98 lines
3.6 KiB
Diff
98 lines
3.6 KiB
Diff
diff -up gdb-6.8/gdb/sparc64-linux-tdep.c.sparc gdb-6.8/gdb/sparc64-linux-tdep.c
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--- gdb-6.8/gdb/sparc64-linux-tdep.c.sparc 2008-01-01 16:53:13.000000000 -0600
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+++ gdb-6.8/gdb/sparc64-linux-tdep.c 2008-05-15 14:08:57.000000000 -0500
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@@ -174,6 +174,30 @@ sparc64_linux_collect_core_fpregset (con
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sparc64_collect_fpregset (regcache, regnum, fpregs);
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}
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+/* Set the program counter for process PTID to PC. */
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+
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+static void
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+sparc64_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
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+{
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+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
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+ ULONGEST state;
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+
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+ regcache_cooked_write_unsigned (regcache, tdep->pc_regnum, pc);
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+ regcache_cooked_write_unsigned (regcache, tdep->npc_regnum, pc + 4);
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+
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+ /* Clear the "in syscall" bit to prevent the kernel from
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+ messing with the PCs we just installed, if we happen to be
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+ within an interrupted system call that the kernel wants to
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+ restart.
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+
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+ Note that after we return from the dummy call, the TSTATE et al.
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+ registers will be automatically restored, and the kernel
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+ continues to restart the system call at this point. */
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+ regcache_cooked_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
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+ state &= ~((ULONGEST)0x20);
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+ regcache_cooked_write_unsigned (regcache, SPARC64_STATE_REGNUM, state);
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+}
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+
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static void
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@@ -211,6 +235,8 @@ sparc64_linux_init_abi (struct gdbarch_i
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/* Make sure we can single-step over signal return system calls. */
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tdep->step_trap = sparc64_linux_step_trap;
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+
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+ set_gdbarch_write_pc (gdbarch, sparc64_linux_write_pc);
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}
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diff -up gdb-6.8/gdb/sparc-linux-tdep.c.sparc gdb-6.8/gdb/sparc-linux-tdep.c
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--- gdb-6.8/gdb/sparc-linux-tdep.c.sparc 2008-01-01 16:53:13.000000000 -0600
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+++ gdb-6.8/gdb/sparc-linux-tdep.c 2008-05-15 14:08:12.000000000 -0500
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@@ -211,6 +211,30 @@ sparc32_linux_collect_core_fpregset (con
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sparc32_collect_fpregset (regcache, regnum, fpregs);
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}
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+/* Set the program counter for process PTID to PC. */
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+
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+static void
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+sparc_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
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+{
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+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
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+ ULONGEST psr;
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+
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+ regcache_cooked_write_unsigned (regcache, tdep->pc_regnum, pc);
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+ regcache_cooked_write_unsigned (regcache, tdep->npc_regnum, pc + 4);
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+
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+ /* Clear the "in syscall" bit to prevent the kernel from
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+ messing with the PCs we just installed, if we happen to be
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+ within an interrupted system call that the kernel wants to
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+ restart.
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+
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+ Note that after we return from the dummy call, the PSR et al.
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+ registers will be automatically restored, and the kernel
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+ continues to restart the system call at this point. */
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+ regcache_cooked_read_unsigned (regcache, SPARC32_PSR_REGNUM, &psr);
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+ psr &= ~0x000004000;
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+ regcache_cooked_write_unsigned (regcache, SPARC32_PSR_REGNUM, psr);
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+}
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+
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static void
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@@ -238,10 +262,6 @@ sparc32_linux_init_abi (struct gdbarch_i
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prologue analysis. */
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tdep->plt_entry_size = 12;
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- /* GNU/Linux doesn't support the 128-bit `long double' from the psABI. */
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- set_gdbarch_long_double_bit (gdbarch, 64);
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- set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
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-
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/* Enable TLS support. */
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set_gdbarch_fetch_tls_load_module_address (gdbarch,
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svr4_fetch_objfile_link_map);
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@@ -251,6 +271,8 @@ sparc32_linux_init_abi (struct gdbarch_i
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/* Hook in the DWARF CFI frame unwinder. */
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frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
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+
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+ set_gdbarch_write_pc (gdbarch, sparc_linux_write_pc);
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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