bsd-user/arm/signal.c

2  *  arm signal functions
24  * Compare to arm/arm/machdep.c sendsig()
40      *  lr = sigtramp at base of user stack  in set_sigtramp_args()
43     env->regs[0] = sig;  in set_sigtramp_args()
44     env->regs[1] = frame_addr +  in set_sigtramp_args()
46     env->regs[2] = frame_addr +  in set_sigtramp_args()
50     env->regs[5] = frame_addr +  in set_sigtramp_args()
52     env->regs[TARGET_REG_PC] = ka->_sa_handler & ~1;  in set_sigtramp_args()
53     env->regs[TARGET_REG_SP] = frame_addr;  in set_sigtramp_args()
54     env->regs[TARGET_REG_LR] = TARGET_PS_STRINGS - TARGET_SZSIGCODE;  in set_sigtramp_args()
58     cpsr_write(env, (ka->_sa_handler & 1) * CPSR_T, CPSR_T, CPSRWriteByInstr);  in set_sigtramp_args()
66     /* see sendsig and get_vfpcontext in sys/arm/arm/exec_machdep.c */  in get_vfpcontext()
67     target_mcontext_vfp_t *vfp = &frame->sf_vfp;  in get_vfpcontext()
68     target_mcontext_t *mcp = &frame->sf_uc.uc_mcontext;  in get_vfpcontext()
72         vfp->mcv_reg[i] = tswap64(*aa32_vfp_dreg(env, i));  in get_vfpcontext()
74     vfp->mcv_fpscr = tswap32(vfp_get_fpscr(env));  in get_vfpcontext()
75     mcp->mc_vfp_size = tswap32(sizeof(*vfp));  in get_vfpcontext()
76     mcp->mc_vfp_ptr = tswap32(frame_addr + ((uintptr_t)vfp - (uintptr_t)frame));  in get_vfpcontext()
81  * Compare to arm/arm/exec_machdep.c get_mcontext()
82  * Assumes that the memory is locked if mcp points to user memory.
86     uint32_t *gr = mcp->__gregs;  in get_mcontext()
93         gr[TARGET_REG_R0] = tswap32(env->regs[0]);  in get_mcontext()
96     gr[TARGET_REG_R1] = tswap32(env->regs[1]);  in get_mcontext()
97     gr[TARGET_REG_R2] = tswap32(env->regs[2]);  in get_mcontext()
98     gr[TARGET_REG_R3] = tswap32(env->regs[3]);  in get_mcontext()
99     gr[TARGET_REG_R4] = tswap32(env->regs[4]);  in get_mcontext()
100     gr[TARGET_REG_R5] = tswap32(env->regs[5]);  in get_mcontext()
101     gr[TARGET_REG_R6] = tswap32(env->regs[6]);  in get_mcontext()
102     gr[TARGET_REG_R7] = tswap32(env->regs[7]);  in get_mcontext()
103     gr[TARGET_REG_R8] = tswap32(env->regs[8]);  in get_mcontext()
104     gr[TARGET_REG_R9] = tswap32(env->regs[9]);  in get_mcontext()
105     gr[TARGET_REG_R10] = tswap32(env->regs[10]);  in get_mcontext()
106     gr[TARGET_REG_R11] = tswap32(env->regs[11]);  in get_mcontext()
107     gr[TARGET_REG_R12] = tswap32(env->regs[12]);  in get_mcontext()
109     gr[TARGET_REG_SP] = tswap32(env->regs[13]);  in get_mcontext()
110     gr[TARGET_REG_LR] = tswap32(env->regs[14]);  in get_mcontext()
111     gr[TARGET_REG_PC] = tswap32(env->regs[15]);  in get_mcontext()
118     mcp->mc_vfp_size = 0;  in get_mcontext()
119     mcp->mc_vfp_ptr = 0;  in get_mcontext()
120     memset(&mcp->mc_spare, 0, sizeof(mcp->mc_spare));  in get_mcontext()
126  * Compare to arm/arm/exec_machdep.c sendsig()
127  * Assumes that the memory is locked if frame points to user memory.
132     target_mcontext_t *mcp = &frame->sf_uc.uc_mcontext;  in setup_sigframe_arch()
139 /* Compare to arm/arm/exec_machdep.c set_mcontext() */
143     const uint32_t *gr = mcp->__gregs;  in set_mcontext()
149      * Only allow certain bits to change, reject attempted changes to non-user  in set_mcontext()
150      * bits. In addition, make sure we're headed for user mode and none of the  in set_mcontext()
154         return -TARGET_EINVAL;  in set_mcontext()
158         return -TARGET_EINVAL;  in set_mcontext()
172     if (mcp->mc_vfp_size != 0 && mcp->mc_vfp_size != sizeof(target_mcontext_vfp_t)) {  in set_mcontext()
173         return -TARGET_EINVAL;  in set_mcontext()
176     env->regs[0] = tswap32(gr[TARGET_REG_R0]);  in set_mcontext()
177     env->regs[1] = tswap32(gr[TARGET_REG_R1]);  in set_mcontext()
178     env->regs[2] = tswap32(gr[TARGET_REG_R2]);  in set_mcontext()
179     env->regs[3] = tswap32(gr[TARGET_REG_R3]);  in set_mcontext()
180     env->regs[4] = tswap32(gr[TARGET_REG_R4]);  in set_mcontext()
181     env->regs[5] = tswap32(gr[TARGET_REG_R5]);  in set_mcontext()
182     env->regs[6] = tswap32(gr[TARGET_REG_R6]);  in set_mcontext()
183     env->regs[7] = tswap32(gr[TARGET_REG_R7]);  in set_mcontext()
184     env->regs[8] = tswap32(gr[TARGET_REG_R8]);  in set_mcontext()
185     env->regs[9] = tswap32(gr[TARGET_REG_R9]);  in set_mcontext()
186     env->regs[10] = tswap32(gr[TARGET_REG_R10]);  in set_mcontext()
187     env->regs[11] = tswap32(gr[TARGET_REG_R11]);  in set_mcontext()
188     env->regs[12] = tswap32(gr[TARGET_REG_R12]);  in set_mcontext()
190     env->regs[13] = tswap32(gr[TARGET_REG_SP]);  in set_mcontext()
191     env->regs[14] = tswap32(gr[TARGET_REG_LR]);  in set_mcontext()
192     env->regs[15] = tswap32(gr[TARGET_REG_PC] & ~mask);  in set_mcontext()
193     if (mcp->mc_vfp_size != 0 && mcp->mc_vfp_ptr != 0) {  in set_mcontext()
194         /* see set_vfpcontext in sys/arm/arm/exec_machdep.c */  in set_mcontext()
197         vfp = lock_user(VERIFY_READ, mcp->mc_vfp_ptr, sizeof(*vfp), 1);  in set_mcontext()
199             __get_user(*aa32_vfp_dreg(env, i), &vfp->mcv_reg[i]);  in set_mcontext()
201         __get_user(fpscr, &vfp->mcv_fpscr);  in set_mcontext()
203         unlock_user(vfp, mcp->mc_vfp_ptr, sizeof(target_ucontext_t));  in set_mcontext()
206          * linux-user sets fpexc, fpinst and fpinst2, but these aren't in  in set_mcontext()
215 /* Compare to arm/arm/machdep.c sys_sigreturn() */