diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2014-05-14 19:35:15 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2015-06-19 18:09:40 +0530 |
| commit | 6ffb9c8c5f59a50779109e8b0a2e1bdd4b9be5c5 (patch) | |
| tree | a6c124d9250e63241544227095df7b1c3a26ef56 /arch/arc/kernel/ptrace.c | |
| parent | 5a343b9fe22995c43b1209b0b63ea0fa2824cbae (diff) | |
| download | linux-6ffb9c8c5f59a50779109e8b0a2e1bdd4b9be5c5.tar.bz2 | |
ARC: Make way for pt_regs != user_regs_struct
These have been register compatible so far. However ARCv2 mandates
different pt_regs layout (due to h/w auto save). To keep pt_regs same
for both, we start by removing the assumption - used mainly for block
copies between the 2 structs in signal handling and ptrace
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/kernel/ptrace.c')
| -rw-r--r-- | arch/arc/kernel/ptrace.c | 90 |
1 files changed, 83 insertions, 7 deletions
diff --git a/arch/arc/kernel/ptrace.c b/arch/arc/kernel/ptrace.c index 13b3ffb27a38..4dd9e3a8c2da 100644 --- a/arch/arc/kernel/ptrace.c +++ b/arch/arc/kernel/ptrace.c @@ -47,10 +47,47 @@ static int genregs_get(struct task_struct *target, offsetof(struct user_regs_struct, LOC) + 4); REG_O_ZERO(pad); - REG_O_CHUNK(scratch, callee, ptregs); + REG_O_ONE(scratch.bta, &ptregs->bta); + REG_O_ONE(scratch.lp_start, &ptregs->lp_start); + REG_O_ONE(scratch.lp_end, &ptregs->lp_end); + REG_O_ONE(scratch.lp_count, &ptregs->lp_count); + REG_O_ONE(scratch.status32, &ptregs->status32); + REG_O_ONE(scratch.ret, &ptregs->ret); + REG_O_ONE(scratch.blink, &ptregs->blink); + REG_O_ONE(scratch.fp, &ptregs->fp); + REG_O_ONE(scratch.gp, &ptregs->r26); + REG_O_ONE(scratch.r12, &ptregs->r12); + REG_O_ONE(scratch.r11, &ptregs->r11); + REG_O_ONE(scratch.r10, &ptregs->r10); + REG_O_ONE(scratch.r9, &ptregs->r9); + REG_O_ONE(scratch.r8, &ptregs->r8); + REG_O_ONE(scratch.r7, &ptregs->r7); + REG_O_ONE(scratch.r6, &ptregs->r6); + REG_O_ONE(scratch.r5, &ptregs->r5); + REG_O_ONE(scratch.r4, &ptregs->r4); + REG_O_ONE(scratch.r3, &ptregs->r3); + REG_O_ONE(scratch.r2, &ptregs->r2); + REG_O_ONE(scratch.r1, &ptregs->r1); + REG_O_ONE(scratch.r0, &ptregs->r0); + REG_O_ONE(scratch.sp, &ptregs->sp); + REG_O_ZERO(pad2); - REG_O_CHUNK(callee, efa, cregs); - REG_O_CHUNK(efa, stop_pc, &target->thread.fault_address); + + REG_O_ONE(callee.r25, &cregs->r25); + REG_O_ONE(callee.r24, &cregs->r24); + REG_O_ONE(callee.r23, &cregs->r23); + REG_O_ONE(callee.r22, &cregs->r22); + REG_O_ONE(callee.r21, &cregs->r21); + REG_O_ONE(callee.r20, &cregs->r20); + REG_O_ONE(callee.r19, &cregs->r19); + REG_O_ONE(callee.r18, &cregs->r18); + REG_O_ONE(callee.r17, &cregs->r17); + REG_O_ONE(callee.r16, &cregs->r16); + REG_O_ONE(callee.r15, &cregs->r15); + REG_O_ONE(callee.r14, &cregs->r14); + REG_O_ONE(callee.r13, &cregs->r13); + + REG_O_ONE(efa, &target->thread.fault_address); if (!ret) { if (in_brkpt_trap(ptregs)) { @@ -97,12 +134,51 @@ static int genregs_set(struct task_struct *target, offsetof(struct user_regs_struct, LOC) + 4); REG_IGNORE_ONE(pad); - /* TBD: disallow updates to STATUS32 etc*/ - REG_IN_CHUNK(scratch, pad2, ptregs); /* pt_regs[bta..sp] */ + + REG_IN_ONE(scratch.bta, &ptregs->bta); + REG_IN_ONE(scratch.lp_start, &ptregs->lp_start); + REG_IN_ONE(scratch.lp_end, &ptregs->lp_end); + REG_IN_ONE(scratch.lp_count, &ptregs->lp_count); + + REG_IGNORE_ONE(scratch.status32); + + REG_IN_ONE(scratch.ret, &ptregs->ret); + REG_IN_ONE(scratch.blink, &ptregs->blink); + REG_IN_ONE(scratch.fp, &ptregs->fp); + REG_IN_ONE(scratch.gp, &ptregs->r26); + REG_IN_ONE(scratch.r12, &ptregs->r12); + REG_IN_ONE(scratch.r11, &ptregs->r11); + REG_IN_ONE(scratch.r10, &ptregs->r10); + REG_IN_ONE(scratch.r9, &ptregs->r9); + REG_IN_ONE(scratch.r8, &ptregs->r8); + REG_IN_ONE(scratch.r7, &ptregs->r7); + REG_IN_ONE(scratch.r6, &ptregs->r6); + REG_IN_ONE(scratch.r5, &ptregs->r5); + REG_IN_ONE(scratch.r4, &ptregs->r4); + REG_IN_ONE(scratch.r3, &ptregs->r3); + REG_IN_ONE(scratch.r2, &ptregs->r2); + REG_IN_ONE(scratch.r1, &ptregs->r1); + REG_IN_ONE(scratch.r0, &ptregs->r0); + REG_IN_ONE(scratch.sp, &ptregs->sp); + REG_IGNORE_ONE(pad2); - REG_IN_CHUNK(callee, efa, cregs); /* callee_regs[r25..r13] */ + + REG_IN_ONE(callee.r25, &cregs->r25); + REG_IN_ONE(callee.r24, &cregs->r24); + REG_IN_ONE(callee.r23, &cregs->r23); + REG_IN_ONE(callee.r22, &cregs->r22); + REG_IN_ONE(callee.r21, &cregs->r21); + REG_IN_ONE(callee.r20, &cregs->r20); + REG_IN_ONE(callee.r19, &cregs->r19); + REG_IN_ONE(callee.r18, &cregs->r18); + REG_IN_ONE(callee.r17, &cregs->r17); + REG_IN_ONE(callee.r16, &cregs->r16); + REG_IN_ONE(callee.r15, &cregs->r15); + REG_IN_ONE(callee.r14, &cregs->r14); + REG_IN_ONE(callee.r13, &cregs->r13); + REG_IGNORE_ONE(efa); /* efa update invalid */ - REG_IGNORE_ONE(stop_pc); /* PC updated via @ret */ + REG_IGNORE_ONE(stop_pc); /* PC updated via @ret */ return ret; } |