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GDB broken on MIPS targets with unmarked binaries
- From: Daniel Jacobowitz <drow at mvista dot com>
- To: gdb at sources dot redhat dot com
- Date: Wed, 5 Jun 2002 16:04:29 -0400
- Subject: GDB broken on MIPS targets with unmarked binaries
There's an interesting crash on startup in a mips-elf GDB nowadays... the
code reads:
default:
tdep->mips_abi_string = "default";
tdep->mips_default_saved_regsize = MIPS_REGSIZE;
tdep->mips_default_stack_argsize = MIPS_REGSIZE;
tdep->mips_fp_register_double = (REGISTER_VIRTUAL_SIZE (FP0_REGNUM) == 8);
tdep->mips_last_arg_regnum = A0_REGNUM + 8 - 1;
tdep->mips_last_fp_arg_regnum = FPA0_REGNUM + 8 - 1;
tdep->mips_regs_have_home_p = 1;
tdep->gdb_target_is_mips64 = 0;
tdep->default_mask_address_p = 0;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
Something brought in recently, probably by the OS ABI changes if I had to
guess, is causing the check of REGISTER_VIRTUAL_SIZE to fail. I've no idea
why. Compiling a mips-elf (not mips-linux, which sets MIPS_DEFAULT_ABI) and
running gdb on an unmarked ELF binary reproduces this.
--
Daniel Jacobowitz Carnegie Mellon University
MontaVista Software Debian GNU/Linux Developer