diff options
| author | Peter Maydell <pmaydell@chiark.greenend.org.uk> | 2017-02-24 17:02:25 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-02-24 17:02:58 +0000 |
| commit | 3a649bfebac5550e9bab99986eac3962ede2da96 (patch) | |
| tree | 7055d08509cc43bf701f665f529601b95fcb3152 /risu_m68k.c | |
| parent | c7fe9c70b2f7dd3cb48857edd40f67a0ad162db5 (diff) | |
Abstract out getting and setting parameter register
The SETMEMBLOCK operation takes a parameter in a register,
and GETMEMBLOCK returns a result in a register. Abstract
these out into functions provided by the backend, so we
can use common code for send_register_info() and
recv_and_compare_register_info().
Signed-off-by: Peter Maydell <pmaydell@chiark.greenend.org.uk>
Diffstat (limited to 'risu_m68k.c')
| -rw-r--r-- | risu_m68k.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/risu_m68k.c b/risu_m68k.c index 15e30b1..feb3912 100644 --- a/risu_m68k.c +++ b/risu_m68k.c @@ -25,10 +25,15 @@ void advance_pc(void *vuc) uc->uc_mcontext.gregs[R_PC] += 4; } -void set_a0(void *vuc, uint32_t a0) +void set_ucontext_paramreg(void *vuc, uint64_t value) { ucontext_t *uc = vuc; - uc->uc_mcontext.gregs[R_A0] = a0; + uc->uc_mcontext.gregs[R_A0] = value; +} + +uint64_t get_reginfo_paramreg(struct reginfo *ri) +{ + return ri->gregs[R_A0]; } static int get_risuop(uint32_t insn) @@ -53,10 +58,11 @@ int send_register_info(int sock, void *uc) default: return send_data_pkt(sock, &ri, sizeof(ri)); case OP_SETMEMBLOCK: - memblock = (void*)ri.gregs[R_A0]; + memblock = (void *)(uintptr_t)get_reginfo_paramreg(&ri); break; case OP_GETMEMBLOCK: - set_a0(uc, ri.gregs[R_A0] + (uintptr_t)memblock); + set_ucontext_paramreg(uc, + get_reginfo_paramreg(&ri) + (uintptr_t)memblock); break; case OP_COMPAREMEM: return send_data_pkt(sock, memblock, MEMBLOCKLEN); @@ -93,10 +99,11 @@ int recv_and_compare_register_info(int sock, void *uc) send_response_byte(sock, resp); break; case OP_SETMEMBLOCK: - memblock = (void*)master_ri.gregs[R_A0]; + memblock = (void *)(uintptr_t)get_reginfo_paramreg(&master_ri); break; case OP_GETMEMBLOCK: - set_a0(uc, master_ri.gregs[R_A0] + (uintptr_t)memblock); + set_ucontext_paramreg(uc, get_reginfo_paramreg(&master_ri) + + (uintptr_t)memblock); break; case OP_COMPAREMEM: mem_used = 1; |