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To avoid excessive code duplication create wrapper for fill regs

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from stack frame. Change the trap() code to use newly created function
instead of explicit regs assignment.
This commit is contained in:
Dmitry Chagin 2011-02-16 17:50:21 +00:00
parent 4fd8408ae7
commit dc4f0a9e11
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=218744
6 changed files with 18 additions and 48 deletions
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6
sys/amd64/amd64/machdep.c
View file

@ -1842,6 +1842,12 @@ fill_regs(struct thread *td, struct reg *regs)
struct trapframe *tp;
tp = td->td_frame;
return (fill_frame_regs(tp, regs));
}
int
fill_frame_regs(struct trapframe *tp, struct reg *regs)
{
regs->r_r15 = tp->tf_r15;
regs->r_r14 = tp->tf_r14;
regs->r_r13 = tp->tf_r13;

34
sys/amd64/amd64/trap.c
View file

@ -249,38 +249,8 @@ trap(struct trapframe *frame)
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;
}
fill_frame_regs(frame, &regs);
if (type == T_DTRACE_PROBE &&
dtrace_fasttrap_probe_ptr != NULL &&
dtrace_fasttrap_probe_ptr(&regs) == 0)

1
sys/amd64/include/reg.h
View file

@ -130,6 +130,7 @@ struct dbreg {
* XXX these interfaces are MI, so they should be declared in a MI place.
*/
int fill_regs(struct thread *, struct reg *);
int fill_frame_regs(struct trapframe *, struct reg *);
int set_regs(struct thread *, struct reg *);
int fill_fpregs(struct thread *, struct fpreg *);
int set_fpregs(struct thread *, struct fpreg *);

8
sys/i386/i386/machdep.c
View file

@ -3122,6 +3122,13 @@ fill_regs(struct thread *td, struct reg *regs)
tp = td->td_frame;
pcb = td->td_pcb;
regs->r_gs = pcb->pcb_gs;
return (fill_frame_regs(tp, regs));
}
int
fill_frame_regs(struct trapframe *tp, struct reg *regs)
{
regs->r_fs = tp->tf_fs;
regs->r_es = tp->tf_es;
regs->r_ds = tp->tf_ds;
@ -3137,7 +3144,6 @@ fill_regs(struct thread *td, struct reg *regs)
regs->r_eflags = tp->tf_eflags;
regs->r_esp = tp->tf_esp;
regs->r_ss = tp->tf_ss;
regs->r_gs = pcb->pcb_gs;
return (0);
}

16
sys/i386/i386/trap.c
View file

@ -271,21 +271,7 @@ trap(struct trapframe *frame)
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;
fill_frame_regs(frame, &regs);
if (type == T_DTRACE_PROBE &&
dtrace_fasttrap_probe_ptr != NULL &&
dtrace_fasttrap_probe_ptr(&regs) == 0)

1
sys/i386/include/reg.h
View file

@ -161,6 +161,7 @@ struct dbreg {
* XXX these interfaces are MI, so they should be declared in a MI place.
*/
int fill_regs(struct thread *, struct reg *);
int fill_frame_regs(struct trapframe *, struct reg *);
int set_regs(struct thread *, struct reg *);
int fill_fpregs(struct thread *, struct fpreg *);
int set_fpregs(struct thread *, struct fpreg *);