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Tsirkin" , Thomas Huth , Bastian Koppelmann , Richard Henderson , Pierrick Bouvier Subject: [PATCH 04/16] hw/i386: Use explicit little-endian LD/ST API Date: Fri, 4 Oct 2024 01:41:59 +0200 Message-ID: <20241003234211.53644-5-philmd@linaro.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241003234211.53644-1-philmd@linaro.org> References: <20241003234211.53644-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32f; envelope-from=philmd@linaro.org; helo=mail-wm1-x32f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1727999003126116600 The x86 architecture uses little endianness. Directly use the little-endian LD/ST API. Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- hw/i386/multiboot.c | 36 ++++++++++++++++++------------------ hw/i386/x86-common.c | 26 +++++++++++++------------- 2 files changed, 31 insertions(+), 31 deletions(-) diff --git a/hw/i386/multiboot.c b/hw/i386/multiboot.c index 3332712ab35..ba4ead5270c 100644 --- a/hw/i386/multiboot.c +++ b/hw/i386/multiboot.c @@ -133,9 +133,9 @@ static void mb_add_mod(MultibootState *s, =20 p =3D (char *)s->mb_buf + s->offset_mbinfo + MB_MOD_SIZE * s->mb_mods_= count; =20 - stl_p(p + MB_MOD_START, start); - stl_p(p + MB_MOD_END, end); - stl_p(p + MB_MOD_CMDLINE, cmdline_phys); + stl_le_p(p + MB_MOD_START, start); + stl_le_p(p + MB_MOD_END, end); + stl_le_p(p + MB_MOD_CMDLINE, cmdline_phys); =20 mb_debug("mod%02d: "HWADDR_FMT_plx" - "HWADDR_FMT_plx, s->mb_mods_count, start, end); @@ -168,9 +168,9 @@ int load_multiboot(X86MachineState *x86ms, /* Ok, let's see if it is a multiboot image. The header is 12x32bit long, so the latest entry may be 8192 - 48. = */ for (i =3D 0; i < (8192 - 48); i +=3D 4) { - if (ldl_p(header+i) =3D=3D 0x1BADB002) { - uint32_t checksum =3D ldl_p(header+i+8); - flags =3D ldl_p(header+i+4); + if (ldl_le_p(header+i) =3D=3D 0x1BADB002) { + uint32_t checksum =3D ldl_le_p(header+i+8); + flags =3D ldl_le_p(header+i+4); checksum +=3D flags; checksum +=3D (uint32_t)0x1BADB002; if (!checksum) { @@ -223,11 +223,11 @@ int load_multiboot(X86MachineState *x86ms, mb_kernel_size, (size_t)mh_entry_addr); } else { /* Valid if mh_flags sets MULTIBOOT_HEADER_HAS_ADDR. */ - uint32_t mh_header_addr =3D ldl_p(header+i+12); - uint32_t mh_load_end_addr =3D ldl_p(header+i+20); - uint32_t mh_bss_end_addr =3D ldl_p(header+i+24); + uint32_t mh_header_addr =3D ldl_le_p(header+i+12); + uint32_t mh_load_end_addr =3D ldl_le_p(header+i+20); + uint32_t mh_bss_end_addr =3D ldl_le_p(header+i+24); =20 - mh_load_addr =3D ldl_p(header+i+16); + mh_load_addr =3D ldl_le_p(header+i+16); if (mh_header_addr < mh_load_addr) { error_report("invalid load_addr address"); exit(1); @@ -239,7 +239,7 @@ int load_multiboot(X86MachineState *x86ms, =20 uint32_t mb_kernel_text_offset =3D i - (mh_header_addr - mh_load_a= ddr); uint32_t mb_load_size =3D 0; - mh_entry_addr =3D ldl_p(header+i+28); + mh_entry_addr =3D ldl_le_p(header+i+28); =20 if (mh_load_end_addr) { if (mh_load_end_addr < mh_load_addr) { @@ -364,22 +364,22 @@ int load_multiboot(X86MachineState *x86ms, =20 /* Commandline support */ kcmdline =3D g_strdup_printf("%s %s", kernel_filename, kernel_cmdline); - stl_p(bootinfo + MBI_CMDLINE, mb_add_cmdline(&mbs, kcmdline)); + stl_le_p(bootinfo + MBI_CMDLINE, mb_add_cmdline(&mbs, kcmdline)); =20 - stl_p(bootinfo + MBI_BOOTLOADER, mb_add_bootloader(&mbs, bootloader_na= me)); + stl_le_p(bootinfo + MBI_BOOTLOADER, mb_add_bootloader(&mbs, bootloader= _name)); =20 - stl_p(bootinfo + MBI_MODS_ADDR, mbs.mb_buf_phys + mbs.offset_mbinfo); - stl_p(bootinfo + MBI_MODS_COUNT, mbs.mb_mods_count); /* mods_count */ + stl_le_p(bootinfo + MBI_MODS_ADDR, mbs.mb_buf_phys + mbs.offset_mbinf= o); + stl_le_p(bootinfo + MBI_MODS_COUNT, mbs.mb_mods_count); /* mods_count = */ =20 /* the kernel is where we want it to be now */ - stl_p(bootinfo + MBI_FLAGS, MULTIBOOT_FLAGS_MEMORY + stl_le_p(bootinfo + MBI_FLAGS, MULTIBOOT_FLAGS_MEMORY | MULTIBOOT_FLAGS_BOOT_DEVICE | MULTIBOOT_FLAGS_CMDLINE | MULTIBOOT_FLAGS_MODULES | MULTIBOOT_FLAGS_MMAP | MULTIBOOT_FLAGS_BOOTLOADER); - stl_p(bootinfo + MBI_BOOT_DEVICE, 0x8000ffff); /* XXX: use the -boot s= witch? */ - stl_p(bootinfo + MBI_MMAP_ADDR, ADDR_E820_MAP); + stl_le_p(bootinfo + MBI_BOOT_DEVICE, 0x8000ffff); /* XXX: use the -boo= t switch? */ + stl_le_p(bootinfo + MBI_MMAP_ADDR, ADDR_E820_MAP); =20 mb_debug("multiboot: entry_addr =3D %#x", mh_entry_addr); mb_debug(" mb_buf_phys =3D "HWADDR_FMT_plx, mbs.mb_buf_phy= s); diff --git a/hw/i386/x86-common.c b/hw/i386/x86-common.c index 992ea1f25e9..daa6a5d500c 100644 --- a/hw/i386/x86-common.c +++ b/hw/i386/x86-common.c @@ -586,7 +586,7 @@ static bool load_elfboot(const char *kernel_filename, uint64_t elf_low, elf_high; int kernel_size; =20 - if (ldl_p(header) !=3D 0x464c457f) { + if (ldl_le_p(header) !=3D 0x464c457f) { return false; /* no elfboot */ } =20 @@ -669,8 +669,8 @@ void x86_load_linux(X86MachineState *x86ms, * kernel protocol version. * Please see https://www.kernel.org/doc/Documentation/x86/boot.txt */ - if (ldl_p(header + 0x202) =3D=3D 0x53726448) /* Magic signature "HdrS"= */ { - protocol =3D lduw_p(header + 0x206); + if (ldl_le_p(header + 0x202) =3D=3D 0x53726448) /* Magic signature "Hd= rS" */ { + protocol =3D lduw_be_p(header + 0x206); } else { /* * This could be a multiboot kernel. If it is, let's stop treating= it @@ -762,7 +762,7 @@ void x86_load_linux(X86MachineState *x86ms, =20 /* highest address for loading the initrd */ if (protocol >=3D 0x20c && - lduw_p(header + 0x236) & XLF_CAN_BE_LOADED_ABOVE_4G) { + lduw_be_p(header + 0x236) & XLF_CAN_BE_LOADED_ABOVE_4G) { /* * Linux has supported initrd up to 4 GB for a very long time (200= 7, * long before XLF_CAN_BE_LOADED_ABOVE_4G which was added in 2013), @@ -781,7 +781,7 @@ void x86_load_linux(X86MachineState *x86ms, */ initrd_max =3D UINT32_MAX; } else if (protocol >=3D 0x203) { - initrd_max =3D ldl_p(header + 0x22c); + initrd_max =3D ldl_le_p(header + 0x22c); } else { initrd_max =3D 0x37ffffff; } @@ -797,10 +797,10 @@ void x86_load_linux(X86MachineState *x86ms, sev_load_ctx.cmdline_size =3D strlen(kernel_cmdline) + 1; =20 if (protocol >=3D 0x202) { - stl_p(header + 0x228, cmdline_addr); + stl_le_p(header + 0x228, cmdline_addr); } else { - stw_p(header + 0x20, 0xA33F); - stw_p(header + 0x22, cmdline_addr - real_addr); + stw_le_p(header + 0x20, 0xA33F); + stw_le_p(header + 0x22, cmdline_addr - real_addr); } =20 /* handle vga=3D parameter */ @@ -824,7 +824,7 @@ void x86_load_linux(X86MachineState *x86ms, exit(1); } } - stw_p(header + 0x1fa, video_mode); + stw_le_p(header + 0x1fa, video_mode); } =20 /* loader type */ @@ -839,7 +839,7 @@ void x86_load_linux(X86MachineState *x86ms, /* heap */ if (protocol >=3D 0x201) { header[0x211] |=3D 0x80; /* CAN_USE_HEAP */ - stw_p(header + 0x224, cmdline_addr - real_addr - 0x200); + stw_le_p(header + 0x224, cmdline_addr - real_addr - 0x200); } =20 /* load initrd */ @@ -879,8 +879,8 @@ void x86_load_linux(X86MachineState *x86ms, sev_load_ctx.initrd_data =3D initrd_data; sev_load_ctx.initrd_size =3D initrd_size; =20 - stl_p(header + 0x218, initrd_addr); - stl_p(header + 0x21c, initrd_size); + stl_le_p(header + 0x218, initrd_addr); + stl_le_p(header + 0x21c, initrd_size); } =20 /* load kernel and setup */ @@ -926,7 +926,7 @@ void x86_load_linux(X86MachineState *x86ms, kernel_size =3D setup_data_offset + sizeof(struct setup_data) + dt= b_size; kernel =3D g_realloc(kernel, kernel_size); =20 - stq_p(header + 0x250, prot_addr + setup_data_offset); + stq_le_p(header + 0x250, prot_addr + setup_data_offset); =20 setup_data =3D (struct setup_data *)(kernel + setup_data_offset); setup_data->next =3D 0; --=20 2.45.2