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authorPedro Alves <palves@redhat.com>2010-06-14 22:16:09 +0000
committerPedro Alves <palves@redhat.com>2010-06-14 22:16:09 +0000
commit6a271cae85843023ce9c046c040b643158d85054 (patch)
tree2914b912497d6af43dbbd6d6294d0c3a460aabdd /gdb/gdbserver/linux-i386-ipa.c
parent6b13a44ce0abe26636e946e07399083968f3ee7e (diff)
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2010-06-14 Pedro Alves <pedro@codesourcery.com> * NEWS: Mention GDBserver's JIT compilation of tracepoint bytecode. gdb/gdbserver/ 2010-06-14 Stan Shebs <stan@codesourcery.com> Pedro Alves <pedro@codesourcery.com> Bytecode compiler. * linux-x86-low.c: Include limits.h. (add_insns): New. (always_true): New. (EMIT_ASM): New. (EMIT_ASM32): New. (amd64_emit_prologue, amd64_emit_epilogue, amd64_emit_add) (amd64_emit_sub, amd64_emit_mul, amd64_emit_lsh) (amd64_emit_rsh_signed, amd64_emit_rsh_unsigned, amd64_emit_ext, (amd64_emit_log_not, amd64_emit_bit_and, amd64_emit_bit_or) (amd64_emit_bit_xor, amd64_emit_bit_not, amd64_emit_equal, (amd64_emit_less_signed, amd64_emit_less_unsigned, amd64_emit_ref, (amd64_emit_if_goto, amd64_emit_goto, amd64_write_goto_address) (amd64_emit_const, amd64_emit_call, amd64_emit_reg) (amd64_emit_pop, amd64_emit_stack_flush, amd64_emit_zero_ext) (amd64_emit_swap, amd64_emit_stack_adjust, amd64_emit_int_call_1) (amd64_emit_void_call_2): New. (amd64_emit_ops): New. (i386_emit_prologue, i386_emit_epilogue, i386_emit_add) (i386_emit_sub,i386_emit_mul, i386_emit_lsh, i386_emit_rsh_signed) (i386_emit_rsh_unsigned, i386_emit_ext, i386_emit_log_not) (i386_emit_bit_and, i386_emit_bit_or, i386_emit_bit_xor) (i386_emit_bit_not, i386_emit_equal, i386_emit_less_signed) (i386_emit_less_unsigned, i386_emit_ref, i386_emit_if_goto) (i386_emit_goto, i386_write_goto_address, i386_emit_const) (i386_emit_call, i386_emit_reg, i386_emit_pop) (i386_emit_stack_flush, i386_emit_zero_ext, i386_emit_swap) (i386_emit_stack_adjust, i386_emit_int_call_1) (i386_emit_void_call_2): New. (i386_emit_ops): New. (x86_emit_ops): New. (the_low_target): Install x86_emit_ops. * server.h (struct emit_ops): New. (get_raw_reg_func_addr): Declare. (current_insn_ptr, emit_error): Declare. * tracepoint.c (get_raw_reg, get_trace_state_variable_value) (set_trace_state_variable_value): New defines. (struct ipa_sym_addresses): New fields addr_get_raw_reg, addr_get_trace_state_variable_value and addr_set_trace_state_variable_value. (symbol_list): New fields for get_raw_reg, get_trace_state_variable_value and set_trace_state_variable_value. (condfn): New typedef. (struct tracepoint): New field `compiled_cond'. (do_action_at_tracepoint): Clear compiled_cond. (get_trace_state_variable_value, set_trace_state_variable_value): Export in the IPA. (condition_true_at_tracepoint): If there's a compiled condition, run that. (current_insn_ptr, emit_error): New globals. (struct bytecode_address): New. (get_raw_reg_func_addr): New. (emit_prologue, emit_epilogue, emit_add, emit_sub, emit_mul) (emit_lsh, emit_rsh_signed, emit_rsh_unsigned, emit_ext) (emit_log_not, emit_bit_and, emit_bit_or, emit_bit_xor) (emit_bit_not, emit_equal, emit_less_signed, emit_less_unsigned) (emit_ref, emit_if_goto, emit_goto, write_goto_address, emit_const) (emit_reg, emit_pop, emit_stack_flush, emit_zero_ext, emit_swap) (emit_stack_adjust, emit_int_call_1, emit_void_call_2): New. (compile_tracepoint_condition, compile_bytecodes): New. * target.h (emit_ops): Forward declare. (struct target_ops): New field emit_ops. (target_emit_ops): New. * linux-amd64-ipa.c (gdb_agent_get_raw_reg): New. * linux-i386-ipa.c (gdb_agent_get_raw_reg): New. * linux-low.c (linux_emit_ops): New. (linux_target_ops): Install it. * linux-low.h (struct linux_target_ops): New field emit_ops.
Diffstat (limited to 'gdb/gdbserver/linux-i386-ipa.c')
-rw-r--r--gdb/gdbserver/linux-i386-ipa.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/gdb/gdbserver/linux-i386-ipa.c b/gdb/gdbserver/linux-i386-ipa.c
index 69f6749..7af7924 100644
--- a/gdb/gdbserver/linux-i386-ipa.c
+++ b/gdb/gdbserver/linux-i386-ipa.c
@@ -95,6 +95,21 @@ supply_fast_tracepoint_registers (struct regcache *regcache,
}
}
+ULONGEST __attribute__ ((visibility("default"), used))
+gdb_agent_get_raw_reg (unsigned char *raw_regs, int regnum)
+{
+ /* This should maybe be allowed to return an error code, or perhaps
+ better, have the emit_reg detect this, and emit a constant zero,
+ or something. */
+
+ if (regnum > i386_num_regs)
+ return 0;
+ else if (regnum >= I386_CS_REGNUM && regnum <= I386_GS_REGNUM)
+ return *(short *) (raw_regs + i386_ft_collect_regmap[regnum]);
+ else
+ return *(int *) (raw_regs + i386_ft_collect_regmap[regnum]);
+}
+
/* This is only needed because reg-i386-linux-lib.o references it. We
may use it proper at some point. */
const char *gdbserver_xmltarget;