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2011-02-04 David Daney <ddaney@caviumnetworks.com>

	* mips-linux-tdep.c: Include xml-syscall.h.
	(mips_linux_get_syscall_number): New function.
	(mips_linux_init_abi): Add calls to
	mips_linux_get_syscall_number() and set_xml_syscall_file_name().
	* data-directory/Makefile.in (SYSCALLS_FILES): Add
	mips-o32-linux.xml, mips-n32-linux.xml and mips-n64-linux.xml
	* syscalls/mips-n32-linux.xml: New file.
	* syscalls/mips-n64-linux.xml: New file.
	* syscalls/mips-o32-linux.xml: New file.
gdb/testsuite/
2011-02-04 David Daney <ddaney@caviumnetworks.com>

	* gdb.base/catch-syscall.exp: Enable for mips*-linux*.
This commit is contained in:
David Daney
2011-02-04 18:34:43 +00:00
parent 9277c30c29
commit 385203ed4d
8 changed files with 1037 additions and 2 deletions
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39
gdb/mips-linux-tdep.c
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@@ -40,6 +40,7 @@
#include "mips-linux-tdep.h"
#include "glibc-tdep.h"
#include "linux-tdep.h"
#include "xml-syscall.h"
static struct target_so_ops mips_svr4_so_ops;
@@ -1207,6 +1208,38 @@ mips_linux_syscall_next_pc (struct frame_info *frame)
return pc + 4;
}
/* Return the current system call's number present in the
v0 register. When the function fails, it returns -1. */
static LONGEST
mips_linux_get_syscall_number (struct gdbarch *gdbarch,
ptid_t ptid)
{
struct regcache *regcache = get_thread_regcache (ptid);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int regsize = register_size (gdbarch, MIPS_V0_REGNUM);
/* The content of a register */
gdb_byte buf[8];
/* The result */
LONGEST ret;
/* Make sure we're in a known ABI */
gdb_assert (tdep->mips_abi == MIPS_ABI_O32
|| tdep->mips_abi == MIPS_ABI_N32
|| tdep->mips_abi == MIPS_ABI_N64);
gdb_assert (regsize <= sizeof (buf));
/* Getting the system call number from the register.
syscall number is in v0 or $2. */
regcache_cooked_read (regcache, MIPS_V0_REGNUM, buf);
ret = extract_signed_integer (buf, regsize, byte_order);
return ret;
}
/* Initialize one of the GNU/Linux OS ABIs. */
static void
@@ -1219,6 +1252,9 @@ mips_linux_init_abi (struct gdbarch_info info,
linux_init_abi (info, gdbarch);
/* Get the syscall number from the arch's register. */
set_gdbarch_get_syscall_number (gdbarch, mips_linux_get_syscall_number);
switch (abi)
{
case MIPS_ABI_O32:
@@ -1228,6 +1264,7 @@ mips_linux_init_abi (struct gdbarch_info info,
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_o32_sigframe);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_o32_rt_sigframe);
set_xml_syscall_file_name ("syscalls/mips-o32-linux.xml");
break;
case MIPS_ABI_N32:
set_gdbarch_get_longjmp_target (gdbarch,
@@ -1241,6 +1278,7 @@ mips_linux_init_abi (struct gdbarch_info info,
does not distinguish between quiet and signalling NaNs). */
set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n32_rt_sigframe);
set_xml_syscall_file_name ("syscalls/mips-n32-linux.xml");
break;
case MIPS_ABI_N64:
set_gdbarch_get_longjmp_target (gdbarch,
@@ -1254,6 +1292,7 @@ mips_linux_init_abi (struct gdbarch_info info,
does not distinguish between quiet and signalling NaNs). */
set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n64_rt_sigframe);
set_xml_syscall_file_name ("syscalls/mips-n64-linux.xml");
break;
default:
break;