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Re: RFA/arm-linux: Add support for big endian
- From: Daniel Jacobowitz <drow at mvista dot com>
- To: gdb-patches at sources dot redhat dot com
- Date: Wed, 13 Aug 2003 18:15:51 -0400
- Subject: Re: RFA/arm-linux: Add support for big endian
- References: <20030715181213.GA3210@nevyn.them.org>
On Tue, Jul 15, 2003 at 02:12:13PM -0400, Daniel Jacobowitz wrote:
> There's really no excuse for how many times I've meant to post this patch
> and forgotten about it. This is all it takes to support big-endian
> ARM GNU/Linux targets - just put the breakpoint instruction in the right
> endianness.
>
> OK?
Ping?
> 2003-07-15 Daniel Jacobowitz <drow@mvista.com>
>
> * arm-linux-tdep.c (arm_linux_arm_be_breakpoint): New.
> (arm_linux_init_abi): Use arm_linux_arm_be_breakpoint.
>
> Index: gdb-6.0/gdb/arm-linux-tdep.c
> ===================================================================
> --- gdb-6.0.orig/gdb/arm-linux-tdep.c 2003-07-07 12:04:45.000000000 -0400
> +++ gdb-6.0/gdb/arm-linux-tdep.c 2003-07-07 15:02:45.000000000 -0400
> @@ -47,6 +47,8 @@
>
> static const char arm_linux_arm_le_breakpoint[] = {0x01,0x00,0x9f,0xef};
>
> +static const char arm_linux_arm_be_breakpoint[] = {0xef, 0x9f, 0x00, 0x01};
> +
> /* DEPRECATED_CALL_DUMMY_WORDS:
> This sequence of words is the instructions
>
> @@ -768,7 +770,10 @@ arm_linux_init_abi (struct gdbarch_info
> struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
>
> tdep->lowest_pc = 0x8000;
> - tdep->arm_breakpoint = arm_linux_arm_le_breakpoint;
> + if (info.byte_order == BFD_ENDIAN_BIG)
> + tdep->arm_breakpoint = arm_linux_arm_be_breakpoint;
> + else
> + tdep->arm_breakpoint = arm_linux_arm_le_breakpoint;
> tdep->arm_breakpoint_size = sizeof (arm_linux_arm_le_breakpoint);
>
> tdep->fp_model = ARM_FLOAT_FPA;
>
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer