-04 14:33 ` [PATCH v2 2/2] remoteproc: Add elf64 support in elf loader Clement Leger
2020-02-04 14:33 ` Clement Leger
2020-02-04 16:27 ` [PATCH v2 1/2] remoteproc: Use u64 len for da_to_va Arnaud POULIQUEN
2020-02-04 16:27 ` Arnaud POULIQUEN
2020-02-04 16:27 ` Arnaud POULIQUEN
2020-02-04 17:10 ` Clément Leger
2020-02-04 17:10 ` Clément Leger
2020-02-04 17:42 ` Arnaud POULIQUEN
2020-02-04 17:42 ` Arnaud POULIQUEN
2020-02-04 17:42 ` Arnaud POULIQUEN
2020-02-04 17:44 ` [PATCH v3 0/2] remoteproc: Add elf64 support to elf loader Clement Leger
2020-02-04 17:44 ` Clement Leger
2020-02-04 17:44 ` [PATCH v3 1/2] remoteproc: Use u64 len for da_to_va Clement Leger
2020-02-04 17:44 ` Clement Leger
2020-02-05 21:06 ` Mathieu Poirier
2020-02-05 21:06 ` Mathieu Poirier
2020-02-04 17:44 ` [PATCH v3 2/2] remoteproc: Add elf64 support in elf loader Clement Leger
2020-02-04 17:44 ` Clement Leger
2020-02-05 22:49 ` Mathieu Poirier
2020-02-05 22:49 ` Mathieu Poirier
2020-02-06 8:37 ` Clément Leger
2020-02-06 8:37 ` Clément Leger
2020-02-06 15:05 ` Clément Leger
2020-02-06 15:05 ` Clément Leger
2020-02-06 17:48 ` Mathieu Poirier
2020-02-06 17:48 ` Mathieu Poirier
2020-02-06 17:48 ` Mathieu Poirier
2020-02-07 7:57 ` Clément Leger
2020-02-07 7:57 ` Clément Leger
2020-02-10 16:22 ` [PATCH v4 0/5] remoteproc: Add elf64 support Clement Leger
2020-02-10 16:22 ` Clement Leger
2020-02-10 16:22 ` [PATCH v4 1/5] remoteproc: Use u64 len for da_to_va Clement Leger
2020-02-10 16:22 ` Clement Leger
2020-02-11 15:53 ` Arnaud POULIQUEN
2020-02-11 15:53 ` Arnaud POULIQUEN
2020-02-11 15:53 ` Arnaud POULIQUEN
2020-02-11 16:39 ` Clément Leger
2020-02-11 16:39 ` Clément Leger
2020-02-11 17:24 ` Arnaud POULIQUEN
2020-02-11 17:24 ` Arnaud POULIQUEN
2020-02-11 22:37 ` Mathieu Poirier
2020-02-11 22:37 ` Mathieu Poirier
2020-02-11 22:37 ` Mathieu Poirier
2020-02-12 10:37 ` Clément Leger
2020-02-12 10:37 ` Clément Leger
2020-02-12 21:59 ` Mathieu Poirier
2020-02-12 21:59 ` Mathieu Poirier
2020-02-18 10:10 ` Clément Leger
2020-02-18 10:10 ` Clément Leger
2020-02-18 17:01 ` Mathieu Poirier
2020-02-18 17:01 ` Mathieu Poirier
2020-02-10 16:22 ` [PATCH v4 2/5] remoteproc: Use u64 type for boot_addr Clement Leger
2020-02-10 16:22 ` Clement Leger
2020-02-10 16:22 ` [PATCH v4 3/5] remoteproc: Add elf helpers to access elf64 and elf32 fields Clement Leger
2020-02-10 16:22 ` Clement Leger
2020-02-10 16:22 ` [PATCH v4 4/5] remoteproc: Add elf64 support in elf loader Clement Leger
2020-02-10 16:22 ` Clement Leger
2020-02-10 16:22 ` [PATCH v4 5/5] remoteproc: Adapt coredump to generate correct elf type Clement Leger
2020-02-10 16:22 ` Clement Leger
2020-02-11 23:11 ` Mathieu Poirier
2020-02-11 23:11 ` Mathieu Poirier
2020-02-11 15:57 ` [PATCH v4 0/5] remoteproc: Add elf64 support Arnaud POULIQUEN
2020-02-11 15:57 ` Arnaud POULIQUEN
2020-02-11 15:57 ` Arnaud POULIQUEN
2020-02-11 23:12 ` Mathieu Poirier
2020-02-11 23:12 ` Mathieu Poirier
2020-02-12 8:15 ` Arnaud POULIQUEN
2020-02-12 8:15 ` Arnaud POULIQUEN
2020-02-12 8:15 ` Arnaud POULIQUEN
2020-03-02 9:38 ` [PATCH v5 0/8] " Clement Leger
2020-03-02 9:38 ` Clement Leger
2020-03-02 9:38 ` [PATCH v5 1/8] remoteproc: Use size_t type for len in da_to_va Clement Leger
2020-03-02 9:38 ` Clement Leger
2020-03-02 23:06 ` Bjorn Andersson
2020-03-02 23:06 ` Bjorn Andersson
2020-03-02 23:06 ` Bjorn Andersson
2020-03-09 17:52 ` Mathieu Poirier
2020-03-09 17:52 ` Mathieu Poirier
2020-03-27 7:37 ` Oleksij Rempel
2020-03-27 7:37 ` Oleksij Rempel
2020-03-02 9:38 ` [PATCH v5 2/8] remoteproc: Use size_t instead of int for rproc_mem_entry len Clement Leger
2020-03-02 9:38 ` Clement Leger
2020-03-02 23:07 ` Bjorn Andersson
2020-03-02 23:07 ` Bjorn Andersson
2020-03-02 23:07 ` Bjorn Andersson
2020-03-09 19:21 ` Mathieu Poirier
2020-03-09 19:21 ` Mathieu Poirier
2020-03-02 9:38 ` [PATCH v5 3/8] remoteproc: Use u64 type for boot_addr Clement Leger
2020-03-02 9:38 ` Clement Leger
2020-03-02 23:08 ` Bjorn Andersson
2020-03-02 23:08 ` Bjorn Andersson
2020-03-02 23:08 ` Bjorn Andersson
2020-03-09 19:52 ` Mathieu Poirier
2020-03-09 19:52 ` Mathieu Poirier
2020-03-10 7:59 ` Clément Leger
2020-03-10 7:59 ` Clément Leger
2020-03-10 19:32 ` Bjorn Andersson
2020-03-10 19:32 ` Bjorn Andersson
2020-03-10 19:32 ` Bjorn Andersson
2020-03-02 9:38 ` Clement Leger [this message]
2020-03-02 9:38 ` [PATCH v5 4/8] remoteproc: Add elf helpers to access elf64 and elf32 fields Clement Leger
2020-03-02 23:12 ` Bjorn Andersson
2020-03-02 23:12 ` Bjorn Andersson
2020-03-02 23:12 ` Bjorn Andersson
2020-03-09 19:56 ` Mathieu Poirier
2020-03-09 19:56 ` Mathieu Poirier
2020-03-02 9:38 ` [PATCH v5 5/8] remoteproc: Rename rproc_elf_sanity_check for elf32 Clement Leger
2020-03-02 9:38 ` Clement Leger
2020-03-02 23:13 ` Bjorn Andersson
2020-03-02 23:13 ` Bjorn Andersson
2020-03-02 23:13 ` Bjorn Andersson
2020-03-03 8:02 ` Clément Leger
2020-03-03 8:02 ` Clément Leger
2020-03-10 0:00 ` Bjorn Andersson
2020-03-10 0:00 ` Bjorn Andersson
2020-03-10 0:00 ` Bjorn Andersson
2020-03-10 15:20 ` Mathieu Poirier
2020-03-10 15:20 ` Mathieu Poirier
2020-03-10 15:20 ` Mathieu Poirier
2020-03-10 15:38 ` Clément Leger
2020-03-10 15:38 ` Clément Leger
2020-03-10 19:18 ` Mathieu Poirier
2020-03-10 19:18 ` Mathieu Poirier
2020-03-10 19:30 ` Bjorn Andersson
2020-03-10 19:30 ` Bjorn Andersson
2020-03-10 19:30 ` Bjorn Andersson
2020-03-02 9:39 ` [PATCH v5 6/8] remoteproc: Add elf64 support in elf loader Clement Leger
2020-03-02 9:39 ` Clement Leger
2020-03-02 9:39 ` [PATCH v5 7/8] remoteproc: Allow overriding only sanity_check Clement Leger
2020-03-02 9:39 ` Clement Leger
2020-03-02 9:39 ` [PATCH v5 8/8] remoteproc: Adapt coredump to generate correct elf type Clement Leger
2020-03-02 9:39 ` Clement Leger
2020-03-03 22:01 ` Bjorn Andersson
2020-03-03 22:01 ` Bjorn Andersson
2020-03-03 22:01 ` Bjorn Andersson
2020-03-09 20:32 ` Mathieu Poirier
2020-03-09 20:32 ` Mathieu Poirier
2020-03-09 23:57 ` Bjorn Andersson
2020-03-09 23:57 ` Bjorn Andersson
2020-03-09 23:57 ` Bjorn Andersson
2020-03-10 8:12 ` Clément Leger
2020-03-10 8:12 ` Clément Leger
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