| Message ID | 20240707191128.10509-6-itachis@FreeBSD.org |
|---|---|
| State | New |
| Headers | show |
| Series | ARM AArch64 Support for BSD | expand |
On 7/7/24 12:11, Ajeet Singh wrote: > From: Stacey Son<sson@FreeBSD.org> > > function to retrieve machine context,it populates the provided > target_mcontext_t structure with information from the CPUARMState > registers. > > Signed-off-by: Stacey Son<sson@FreeBSD.org> > Signed-off-by: Ajeet Singh<itachis@FreeBSD.org> > Co-authored-by: Kyle Evans<kevans@FreeBSD.org> > --- > bsd-user/aarch64/signal.c | 30 ++++++++++++++++++++++++++++++ > 1 file changed, 30 insertions(+) Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
diff --git a/bsd-user/aarch64/signal.c b/bsd-user/aarch64/signal.c index 98861f9ab3..ab3bf8558a 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, 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 = 0, i; + uint64_t *gr = mcp->mc_gpregs.gp_x; + + mcp->mc_gpregs.gp_spsr = pstate_read(regs); + if (flags & TARGET_MC_GET_CLEAR_RET) { + gr[0] = 0UL; + mcp->mc_gpregs.gp_spsr &= ~CPSR_C; + } else { + gr[0] = tswap64(regs->xregs[0]); + } + + for (i = 1; i < 30; i++) { + gr[i] = tswap64(regs->xregs[i]); + } + + mcp->mc_gpregs.gp_sp = tswap64(regs->xregs[TARGET_REG_SP]); + mcp->mc_gpregs.gp_lr = tswap64(regs->xregs[TARGET_REG_LR]); + mcp->mc_gpregs.gp_elr = tswap64(regs->pc); + + /* XXX FP? */ + + return err; +}