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Add linux_get_hwcap

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Tidy up calls to read HWCAP (and HWCAP2) by adding common functions,
removing the PPC and AArch64 specific versions.

The only function difference is in aarch64_linux_core_read_description - if
the hwcap read fails it now return a valid description instead of nullptr.

gdb/ChangeLog:

2019-03-25  Alan Hayward  <alan.hayward@arm.com>

	* aarch64-linux-nat.c (aarch64_linux_nat_target::read_description):
	Call linux_get_hwcap.
	* aarch64-linux-tdep.c (aarch64_linux_core_read_description):
	Likewise.
	(aarch64_linux_get_hwcap): Remove function.
	* aarch64-linux-tdep.h (aarch64_linux_get_hwcap): Remove
	declaration.
	* arm-linux-nat.c (arm_linux_nat_target::read_description):Call
	linux_get_hwcap.
	* arm-linux-tdep.c (arm_linux_core_read_description): Likewise.
	* linux-tdep.c (linux_get_hwcap): Add function.
	(linux_get_hwcap2): Likewise.
	* linux-tdep.h (linux_get_hwcap): Add declaration.
	(linux_get_hwcap2): Likewise.
	* ppc-linux-nat.c (ppc_linux_get_hwcap): Remove function.
	(ppc_linux_get_hwcap2): Likewise.
	(ppc_linux_nat_target::region_ok_for_hw_watchpoint): Call
	linux_get_hwcap.
	(ppc_linux_nat_target::insert_watchpoint): Likewise.
	(ppc_linux_nat_target::watchpoint_addr_within_range): Likewise.
	(ppc_linux_nat_target::read_description): Likewise.
	* ppc-linux-tdep.c (ppc_linux_core_read_description): Likewise.
	* s390-linux-nat.c: Likewise.
	* s390-linux-tdep.c (s390_core_read_description): Likewise.
This commit is contained in:
Alan Hayward
2019-03-25 16:48:03 +00:00
parent 796d6298bb
commit 0f83012ea0
12 changed files with 75 additions and 71 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
gdb/linux-tdep.c
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@ -2462,6 +2462,28 @@ linux_displaced_step_location (struct gdbarch *gdbarch)
return addr;
}
/* See linux-tdep.h. */
CORE_ADDR
linux_get_hwcap (struct target_ops *target)
{
CORE_ADDR field;
if (target_auxv_search (target, AT_HWCAP, &field) != 1)
return 0;
return field;
}
/* See linux-tdep.h. */
CORE_ADDR
linux_get_hwcap2 (struct target_ops *target)
{
CORE_ADDR field;
if (target_auxv_search (target, AT_HWCAP2, &field) != 1)
return 0;
return field;
}
/* Display whether the gcore command is using the
/proc/PID/coredump_filter file. */