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Code Issues Releases Activity

Call the necessary DTrace function pointers when we have different kinds

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of traps.

Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Rui Paulo 2010-08-25 09:10:32 +00:00
parent 5cdefefaed
commit 0bc1991a4a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=211804
2 changed files with 91 additions and 0 deletions
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56
sys/amd64/amd64/trap.c
View File

@ -109,6 +109,13 @@ dtrace_doubletrap_func_t dtrace_doubletrap_func;
* 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;
}
if (type == T_DTRACE_PROBE &&
dtrace_fasttrap_probe_ptr != NULL &&
dtrace_fasttrap_probe_ptr(&regs) == 0)
goto out;
if (type == T_BPTFLT &&
dtrace_pid_probe_ptr != NULL &&
dtrace_pid_probe_ptr(&regs) == 0)
goto out;
if (type == T_DTRACE_RET &&
dtrace_return_probe_ptr != NULL &&
dtrace_return_probe_ptr(&regs) == 0)
goto out;
}
#endif
if ((frame->tf_rflags & PSL_I) == 0) {

35
sys/i386/i386/trap.c
View File

@ -118,6 +118,9 @@ dtrace_doubletrap_func_t dtrace_doubletrap_func;
* implementation opaque.
*/
systrace_probe_func_t systrace_probe_func;
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);
@ -260,6 +263,38 @@ trap(struct trapframe *frame)
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_fs = frame->tf_fs;
regs.r_es = frame->tf_es;
regs.r_ds = frame->tf_ds;
regs.r_edi = frame->tf_edi;
regs.r_esi = frame->tf_esi;
regs.r_ebp = frame->tf_ebp;
regs.r_ebx = frame->tf_ebx;
regs.r_edx = frame->tf_edx;
regs.r_ecx = frame->tf_ecx;
regs.r_eax = frame->tf_eax;
regs.r_eip = frame->tf_eip;
regs.r_cs = frame->tf_cs;
regs.r_eflags = frame->tf_eflags;
regs.r_esp = frame->tf_esp;
regs.r_ss = frame->tf_ss;
if (type == T_DTRACE_PROBE &&
dtrace_fasttrap_probe_ptr != NULL &&
dtrace_fasttrap_probe_ptr(&regs) == 0)
goto out;
if (type == T_BPTFLT &&
dtrace_pid_probe_ptr != NULL &&
dtrace_pid_probe_ptr(&regs) == 0)
goto out;
if (type == T_DTRACE_RET &&
dtrace_return_probe_ptr != NULL &&
dtrace_return_probe_ptr(&regs) == 0)
goto out;
}
#endif
if ((frame->tf_eflags & PSL_I) == 0) {