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Mon, 01 Jul 2024 09:51:48 -0700 (PDT) From: Omar Sandoval To: qemu-ppc@nongnu.org, Nicholas Piggin , Daniel Henrique Barboza Cc: Harsh Prateek Bora , qemu-devel@nongnu.org Subject: [PATCH v2] target/ppc/arch_dump: set prstatus pid to cpuid Date: Mon, 1 Jul 2024 09:51:35 -0700 Message-ID: <3c3dd56b4e88b6863e971d72daae7c0324499712.1719852483.git.osandov@osandov.com> X-Mailer: git-send-email 2.45.2 MIME-Version: 1.0 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: none client-ip=2607:f8b0:4864:20::62c; envelope-from=osandov@osandov.com; helo=mail-pl1-x62c.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham 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 @osandov-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1719852743777100003 Content-Type: text/plain; charset="utf-8" Every other architecture does this, and debuggers need it to be able to identify which prstatus note corresponds to which CPU. Reviewed-by: Harsh Prateek Bora Signed-off-by: Omar Sandoval Reviewed-by: Thomas Huth --- This is v2 from my small series [1] making QEMU fill the pr_pid field of the NT_PRSTATUS note consistently. Changes from v1: - Add comments explaning sizes of padding fields. 1: https://lore.kernel.org/qemu-devel/cover.1718771802.git.osandov@osandov.= com/ target/ppc/arch_dump.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/target/ppc/arch_dump.c b/target/ppc/arch_dump.c index a8315659d9..ff93cac61e 100644 --- a/target/ppc/arch_dump.c +++ b/target/ppc/arch_dump.c @@ -47,9 +47,14 @@ struct PPCUserRegStruct { } QEMU_PACKED; =20 struct PPCElfPrstatus { - char pad1[112]; + char pad1[32]; /* 32 =3D=3D offsetof(struct elf_prstatus, pr_pid) */ + uint32_t pid; + char pad2[76]; /* 76 =3D=3D offsetof(struct elf_prstatus, pr_reg) - + offsetof(struct elf_prstatus, pr_ppid) */ struct PPCUserRegStruct pr_reg; - char pad2[40]; + char pad3[40]; /* 40 =3D=3D sizeof(struct elf_prstatus) - + offsetof(struct elf_prstatus, pr_reg) - + sizeof(struct user_pt_regs) */ } QEMU_PACKED; =20 =20 @@ -96,7 +101,7 @@ typedef struct NoteFuncArg { DumpState *state; } NoteFuncArg; =20 -static void ppc_write_elf_prstatus(NoteFuncArg *arg, PowerPCCPU *cpu) +static void ppc_write_elf_prstatus(NoteFuncArg *arg, PowerPCCPU *cpu, int = id) { int i; reg_t cr; @@ -109,6 +114,7 @@ static void ppc_write_elf_prstatus(NoteFuncArg *arg, Po= werPCCPU *cpu) =20 prstatus =3D ¬e->contents.prstatus; memset(prstatus, 0, sizeof(*prstatus)); + prstatus->pid =3D cpu_to_dump32(s, id); reg =3D &prstatus->pr_reg; =20 for (i =3D 0; i < 32; i++) { @@ -127,7 +133,7 @@ static void ppc_write_elf_prstatus(NoteFuncArg *arg, Po= werPCCPU *cpu) reg->ccr =3D cpu_to_dump_reg(s, cr); } =20 -static void ppc_write_elf_fpregset(NoteFuncArg *arg, PowerPCCPU *cpu) +static void ppc_write_elf_fpregset(NoteFuncArg *arg, PowerPCCPU *cpu, int = id) { int i; struct PPCElfFpregset *fpregset; @@ -146,7 +152,7 @@ static void ppc_write_elf_fpregset(NoteFuncArg *arg, Po= werPCCPU *cpu) fpregset->fpscr =3D cpu_to_dump_reg(s, cpu->env.fpscr); } =20 -static void ppc_write_elf_vmxregset(NoteFuncArg *arg, PowerPCCPU *cpu) +static void ppc_write_elf_vmxregset(NoteFuncArg *arg, PowerPCCPU *cpu, int= id) { int i; struct PPCElfVmxregset *vmxregset; @@ -178,7 +184,7 @@ static void ppc_write_elf_vmxregset(NoteFuncArg *arg, P= owerPCCPU *cpu) vmxregset->vscr.u32[3] =3D cpu_to_dump32(s, ppc_get_vscr(&cpu->env)); } =20 -static void ppc_write_elf_vsxregset(NoteFuncArg *arg, PowerPCCPU *cpu) +static void ppc_write_elf_vsxregset(NoteFuncArg *arg, PowerPCCPU *cpu, int= id) { int i; struct PPCElfVsxregset *vsxregset; @@ -195,7 +201,7 @@ static void ppc_write_elf_vsxregset(NoteFuncArg *arg, P= owerPCCPU *cpu) } } =20 -static void ppc_write_elf_speregset(NoteFuncArg *arg, PowerPCCPU *cpu) +static void ppc_write_elf_speregset(NoteFuncArg *arg, PowerPCCPU *cpu, int= id) { struct PPCElfSperegset *speregset; Note *note =3D &arg->note; @@ -211,7 +217,7 @@ static void ppc_write_elf_speregset(NoteFuncArg *arg, P= owerPCCPU *cpu) =20 static const struct NoteFuncDescStruct { int contents_size; - void (*note_contents_func)(NoteFuncArg *arg, PowerPCCPU *cpu); + void (*note_contents_func)(NoteFuncArg *arg, PowerPCCPU *cpu, int id); } note_func[] =3D { {sizeof_field(Note, contents.prstatus), ppc_write_elf_prstatus}, {sizeof_field(Note, contents.fpregset), ppc_write_elf_fpregset}, @@ -282,7 +288,7 @@ static int ppc_write_all_elf_notes(const char *note_nam= e, arg.note.hdr.n_descsz =3D cpu_to_dump32(s, nf->contents_size); strncpy(arg.note.name, note_name, sizeof(arg.note.name)); =20 - (*nf->note_contents_func)(&arg, cpu); + (*nf->note_contents_func)(&arg, cpu, id); =20 note_size =3D sizeof(arg.note) - sizeof(arg.note.contents) + nf->contents_si= ze; --=20 2.45.2