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Re: [RFA] 32/64 mistake in mips_find_saved_regs
- From: Andrew Cagney <ac131313 at ges dot redhat dot com>
- To: Michael Snyder <msnyder at redhat dot com>
- Cc: gdb-patches at sources dot redhat dot com
- Date: Tue, 06 Aug 2002 16:26:18 -0400
- Subject: Re: [RFA] 32/64 mistake in mips_find_saved_regs
- References: <3D4F54EA.6CA82E5E@redhat.com>
I believe n32 should be setting mips64 to 1. Can you please change that. .
As for the below, yes ok. Can you please also update the comment to
read something like:
``[Apparently] The freg_offset gives the offset to the first 64 bit saved.
When the ABI specifies 64 bit saved registers, the FREG_OFFSET
designates the first saved 64 bit register.
When the ABI specifies 32 bit saved registers, the ``64 bit saved
DOUBLE'' consists of two adjacent 32 bit registers, Hence FREG_OFFSET,
designates the address of the lower register of the register pair.
Adjust the offset so that it designates the upper register of the pair
-- i.e., the address of the first saved 32 bit register.''
I think that is more correct.
Andrew
Here is a test that should check for stack/register size, not
whether target == mips64.
Fixes four failures in callfuncs.exp, no other regressions.
2002-08-05 Michael Snyder <msnyder@redhat.com>
* mips-tdep.c (mips_find_saved_regs): Adjust stack according
to MIPS_SAVED_REGSIZE, not GDB_TARGET_IS_MIPS64. N32 is not
MIPS64, but it does save 64 bits worth of register.
Index: mips-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/mips-tdep.c,v
retrieving revision 1.88
diff -p -r1.88 mips-tdep.c
*** mips-tdep.c 1 Aug 2002 23:10:34 -0000 1.88
--- mips-tdep.c 6 Aug 2002 04:32:33 -0000
*************** mips_find_saved_regs (struct frame_info
*** 1371,1379 ****
were saved. */
reg_position = fci->frame + PROC_FREG_OFFSET (proc_desc);
! /* The freg_offset points to where the first *double* register
! is saved. So skip to the high-order word. */
! if (!GDB_TARGET_IS_MIPS64)
reg_position += MIPS_SAVED_REGSIZE;
/* Fill in the offsets for the float registers which float_mask says
--- 1371,1379 ----
were saved. */
reg_position = fci->frame + PROC_FREG_OFFSET (proc_desc);
! /* The freg_offset points to where the first *double* register is
! saved. So skip to the high-order word if saved_reg_size == 4. */
! if (MIPS_SAVED_REGSIZE == 4)
reg_position += MIPS_SAVED_REGSIZE;
/* Fill in the offsets for the float registers which float_mask says