diff options
| author | Dale Rahn <drahn@cvs.openbsd.org> | 2018-07-04 17:52:30 +0000 |
|---|---|---|
| committer | Dale Rahn <drahn@cvs.openbsd.org> | 2018-07-04 17:52:30 +0000 |
| commit | 11362c6c7cabcf7e045553f2434744084bf45d08 (patch) | |
| tree | a18ec9fb654bd4ba026c6ca82ab8e50642d01ad8 /sys/arch | |
| parent | 5c660606ecc99ecfa6e8a7105ef6fb197d09718a (diff) | |
ptrace debug support for arm64.
Single step is not yet supported but reading and setting registers are
working as expected, breakpoints also are working.
ok kettenis@
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/arm64/arm64/process_machdep.c | 22 | ||||
| -rw-r--r-- | sys/arch/arm64/include/pcb.h | 3 |
2 files changed, 21 insertions, 4 deletions
diff --git a/sys/arch/arm64/arm64/process_machdep.c b/sys/arch/arm64/arm64/process_machdep.c index 79d2d959e5c..0c6e0c444ac 100644 --- a/sys/arch/arm64/arm64/process_machdep.c +++ b/sys/arch/arm64/arm64/process_machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: process_machdep.c,v 1.3 2017/04/11 06:52:13 kettenis Exp $ */ +/* $OpenBSD: process_machdep.c,v 1.4 2018/07/04 17:52:29 drahn Exp $ */ /* * Copyright (c) 2014 Patrick Wildt <patrick@blueri.se> * @@ -81,26 +81,42 @@ process_read_fpregs(struct proc *p, struct fpreg *regs) int process_write_regs(struct proc *p, struct reg *regs) { + struct trapframe *tf = p->p_addr->u_pcb.pcb_tf; + + memcpy(&tf->tf_x[0], ®s->r_reg[0], sizeof(tf->tf_x)); + tf->tf_lr = regs->r_lr; + tf->tf_sp = regs->r_sp; + tf->tf_elr = regs->r_pc; + tf->tf_spsr = (0xff0f0000 & regs->r_spsr) | (tf->tf_spsr & 0x0000ffff); + p->p_addr->u_pcb.pcb_tcb = (void *)regs->r_tpidr; return(0); } int process_write_fpregs(struct proc *p, struct fpreg *regs) { + p->p_addr->u_pcb.pcb_flags |= PCB_FPU; + memcpy(&p->p_addr->u_pcb.pcb_fpstate, regs, + sizeof(p->p_addr->u_pcb.pcb_fpstate)); return(0); } int process_sstep(struct proc *p, int sstep) { - if (sstep) - return (EINVAL); + if (sstep) { + p->p_addr->u_pcb.pcb_flags |= PCB_SINGLESTEP; + } else { + p->p_addr->u_pcb.pcb_flags &= ~(PCB_SINGLESTEP); + } return 0; } int process_set_pc(struct proc *p, caddr_t addr) { + struct trapframe *tf = p->p_addr->u_pcb.pcb_tf; + tf->tf_elr = (uint64_t)addr; return (0); } diff --git a/sys/arch/arm64/include/pcb.h b/sys/arch/arm64/include/pcb.h index c242aab93ac..d56a1c1f7ab 100644 --- a/sys/arch/arm64/include/pcb.h +++ b/sys/arch/arm64/include/pcb.h @@ -1,4 +1,4 @@ -/* $OpenBSD: pcb.h,v 1.3 2017/03/24 19:48:01 kettenis Exp $ */ +/* $OpenBSD: pcb.h,v 1.4 2018/07/04 17:52:29 drahn Exp $ */ /* * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com> * @@ -31,6 +31,7 @@ struct trapframe; struct pcb { u_int pcb_flags; #define PCB_FPU 0x00000001 /* Process had FPU initialized */ +#define PCB_SINGLESTEP 0x00000002 /* Single step process */ struct trapframe *pcb_tf; register_t pcb_sp; // stack pointer of switchframe |