[Bug sim/8388] ARM v4t LDR and LDM of pc should not change mode

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https://sourceware.org/bugzilla/show_bug.cgi?id=8388

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8d052926671eb0e8c83ffab6d15a98790c215a36

commit 8d052926671eb0e8c83ffab6d15a98790c215a36
Author: Nick Clifton <nickc@redhat.com>
Date:   Fri Mar 14 15:21:23 2014 +0000

    Add support for instruction level tracing to the ARM simulator.

        * wrapper.c (op_print): New function.
        (sim_dis_read): New function.
        (print_insn): New function - disassembles the given instruction.
        (sim_trace): Note that tracing is now allowed.
        (sim_create_inferior): Default to emulating v6.
        Initialise the disassembler machinery.
        (sim_target_parse_command_line): Add support for -t -d and -z
        options.
        (sim_target_display_usage): Note existence of -d and -z options.
        (sim_open): Parse -t -d and -z options.
        * armemu.h: Add exports of trace, disas and trace_funcs.
        Add prototype for print_insn.
        * armemu.c (ARMul_Emulate26): Add tracing code.
        Delete unused variables.
        * thumbemu (handle_v6_thumb_insn): Delete unused variable Rd.
        Move Rm variable into switch cases.
        Add tracing code.

        * armcopro.c (XScale_cp15_init): Add a return value.
        (XScale_cp13_init): Likewise.
        (XScale_cp14_init): Likewise.
        (XScale_cp15_LDC): Delete unused function.
        (XScale_cp15_STC): Likewise.
        * maverick.c: Delete comment inside comment.
        (DSPInit): Delete unused function.
        (DSPMCR4): Fix compile time warning about missing parenthesis.
        (DSPMCR5): Likewise.
        (DSPCDP6): Delete unused variable opcode2.

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=b9366cf3955d81e26537ea1932b183dbdf237361

commit b9366cf3955d81e26537ea1932b183dbdf237361
Author: David McQuillan <dmcq@tao-group.com>
Date:   Fri Mar 14 14:03:29 2014 +0000

    Prevent writes to R15 via LDR or LDM from changing the ARM/Thumb state in
pre-v5 architectures.

        PR sim/8388
        * armemu.c (WriteR15Load): New function.  Determines if the state
        can be changed upon a write to R15.
        (LoadMult): Use WriteR15Load.
        * armemu.h (WRITEDESTB): Use WriteR15Load.

-----------------------------------------------------------------------

Summary of changes:
 sim/arm/ChangeLog  |   39 +++++++++++++++++
 sim/arm/armcopro.c |   34 +++------------
 sim/arm/armemu.c   |   67 ++++++++++++++++++++++-------
 sim/arm/armemu.h   |   10 ++++-
 sim/arm/maverick.c |   23 +++-------
 sim/arm/thumbemu.c |   70 +++++++++++++++++++-----------
 sim/arm/wrapper.c  |  120 +++++++++++++++++++++++++++++++++++++++++++++++----
 7 files changed, 267 insertions(+), 96 deletions(-)

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