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trace: [all] Add "guest_mem_before" event

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The event is described in "trace-events". Note that the "MO_AMASK" flag
is not traced, since it does not seem to affect the visible semantics of
instructions.

[s/inline inline/inline/ to fix clang build.
--Stefan]

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 146549350711.18437.726780393247474362.stgit@fimbulvetr.bsc.es
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Lluís Vilanova 2016-06-09 19:31:47 +02:00 • committed by Stefan Hajnoczi
parent 7c2550432a
commit dcdaadb6ea
6 changed files with 158 additions and 0 deletions
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10
tcg/tcg-op.c
View file

@ -28,6 +28,8 @@
#include "exec/exec-all.h"
#include "tcg.h"
#include "tcg-op.h"
#include "trace-tcg.h"
#include "trace/mem.h"
/* Reduce the number of ifdefs below. This assumes that all uses of
TCGV_HIGH and TCGV_LOW are properly protected by a conditional that
@ -1910,12 +1912,16 @@ static void gen_ldst_i64(TCGOpcode opc, TCGv_i64 val, TCGv addr,
void tcg_gen_qemu_ld_i32(TCGv_i32 val, TCGv addr, TCGArg idx, TCGMemOp memop)
{
memop = tcg_canonicalize_memop(memop, 0, 0);
trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,
addr, trace_mem_get_info(memop, 0));
gen_ldst_i32(INDEX_op_qemu_ld_i32, val, addr, memop, idx);
}
void tcg_gen_qemu_st_i32(TCGv_i32 val, TCGv addr, TCGArg idx, TCGMemOp memop)
{
memop = tcg_canonicalize_memop(memop, 0, 1);
trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,
addr, trace_mem_get_info(memop, 1));
gen_ldst_i32(INDEX_op_qemu_st_i32, val, addr, memop, idx);
}
@ -1932,6 +1938,8 @@ void tcg_gen_qemu_ld_i64(TCGv_i64 val, TCGv addr, TCGArg idx, TCGMemOp memop)
}
memop = tcg_canonicalize_memop(memop, 1, 0);
trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,
addr, trace_mem_get_info(memop, 0));
gen_ldst_i64(INDEX_op_qemu_ld_i64, val, addr, memop, idx);
}
@ -1943,5 +1951,7 @@ void tcg_gen_qemu_st_i64(TCGv_i64 val, TCGv addr, TCGArg idx, TCGMemOp memop)
}
memop = tcg_canonicalize_memop(memop, 1, 1);
trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,
addr, trace_mem_get_info(memop, 1));
gen_ldst_i64(INDEX_op_qemu_st_i64, val, addr, memop, idx);
}