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Merge remote-tracking branch 'remotes/vivier/tags/m68k-for-2.10-pull-request' into staging

# gpg: Signature made Wed 07 Jun 2017 10:29:50 BST
# gpg:                using RSA key 0xF30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>"
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier/tags/m68k-for-2.10-pull-request:
  target/m68k: implement rtd

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-06-07 11:56:00 +01:00
parent b187e2b530 18059c9e16
commit 0db1851bec
3 changed files with 14 additions and 0 deletions
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2
target/m68k/cpu.c
View File

@ -130,6 +130,7 @@ static void m68020_cpu_initfn(Object *obj)
m68k_set_feature(env, M68K_FEATURE_FPU);
m68k_set_feature(env, M68K_FEATURE_CAS);
m68k_set_feature(env, M68K_FEATURE_BKPT);
m68k_set_feature(env, M68K_FEATURE_RTD);
}
#define m68030_cpu_initfn m68020_cpu_initfn
#define m68040_cpu_initfn m68020_cpu_initfn
@ -151,6 +152,7 @@ static void m68060_cpu_initfn(Object *obj)
m68k_set_feature(env, M68K_FEATURE_FPU);
m68k_set_feature(env, M68K_FEATURE_CAS);
m68k_set_feature(env, M68K_FEATURE_BKPT);
m68k_set_feature(env, M68K_FEATURE_RTD);
}
static void m5208_cpu_initfn(Object *obj)

1
target/m68k/cpu.h
View File

@ -251,6 +251,7 @@ enum m68k_features {
M68K_FEATURE_FPU,
M68K_FEATURE_CAS,
M68K_FEATURE_BKPT,
M68K_FEATURE_RTD,
};
static inline int m68k_feature(CPUM68KState *env, int feature)

11
target/m68k/translate.c
View File

@ -2483,6 +2483,16 @@ DISAS_INSN(nop)
{
}
DISAS_INSN(rtd)
{
TCGv tmp;
int16_t offset = read_im16(env, s);
tmp = gen_load(s, OS_LONG, QREG_SP, 0);
tcg_gen_addi_i32(QREG_SP, QREG_SP, offset + 4);
gen_jmp(s, tmp);
}
DISAS_INSN(rts)
{
TCGv tmp;
@ -4904,6 +4914,7 @@ void register_m68k_insns (CPUM68KState *env)
BASE(nop, 4e71, ffff);
BASE(stop, 4e72, ffff);
BASE(rte, 4e73, ffff);
INSN(rtd, 4e74, ffff, RTD);
BASE(rts, 4e75, ffff);
INSN(movec, 4e7b, ffff, CF_ISA_A);
BASE(jump, 4e80, ffc0);