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Add translator_use_goto_tb.

Browse source 
Cleanups in prep of breakpoint fixes.
 Misc fixes.
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Merge remote-tracking branch 'remotes/rth-gitlab/tags/pull-tcg-20210710' into staging

Add translator_use_goto_tb.
Cleanups in prep of breakpoint fixes.
Misc fixes.

# gpg: Signature made Sat 10 Jul 2021 16:29:14 BST
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth-gitlab/tags/pull-tcg-20210710: (41 commits)
  cpu: Add breakpoint tracepoints
  tcg: Remove TCG_TARGET_HAS_goto_ptr
  accel/tcg: Log tb->cflags with -d exec
  accel/tcg: Split out log_cpu_exec
  accel/tcg: Move tb_lookup to cpu-exec.c
  accel/tcg: Move helper_lookup_tb_ptr to cpu-exec.c
  target/i386: Use cpu_breakpoint_test in breakpoint_handler
  tcg: Fix prologue disassembly
  target/xtensa: Use translator_use_goto_tb
  target/tricore: Use tcg_gen_lookup_and_goto_ptr
  target/tricore: Use translator_use_goto_tb
  target/sparc: Use translator_use_goto_tb
  target/sh4: Use translator_use_goto_tb
  target/s390x: Remove use_exit_tb
  target/s390x: Use translator_use_goto_tb
  target/rx: Use translator_use_goto_tb
  target/riscv: Use translator_use_goto_tb
  target/ppc: Use translator_use_goto_tb
  target/openrisc: Use translator_use_goto_tb
  target/nios2: Use translator_use_goto_tb
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2021-07-12 11:02:38 +01:00
commit bd38ae26ce
46 changed files with 217 additions and 439 deletions
Download patch file Download diff file Expand all files Collapse all files

12
target/i386/tcg/sysemu/bpt_helper.c
View file

@ -210,7 +210,6 @@ void breakpoint_handler(CPUState *cs)
{
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
CPUBreakpoint *bp;
if (cs->watchpoint_hit) {
if (cs->watchpoint_hit->flags & BP_CPU) {
@ -222,14 +221,9 @@ void breakpoint_handler(CPUState *cs)
}
}
} else {
QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
if (bp->pc == env->eip) {
if (bp->flags & BP_CPU) {
check_hw_breakpoints(env, true);
raise_exception(env, EXCP01_DB);
}
break;
}
if (cpu_breakpoint_test(cs, env->eip, BP_CPU)) {
check_hw_breakpoints(env, true);
raise_exception(env, EXCP01_DB);
}
}
}

15
target/i386/tcg/translate.c
View file

@ -30,7 +30,6 @@
#include "exec/helper-gen.h"
#include "helper-tcg.h"
#include "trace-tcg.h"
#include "exec/log.h"
#define PREFIX_REPZ 0x01
@ -2315,21 +2314,11 @@ static inline int insn_const_size(MemOp ot)
}
}
static inline bool use_goto_tb(DisasContext *s, target_ulong pc)
{
#ifndef CONFIG_USER_ONLY
return (pc & TARGET_PAGE_MASK) == (s->base.tb->pc & TARGET_PAGE_MASK) ||
(pc & TARGET_PAGE_MASK) == (s->pc_start & TARGET_PAGE_MASK);
#else
return true;
#endif
}
static inline void gen_goto_tb(DisasContext *s, int tb_num, target_ulong eip)
static void gen_goto_tb(DisasContext *s, int tb_num, target_ulong eip)
{
target_ulong pc = s->cs_base + eip;
if (use_goto_tb(s, pc)) {
if (translator_use_goto_tb(&s->base, pc)) {
/* jump to same page: we can use a direct jump */
tcg_gen_goto_tb(tb_num);
gen_jmp_im(s, eip);