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path: root/drivers/staging/android/fiq_debugger/fiq_debugger_arm64.c
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Diffstat (limited to 'drivers/staging/android/fiq_debugger/fiq_debugger_arm64.c')
-rw-r--r--drivers/staging/android/fiq_debugger/fiq_debugger_arm64.c202
1 files changed, 0 insertions, 202 deletions
diff --git a/drivers/staging/android/fiq_debugger/fiq_debugger_arm64.c b/drivers/staging/android/fiq_debugger/fiq_debugger_arm64.c
deleted file mode 100644
index 99c6584fcfa5..000000000000
--- a/drivers/staging/android/fiq_debugger/fiq_debugger_arm64.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- * Copyright (C) 2014 Google, Inc.
- * Author: Colin Cross <ccross@android.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/ptrace.h>
-#include <asm/stacktrace.h>
-
-#include "fiq_debugger_priv.h"
-
-static char *mode_name(const struct pt_regs *regs)
-{
- if (compat_user_mode(regs)) {
- return "USR";
- } else {
- switch (processor_mode(regs)) {
- case PSR_MODE_EL0t: return "EL0t";
- case PSR_MODE_EL1t: return "EL1t";
- case PSR_MODE_EL1h: return "EL1h";
- case PSR_MODE_EL2t: return "EL2t";
- case PSR_MODE_EL2h: return "EL2h";
- default: return "???";
- }
- }
-}
-
-void fiq_debugger_dump_pc(struct fiq_debugger_output *output,
- const struct pt_regs *regs)
-{
- output->printf(output, " pc %016lx cpsr %08lx mode %s\n",
- regs->pc, regs->pstate, mode_name(regs));
-}
-
-void fiq_debugger_dump_regs_aarch32(struct fiq_debugger_output *output,
- const struct pt_regs *regs)
-{
- output->printf(output, " r0 %08x r1 %08x r2 %08x r3 %08x\n",
- regs->compat_usr(0), regs->compat_usr(1),
- regs->compat_usr(2), regs->compat_usr(3));
- output->printf(output, " r4 %08x r5 %08x r6 %08x r7 %08x\n",
- regs->compat_usr(4), regs->compat_usr(5),
- regs->compat_usr(6), regs->compat_usr(7));
- output->printf(output, " r8 %08x r9 %08x r10 %08x r11 %08x\n",
- regs->compat_usr(8), regs->compat_usr(9),
- regs->compat_usr(10), regs->compat_usr(11));
- output->printf(output, " ip %08x sp %08x lr %08x pc %08x\n",
- regs->compat_usr(12), regs->compat_sp,
- regs->compat_lr, regs->pc);
- output->printf(output, " cpsr %08x (%s)\n",
- regs->pstate, mode_name(regs));
-}
-
-void fiq_debugger_dump_regs_aarch64(struct fiq_debugger_output *output,
- const struct pt_regs *regs)
-{
-
- output->printf(output, " x0 %016lx x1 %016lx\n",
- regs->regs[0], regs->regs[1]);
- output->printf(output, " x2 %016lx x3 %016lx\n",
- regs->regs[2], regs->regs[3]);
- output->printf(output, " x4 %016lx x5 %016lx\n",
- regs->regs[4], regs->regs[5]);
- output->printf(output, " x6 %016lx x7 %016lx\n",
- regs->regs[6], regs->regs[7]);
- output->printf(output, " x8 %016lx x9 %016lx\n",
- regs->regs[8], regs->regs[9]);
- output->printf(output, " x10 %016lx x11 %016lx\n",
- regs->regs[10], regs->regs[11]);
- output->printf(output, " x12 %016lx x13 %016lx\n",
- regs->regs[12], regs->regs[13]);
- output->printf(output, " x14 %016lx x15 %016lx\n",
- regs->regs[14], regs->regs[15]);
- output->printf(output, " x16 %016lx x17 %016lx\n",
- regs->regs[16], regs->regs[17]);
- output->printf(output, " x18 %016lx x19 %016lx\n",
- regs->regs[18], regs->regs[19]);
- output->printf(output, " x20 %016lx x21 %016lx\n",
- regs->regs[20], regs->regs[21]);
- output->printf(output, " x22 %016lx x23 %016lx\n",
- regs->regs[22], regs->regs[23]);
- output->printf(output, " x24 %016lx x25 %016lx\n",
- regs->regs[24], regs->regs[25]);
- output->printf(output, " x26 %016lx x27 %016lx\n",
- regs->regs[26], regs->regs[27]);
- output->printf(output, " x28 %016lx x29 %016lx\n",
- regs->regs[28], regs->regs[29]);
- output->printf(output, " x30 %016lx sp %016lx\n",
- regs->regs[30], regs->sp);
- output->printf(output, " pc %016lx cpsr %08x (%s)\n",
- regs->pc, regs->pstate, mode_name(regs));
-}
-
-void fiq_debugger_dump_regs(struct fiq_debugger_output *output,
- const struct pt_regs *regs)
-{
- if (compat_user_mode(regs))
- fiq_debugger_dump_regs_aarch32(output, regs);
- else
- fiq_debugger_dump_regs_aarch64(output, regs);
-}
-
-#define READ_SPECIAL_REG(x) ({ \
- u64 val; \
- asm volatile ("mrs %0, " # x : "=r"(val)); \
- val; \
-})
-
-void fiq_debugger_dump_allregs(struct fiq_debugger_output *output,
- const struct pt_regs *regs)
-{
- u32 pstate = READ_SPECIAL_REG(CurrentEl);
- bool in_el2 = (pstate & PSR_MODE_MASK) >= PSR_MODE_EL2t;
-
- fiq_debugger_dump_regs(output, regs);
-
- output->printf(output, " sp_el0 %016lx\n",
- READ_SPECIAL_REG(sp_el0));
-
- if (in_el2)
- output->printf(output, " sp_el1 %016lx\n",
- READ_SPECIAL_REG(sp_el1));
-
- output->printf(output, " elr_el1 %016lx\n",
- READ_SPECIAL_REG(elr_el1));
-
- output->printf(output, " spsr_el1 %08lx\n",
- READ_SPECIAL_REG(spsr_el1));
-
- if (in_el2) {
- output->printf(output, " spsr_irq %08lx\n",
- READ_SPECIAL_REG(spsr_irq));
- output->printf(output, " spsr_abt %08lx\n",
- READ_SPECIAL_REG(spsr_abt));
- output->printf(output, " spsr_und %08lx\n",
- READ_SPECIAL_REG(spsr_und));
- output->printf(output, " spsr_fiq %08lx\n",
- READ_SPECIAL_REG(spsr_fiq));
- output->printf(output, " spsr_el2 %08lx\n",
- READ_SPECIAL_REG(elr_el2));
- output->printf(output, " spsr_el2 %08lx\n",
- READ_SPECIAL_REG(spsr_el2));
- }
-}
-
-struct stacktrace_state {
- struct fiq_debugger_output *output;
- unsigned int depth;
-};
-
-static int report_trace(struct stackframe *frame, void *d)
-{
- struct stacktrace_state *sts = d;
-
- if (sts->depth) {
- sts->output->printf(sts->output, "%pF:\n", frame->pc);
- sts->output->printf(sts->output,
- " pc %016lx sp %016lx fp %016lx\n",
- frame->pc, frame->sp, frame->fp);
- sts->depth--;
- return 0;
- }
- sts->output->printf(sts->output, " ...\n");
-
- return sts->depth == 0;
-}
-
-void fiq_debugger_dump_stacktrace(struct fiq_debugger_output *output,
- const struct pt_regs *regs, unsigned int depth, void *ssp)
-{
- struct thread_info *real_thread_info = THREAD_INFO(ssp);
- struct stacktrace_state sts;
-
- sts.depth = depth;
- sts.output = output;
- *current_thread_info() = *real_thread_info;
-
- if (!current)
- output->printf(output, "current NULL\n");
- else
- output->printf(output, "pid: %d comm: %s\n",
- current->pid, current->comm);
- fiq_debugger_dump_regs(output, regs);
-
- if (!user_mode(regs)) {
- struct stackframe frame;
- frame.fp = regs->regs[29];
- frame.sp = regs->sp;
- frame.pc = regs->pc;
- output->printf(output, "\n");
- walk_stackframe(&frame, report_trace, &sts);
- }
-}
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