diff options
Diffstat (limited to 'gdb/ppc-linux-tdep.c')
| -rw-r--r-- | gdb/ppc-linux-tdep.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c index f0f802c..d8211ed 100644 --- a/gdb/ppc-linux-tdep.c +++ b/gdb/ppc-linux-tdep.c @@ -47,6 +47,7 @@ #include "exceptions.h" #include "arch-utils.h" #include "spu-tdep.h" +#include "xml-syscall.h" #include "features/rs6000/powerpc-32l.c" #include "features/rs6000/powerpc-altivec32l.c" @@ -64,6 +65,9 @@ #include "features/rs6000/powerpc-isa205-vsx64l.c" #include "features/rs6000/powerpc-e500l.c" +/* The syscall's XML filename for PPC and PPC64. */ +#define XML_SYSCALL_FILENAME_PPC "syscalls/ppc-linux.xml" +#define XML_SYSCALL_FILENAME_PPC64 "syscalls/ppc64-linux.xml" /* ppc_linux_memory_remove_breakpoints attempts to remove a breakpoint in much the same fashion as memory_remove_breakpoint in mem-break.c, @@ -1066,6 +1070,39 @@ ppc_linux_trap_reg_p (struct gdbarch *gdbarch) && register_size (gdbarch, PPC_TRAP_REGNUM) > 0; } +/* Return the current system call's number present in the + r0 register. When the function fails, it returns -1. */ +static LONGEST +ppc_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); + struct cleanup *cleanbuf; + /* The content of a register */ + gdb_byte *buf; + /* The result */ + LONGEST ret; + + /* Make sure we're in a 32- or 64-bit machine */ + gdb_assert (tdep->wordsize == 4 || tdep->wordsize == 8); + + buf = (gdb_byte *) xmalloc (tdep->wordsize * sizeof (gdb_byte)); + + cleanbuf = make_cleanup (xfree, buf); + + /* Getting the system call number from the register. + When dealing with PowerPC architecture, this information + is stored at 0th register. */ + regcache_cooked_read (regcache, tdep->ppc_gp0_regnum, buf); + + ret = extract_signed_integer (buf, tdep->wordsize, byte_order); + do_cleanups (cleanbuf); + + return ret; +} + static void ppc_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) { @@ -1435,6 +1472,9 @@ ppc_linux_init_abi (struct gdbarch_info info, /* Handle inferior calls during interrupted system calls. */ set_gdbarch_write_pc (gdbarch, ppc_linux_write_pc); + /* Get the syscall number from the arch's register. */ + set_gdbarch_get_syscall_number (gdbarch, ppc_linux_get_syscall_number); + if (tdep->wordsize == 4) { /* Until November 2001, gcc did not comply with the 32 bit SysV @@ -1454,6 +1494,9 @@ ppc_linux_init_abi (struct gdbarch_info info, set_solib_svr4_fetch_link_map_offsets (gdbarch, svr4_ilp32_fetch_link_map_offsets); + /* Setting the correct XML syscall filename. */ + set_xml_syscall_file_name (XML_SYSCALL_FILENAME_PPC); + /* Trampolines. */ tramp_frame_prepend_unwinder (gdbarch, &ppc32_linux_sigaction_tramp_frame); tramp_frame_prepend_unwinder (gdbarch, &ppc32_linux_sighandler_tramp_frame); @@ -1477,6 +1520,9 @@ ppc_linux_init_abi (struct gdbarch_info info, set_solib_svr4_fetch_link_map_offsets (gdbarch, svr4_lp64_fetch_link_map_offsets); + /* Setting the correct XML syscall filename. */ + set_xml_syscall_file_name (XML_SYSCALL_FILENAME_PPC64); + /* Trampolines. */ tramp_frame_prepend_unwinder (gdbarch, &ppc64_linux_sigaction_tramp_frame); tramp_frame_prepend_unwinder (gdbarch, &ppc64_linux_sighandler_tramp_frame); |