diff options
author | Laurent Vivier <laurent@vivier.eu> | 2018-04-11 20:56:51 +0200 |
---|---|---|
committer | Laurent Vivier <laurent@vivier.eu> | 2018-04-30 09:48:32 +0200 |
commit | de6e89b81fb41870d977656c2a23226c06b68655 (patch) | |
tree | c74a3fb91d95252b26e7165109f4c84d3a0d1795 /linux-user | |
parent | 1d8d0b4ec7b39735e4c3e078c7772f0cd240a0f8 (diff) |
linux-user: move xtensa cpu loop to xtensa directory
No code change, only move code from main.c to
xtensa/cpu_loop.c.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180411185651.21351-20-laurent@vivier.eu>
Diffstat (limited to 'linux-user')
-rw-r--r-- | linux-user/main.c | 250 | ||||
-rw-r--r-- | linux-user/xtensa/cpu_loop.c | 241 |
2 files changed, 241 insertions, 250 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index aa48b048a7..32347545c9 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -149,245 +149,6 @@ void fork_end(int child) } } -#ifdef TARGET_XTENSA - -static void xtensa_rfw(CPUXtensaState *env) -{ - xtensa_restore_owb(env); - env->pc = env->sregs[EPC1]; -} - -static void xtensa_rfwu(CPUXtensaState *env) -{ - env->sregs[WINDOW_START] |= (1 << env->sregs[WINDOW_BASE]); - xtensa_rfw(env); -} - -static void xtensa_rfwo(CPUXtensaState *env) -{ - env->sregs[WINDOW_START] &= ~(1 << env->sregs[WINDOW_BASE]); - xtensa_rfw(env); -} - -static void xtensa_overflow4(CPUXtensaState *env) -{ - put_user_ual(env->regs[0], env->regs[5] - 16); - put_user_ual(env->regs[1], env->regs[5] - 12); - put_user_ual(env->regs[2], env->regs[5] - 8); - put_user_ual(env->regs[3], env->regs[5] - 4); - xtensa_rfwo(env); -} - -static void xtensa_underflow4(CPUXtensaState *env) -{ - get_user_ual(env->regs[0], env->regs[5] - 16); - get_user_ual(env->regs[1], env->regs[5] - 12); - get_user_ual(env->regs[2], env->regs[5] - 8); - get_user_ual(env->regs[3], env->regs[5] - 4); - xtensa_rfwu(env); -} - -static void xtensa_overflow8(CPUXtensaState *env) -{ - put_user_ual(env->regs[0], env->regs[9] - 16); - get_user_ual(env->regs[0], env->regs[1] - 12); - put_user_ual(env->regs[1], env->regs[9] - 12); - put_user_ual(env->regs[2], env->regs[9] - 8); - put_user_ual(env->regs[3], env->regs[9] - 4); - put_user_ual(env->regs[4], env->regs[0] - 32); - put_user_ual(env->regs[5], env->regs[0] - 28); - put_user_ual(env->regs[6], env->regs[0] - 24); - put_user_ual(env->regs[7], env->regs[0] - 20); - xtensa_rfwo(env); -} - -static void xtensa_underflow8(CPUXtensaState *env) -{ - get_user_ual(env->regs[0], env->regs[9] - 16); - get_user_ual(env->regs[1], env->regs[9] - 12); - get_user_ual(env->regs[2], env->regs[9] - 8); - get_user_ual(env->regs[7], env->regs[1] - 12); - get_user_ual(env->regs[3], env->regs[9] - 4); - get_user_ual(env->regs[4], env->regs[7] - 32); - get_user_ual(env->regs[5], env->regs[7] - 28); - get_user_ual(env->regs[6], env->regs[7] - 24); - get_user_ual(env->regs[7], env->regs[7] - 20); - xtensa_rfwu(env); -} - -static void xtensa_overflow12(CPUXtensaState *env) -{ - put_user_ual(env->regs[0], env->regs[13] - 16); - get_user_ual(env->regs[0], env->regs[1] - 12); - put_user_ual(env->regs[1], env->regs[13] - 12); - put_user_ual(env->regs[2], env->regs[13] - 8); - put_user_ual(env->regs[3], env->regs[13] - 4); - put_user_ual(env->regs[4], env->regs[0] - 48); - put_user_ual(env->regs[5], env->regs[0] - 44); - put_user_ual(env->regs[6], env->regs[0] - 40); - put_user_ual(env->regs[7], env->regs[0] - 36); - put_user_ual(env->regs[8], env->regs[0] - 32); - put_user_ual(env->regs[9], env->regs[0] - 28); - put_user_ual(env->regs[10], env->regs[0] - 24); - put_user_ual(env->regs[11], env->regs[0] - 20); - xtensa_rfwo(env); -} - -static void xtensa_underflow12(CPUXtensaState *env) -{ - get_user_ual(env->regs[0], env->regs[13] - 16); - get_user_ual(env->regs[1], env->regs[13] - 12); - get_user_ual(env->regs[2], env->regs[13] - 8); - get_user_ual(env->regs[11], env->regs[1] - 12); - get_user_ual(env->regs[3], env->regs[13] - 4); - get_user_ual(env->regs[4], env->regs[11] - 48); - get_user_ual(env->regs[5], env->regs[11] - 44); - get_user_ual(env->regs[6], env->regs[11] - 40); - get_user_ual(env->regs[7], env->regs[11] - 36); - get_user_ual(env->regs[8], env->regs[11] - 32); - get_user_ual(env->regs[9], env->regs[11] - 28); - get_user_ual(env->regs[10], env->regs[11] - 24); - get_user_ual(env->regs[11], env->regs[11] - 20); - xtensa_rfwu(env); -} - -void cpu_loop(CPUXtensaState *env) -{ - CPUState *cs = CPU(xtensa_env_get_cpu(env)); - target_siginfo_t info; - abi_ulong ret; - int trapnr; - - while (1) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - env->sregs[PS] &= ~PS_EXCM; - switch (trapnr) { - case EXCP_INTERRUPT: - break; - - case EXC_WINDOW_OVERFLOW4: - xtensa_overflow4(env); - break; - case EXC_WINDOW_UNDERFLOW4: - xtensa_underflow4(env); - break; - case EXC_WINDOW_OVERFLOW8: - xtensa_overflow8(env); - break; - case EXC_WINDOW_UNDERFLOW8: - xtensa_underflow8(env); - break; - case EXC_WINDOW_OVERFLOW12: - xtensa_overflow12(env); - break; - case EXC_WINDOW_UNDERFLOW12: - xtensa_underflow12(env); - break; - - case EXC_USER: - switch (env->sregs[EXCCAUSE]) { - case ILLEGAL_INSTRUCTION_CAUSE: - case PRIVILEGED_CAUSE: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = - env->sregs[EXCCAUSE] == ILLEGAL_INSTRUCTION_CAUSE ? - TARGET_ILL_ILLOPC : TARGET_ILL_PRVOPC; - info._sifields._sigfault._addr = env->sregs[EPC1]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - - case SYSCALL_CAUSE: - env->pc += 3; - ret = do_syscall(env, env->regs[2], - env->regs[6], env->regs[3], - env->regs[4], env->regs[5], - env->regs[8], env->regs[9], 0, 0); - switch (ret) { - default: - env->regs[2] = ret; - break; - - case -TARGET_ERESTARTSYS: - env->pc -= 3; - break; - - case -TARGET_QEMU_ESIGRETURN: - break; - } - break; - - case ALLOCA_CAUSE: - env->sregs[PS] = deposit32(env->sregs[PS], - PS_OWB_SHIFT, - PS_OWB_LEN, - env->sregs[WINDOW_BASE]); - - switch (env->regs[0] & 0xc0000000) { - case 0x00000000: - case 0x40000000: - xtensa_rotate_window(env, -1); - xtensa_underflow4(env); - break; - - case 0x80000000: - xtensa_rotate_window(env, -2); - xtensa_underflow8(env); - break; - - case 0xc0000000: - xtensa_rotate_window(env, -3); - xtensa_underflow12(env); - break; - } - break; - - case INTEGER_DIVIDE_BY_ZERO_CAUSE: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = TARGET_FPE_INTDIV; - info._sifields._sigfault._addr = env->sregs[EPC1]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - - case LOAD_PROHIBITED_CAUSE: - case STORE_PROHIBITED_CAUSE: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_ACCERR; - info._sifields._sigfault._addr = env->sregs[EXCVADDR]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - - default: - fprintf(stderr, "exccause = %d\n", env->sregs[EXCCAUSE]); - g_assert_not_reached(); - } - break; - case EXCP_DEBUG: - trapnr = gdb_handlesig(cs, TARGET_SIGTRAP); - if (trapnr) { - info.si_signo = trapnr; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, trapnr, QEMU_SI_FAULT, &info); - } - break; - case EXC_DEBUG: - default: - fprintf(stderr, "trapnr = %d\n", trapnr); - g_assert_not_reached(); - } - process_pending_signals(env); - } -} - -#endif /* TARGET_XTENSA */ - __thread CPUState *thread_cpu; bool qemu_cpu_is_self(CPUState *cpu) @@ -1045,17 +806,6 @@ int main(int argc, char **argv, char **envp) target_cpu_copy_regs(env, regs); -#if defined(TARGET_XTENSA) - { - int i; - for (i = 0; i < 16; ++i) { - env->regs[i] = regs->areg[i]; - } - env->sregs[WINDOW_START] = regs->windowstart; - env->pc = regs->pc; - } -#endif - if (gdbstub_port) { if (gdbserver_start(gdbstub_port) < 0) { fprintf(stderr, "qemu: could not open gdbserver on port %d\n", diff --git a/linux-user/xtensa/cpu_loop.c b/linux-user/xtensa/cpu_loop.c index b7700a5561..d142988ebe 100644 --- a/linux-user/xtensa/cpu_loop.c +++ b/linux-user/xtensa/cpu_loop.c @@ -21,6 +21,247 @@ #include "qemu.h" #include "cpu_loop-common.h" +static void xtensa_rfw(CPUXtensaState *env) +{ + xtensa_restore_owb(env); + env->pc = env->sregs[EPC1]; +} + +static void xtensa_rfwu(CPUXtensaState *env) +{ + env->sregs[WINDOW_START] |= (1 << env->sregs[WINDOW_BASE]); + xtensa_rfw(env); +} + +static void xtensa_rfwo(CPUXtensaState *env) +{ + env->sregs[WINDOW_START] &= ~(1 << env->sregs[WINDOW_BASE]); + xtensa_rfw(env); +} + +static void xtensa_overflow4(CPUXtensaState *env) +{ + put_user_ual(env->regs[0], env->regs[5] - 16); + put_user_ual(env->regs[1], env->regs[5] - 12); + put_user_ual(env->regs[2], env->regs[5] - 8); + put_user_ual(env->regs[3], env->regs[5] - 4); + xtensa_rfwo(env); +} + +static void xtensa_underflow4(CPUXtensaState *env) +{ + get_user_ual(env->regs[0], env->regs[5] - 16); + get_user_ual(env->regs[1], env->regs[5] - 12); + get_user_ual(env->regs[2], env->regs[5] - 8); + get_user_ual(env->regs[3], env->regs[5] - 4); + xtensa_rfwu(env); +} + +static void xtensa_overflow8(CPUXtensaState *env) +{ + put_user_ual(env->regs[0], env->regs[9] - 16); + get_user_ual(env->regs[0], env->regs[1] - 12); + put_user_ual(env->regs[1], env->regs[9] - 12); + put_user_ual(env->regs[2], env->regs[9] - 8); + put_user_ual(env->regs[3], env->regs[9] - 4); + put_user_ual(env->regs[4], env->regs[0] - 32); + put_user_ual(env->regs[5], env->regs[0] - 28); + put_user_ual(env->regs[6], env->regs[0] - 24); + put_user_ual(env->regs[7], env->regs[0] - 20); + xtensa_rfwo(env); +} + +static void xtensa_underflow8(CPUXtensaState *env) +{ + get_user_ual(env->regs[0], env->regs[9] - 16); + get_user_ual(env->regs[1], env->regs[9] - 12); + get_user_ual(env->regs[2], env->regs[9] - 8); + get_user_ual(env->regs[7], env->regs[1] - 12); + get_user_ual(env->regs[3], env->regs[9] - 4); + get_user_ual(env->regs[4], env->regs[7] - 32); + get_user_ual(env->regs[5], env->regs[7] - 28); + get_user_ual(env->regs[6], env->regs[7] - 24); + get_user_ual(env->regs[7], env->regs[7] - 20); + xtensa_rfwu(env); +} + +static void xtensa_overflow12(CPUXtensaState *env) +{ + put_user_ual(env->regs[0], env->regs[13] - 16); + get_user_ual(env->regs[0], env->regs[1] - 12); + put_user_ual(env->regs[1], env->regs[13] - 12); + put_user_ual(env->regs[2], env->regs[13] - 8); + put_user_ual(env->regs[3], env->regs[13] - 4); + put_user_ual(env->regs[4], env->regs[0] - 48); + put_user_ual(env->regs[5], env->regs[0] - 44); + put_user_ual(env->regs[6], env->regs[0] - 40); + put_user_ual(env->regs[7], env->regs[0] - 36); + put_user_ual(env->regs[8], env->regs[0] - 32); + put_user_ual(env->regs[9], env->regs[0] - 28); + put_user_ual(env->regs[10], env->regs[0] - 24); + put_user_ual(env->regs[11], env->regs[0] - 20); + xtensa_rfwo(env); +} + +static void xtensa_underflow12(CPUXtensaState *env) +{ + get_user_ual(env->regs[0], env->regs[13] - 16); + get_user_ual(env->regs[1], env->regs[13] - 12); + get_user_ual(env->regs[2], env->regs[13] - 8); + get_user_ual(env->regs[11], env->regs[1] - 12); + get_user_ual(env->regs[3], env->regs[13] - 4); + get_user_ual(env->regs[4], env->regs[11] - 48); + get_user_ual(env->regs[5], env->regs[11] - 44); + get_user_ual(env->regs[6], env->regs[11] - 40); + get_user_ual(env->regs[7], env->regs[11] - 36); + get_user_ual(env->regs[8], env->regs[11] - 32); + get_user_ual(env->regs[9], env->regs[11] - 28); + get_user_ual(env->regs[10], env->regs[11] - 24); + get_user_ual(env->regs[11], env->regs[11] - 20); + xtensa_rfwu(env); +} + +void cpu_loop(CPUXtensaState *env) +{ + CPUState *cs = CPU(xtensa_env_get_cpu(env)); + target_siginfo_t info; + abi_ulong ret; + int trapnr; + + while (1) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + env->sregs[PS] &= ~PS_EXCM; + switch (trapnr) { + case EXCP_INTERRUPT: + break; + + case EXC_WINDOW_OVERFLOW4: + xtensa_overflow4(env); + break; + case EXC_WINDOW_UNDERFLOW4: + xtensa_underflow4(env); + break; + case EXC_WINDOW_OVERFLOW8: + xtensa_overflow8(env); + break; + case EXC_WINDOW_UNDERFLOW8: + xtensa_underflow8(env); + break; + case EXC_WINDOW_OVERFLOW12: + xtensa_overflow12(env); + break; + case EXC_WINDOW_UNDERFLOW12: + xtensa_underflow12(env); + break; + + case EXC_USER: + switch (env->sregs[EXCCAUSE]) { + case ILLEGAL_INSTRUCTION_CAUSE: + case PRIVILEGED_CAUSE: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = + env->sregs[EXCCAUSE] == ILLEGAL_INSTRUCTION_CAUSE ? + TARGET_ILL_ILLOPC : TARGET_ILL_PRVOPC; + info._sifields._sigfault._addr = env->sregs[EPC1]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + + case SYSCALL_CAUSE: + env->pc += 3; + ret = do_syscall(env, env->regs[2], + env->regs[6], env->regs[3], + env->regs[4], env->regs[5], + env->regs[8], env->regs[9], 0, 0); + switch (ret) { + default: + env->regs[2] = ret; + break; + + case -TARGET_ERESTARTSYS: + env->pc -= 3; + break; + + case -TARGET_QEMU_ESIGRETURN: + break; + } + break; + + case ALLOCA_CAUSE: + env->sregs[PS] = deposit32(env->sregs[PS], + PS_OWB_SHIFT, + PS_OWB_LEN, + env->sregs[WINDOW_BASE]); + + switch (env->regs[0] & 0xc0000000) { + case 0x00000000: + case 0x40000000: + xtensa_rotate_window(env, -1); + xtensa_underflow4(env); + break; + + case 0x80000000: + xtensa_rotate_window(env, -2); + xtensa_underflow8(env); + break; + + case 0xc0000000: + xtensa_rotate_window(env, -3); + xtensa_underflow12(env); + break; + } + break; + + case INTEGER_DIVIDE_BY_ZERO_CAUSE: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = TARGET_FPE_INTDIV; + info._sifields._sigfault._addr = env->sregs[EPC1]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + + case LOAD_PROHIBITED_CAUSE: + case STORE_PROHIBITED_CAUSE: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_ACCERR; + info._sifields._sigfault._addr = env->sregs[EXCVADDR]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + + default: + fprintf(stderr, "exccause = %d\n", env->sregs[EXCCAUSE]); + g_assert_not_reached(); + } + break; + case EXCP_DEBUG: + trapnr = gdb_handlesig(cs, TARGET_SIGTRAP); + if (trapnr) { + info.si_signo = trapnr; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, trapnr, QEMU_SI_FAULT, &info); + } + break; + case EXC_DEBUG: + default: + fprintf(stderr, "trapnr = %d\n", trapnr); + g_assert_not_reached(); + } + process_pending_signals(env); + } +} + void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) { + int i; + for (i = 0; i < 16; ++i) { + env->regs[i] = regs->areg[i]; + } + env->sregs[WINDOW_START] = regs->windowstart; + env->pc = regs->pc; } |