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RISC-V: Give stack slots same align as XLEN. 

For riscv64-linux target, fixes
FAIL: gdb.base/gnu_vector.exp: call add_many_charvecs

Ensure that stack slots are always the same alignment as XLEN by rounding
up arg align to xlen.

	gdb/
	* riscv-tdep.c (riscv_call_arg_scalar_int): Use std::min when
	setting len.  New local align, set to max of arg align and xlen,
	and pass to first riscv_assign_stack_location call.
This commit is contained in:
Jim Wilson 2018-11-14 14:51:40 -08:00
parent dd9168931f
commit 174f8ac8d4
2 changed files with 9 additions and 2 deletions
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6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2018-11-14 Jim Wilson <jimw@sifive.com>
* riscv-tdep.c (riscv_call_arg_scalar_int): Use std::min when
setting len. New local align, set to max of arg align and xlen,
and pass to first riscv_assign_stack_location call.
2018-11-12 Simon Marchi <simon.marchi@polymtl.ca>
* skip.c (complete_skip_number): New function.

5
gdb/riscv-tdep.c
View File

@ -1925,12 +1925,13 @@ riscv_call_arg_scalar_int (struct riscv_arg_info *ainfo,
}
else
{
int len = (ainfo->length > cinfo->xlen) ? cinfo->xlen : ainfo->length;
int len = std::min (ainfo->length, cinfo->xlen);
int align = std::max (ainfo->align, cinfo->xlen);
if (!riscv_assign_reg_location (&ainfo->argloc[0],
&cinfo->int_regs, len, 0))
riscv_assign_stack_location (&ainfo->argloc[0],
&cinfo->memory, len, ainfo->align);
&cinfo->memory, len, align);
if (len < ainfo->length)
{