svn commit: r211804 - in head/sys: amd64/amd64 i386/i386
Chagin Dmitry
dchagin at freebsd.org
Thu Feb 10 16:13:34 UTC 2011
On Wed, Aug 25, 2010 at 09:10:32AM +0000, Rui Paulo wrote:
> Author: rpaulo
> Date: Wed Aug 25 09:10:32 2010
> New Revision: 211804
> URL: http://svn.freebsd.org/changeset/base/211804
>
> Log:
> Call the necessary DTrace function pointers when we have different kinds
> of traps.
>
> Sponsored by: The FreeBSD Foundation
>
> Modified:
> head/sys/amd64/amd64/trap.c
> head/sys/i386/i386/trap.c
>
> Modified: head/sys/amd64/amd64/trap.c
> ==============================================================================
> --- head/sys/amd64/amd64/trap.c Wed Aug 25 08:49:21 2010 (r211803)
> +++ head/sys/amd64/amd64/trap.c Wed Aug 25 09:10:32 2010 (r211804)
> @@ -109,6 +109,13 @@ dtrace_doubletrap_func_t dtrace_doubletr
> * implementation opaque.
> */
> systrace_probe_func_t systrace_probe_func;
> +
> +/*
> + * These hooks are necessary for the pid, usdt and fasttrap providers.
> + */
> +dtrace_fasttrap_probe_ptr_t dtrace_fasttrap_probe_ptr;
> +dtrace_pid_probe_ptr_t dtrace_pid_probe_ptr;
> +dtrace_return_probe_ptr_t dtrace_return_probe_ptr;
> #endif
>
> extern void trap(struct trapframe *frame);
> @@ -239,6 +246,55 @@ trap(struct trapframe *frame)
> if (dtrace_trap_func != NULL)
> if ((*dtrace_trap_func)(frame, type))
> goto out;
> + if (type == T_DTRACE_PROBE || type == T_DTRACE_RET ||
> + type == T_BPTFLT) {
> + struct reg regs;
> +
> + regs.r_r15 = frame->tf_r15;
> + regs.r_r14 = frame->tf_r14;
> + regs.r_r13 = frame->tf_r13;
> + regs.r_r12 = frame->tf_r12;
> + regs.r_r11 = frame->tf_r11;
> + regs.r_r10 = frame->tf_r10;
> + regs.r_r9 = frame->tf_r9;
> + regs.r_r8 = frame->tf_r8;
> + regs.r_rdi = frame->tf_rdi;
> + regs.r_rsi = frame->tf_rsi;
> + regs.r_rbp = frame->tf_rbp;
> + regs.r_rbx = frame->tf_rbx;
> + regs.r_rdx = frame->tf_rdx;
> + regs.r_rcx = frame->tf_rcx;
> + regs.r_rax = frame->tf_rax;
> + regs.r_rip = frame->tf_rip;
> + regs.r_cs = frame->tf_cs;
> + regs.r_rflags = frame->tf_rflags;
> + regs.r_rsp = frame->tf_rsp;
> + regs.r_ss = frame->tf_ss;
> + if (frame->tf_flags & TF_HASSEGS) {
> + regs.r_ds = frame->tf_ds;
> + regs.r_es = frame->tf_es;
> + regs.r_fs = frame->tf_fs;
> + regs.r_gs = frame->tf_gs;
> + } else {
> + regs.r_ds = 0;
> + regs.r_es = 0;
> + regs.r_fs = 0;
> + regs.r_gs = 0;
hi, maybe use fill_regs() would more appropriate here?
--
Have fun!
chd
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