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Tue, 23 Jul 2024 11:09:00 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Cc: Warner Losh , Peter Maydell , Kyle Evans , qemu-arm@nongnu.org, Stacey Son , Ajeet Singh , Kyle Evans , Richard Henderson Subject: [PULL 05/14] bsd-user:Add get_mcontext function for ARM AArch64 Date: Tue, 23 Jul 2024 12:07:16 -0600 Message-ID: <20240723180725.99114-6-imp@bsdimp.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240723180725.99114-1-imp@bsdimp.com> References: <20240723180725.99114-1-imp@bsdimp.com> 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::12b; envelope-from=imp@bsdimp.com; helo=mail-il1-x12b.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=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 @bsdimp-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1721758383684116600 Content-Type: text/plain; charset="utf-8" From: Stacey Son function to retrieve machine context,it populates the provided target_mcontext_t structure with information from the CPUARMState registers. Signed-off-by: Stacey Son Signed-off-by: Ajeet Singh Co-authored-by: Kyle Evans Reviewed-by: Richard Henderson Message-Id: <20240707191128.10509-6-itachis@FreeBSD.org> Signed-off-by: Warner Losh --- bsd-user/aarch64/signal.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/bsd-user/aarch64/signal.c b/bsd-user/aarch64/signal.c index 98861f9ab3b..ab3bf8558ab 100644 --- a/bsd-user/aarch64/signal.c +++ b/bsd-user/aarch64/signal.c @@ -51,3 +51,33 @@ abi_long set_sigtramp_args(CPUARMState *regs, int sig, =20 return 0; } + +/* + * Compare to get_mcontext() in arm64/arm64/machdep.c + * Assumes that the memory is locked if mcp points to user memory. + */ +abi_long get_mcontext(CPUARMState *regs, target_mcontext_t *mcp, int flags) +{ + int err =3D 0, i; + uint64_t *gr =3D mcp->mc_gpregs.gp_x; + + mcp->mc_gpregs.gp_spsr =3D pstate_read(regs); + if (flags & TARGET_MC_GET_CLEAR_RET) { + gr[0] =3D 0UL; + mcp->mc_gpregs.gp_spsr &=3D ~CPSR_C; + } else { + gr[0] =3D tswap64(regs->xregs[0]); + } + + for (i =3D 1; i < 30; i++) { + gr[i] =3D tswap64(regs->xregs[i]); + } + + mcp->mc_gpregs.gp_sp =3D tswap64(regs->xregs[TARGET_REG_SP]); + mcp->mc_gpregs.gp_lr =3D tswap64(regs->xregs[TARGET_REG_LR]); + mcp->mc_gpregs.gp_elr =3D tswap64(regs->pc); + + /* XXX FP? */ + + return err; +} --=20 2.45.1