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| author | Warner Losh <imp@bsdimp.com> | 2021-09-23 15:22:12 -0600 |
|---|---|---|
| committer | Warner Losh <imp@bsdimp.com> | 2022-01-07 22:58:51 -0700 |
| commit | 38ce1471c97af97ff2bb569c659951a962c2b703 (patch) | |
| tree | cd3610716e97c5ebcaa9d500db2e939ddd59747c /bsd-user/arm | |
| parent | 781be8666c7cc05a9cce6011c9d9c1ba4e15770d (diff) | |
| download | qemu-38ce1471c97af97ff2bb569c659951a962c2b703.zip qemu-38ce1471c97af97ff2bb569c659951a962c2b703.tar.gz qemu-38ce1471c97af97ff2bb569c659951a962c2b703.tar.bz2 | |
bsd-user/arm/signal.c: arm get_mcontext
Get the machine context from the CPU state.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'bsd-user/arm')
| -rw-r--r-- | bsd-user/arm/signal.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/bsd-user/arm/signal.c b/bsd-user/arm/signal.c index 3c0db30..93c9bfc 100644 --- a/bsd-user/arm/signal.c +++ b/bsd-user/arm/signal.c @@ -58,3 +58,54 @@ abi_long set_sigtramp_args(CPUARMState *env, int sig, return 0; } + +/* + * Compare to arm/arm/machdep.c get_mcontext() + * Assumes that the memory is locked if mcp points to user memory. + */ +abi_long get_mcontext(CPUARMState *env, target_mcontext_t *mcp, int flags) +{ + int err = 0; + uint32_t *gr = mcp->__gregs; + + if (mcp->mc_vfp_size != 0 && mcp->mc_vfp_size != sizeof(target_mcontext_vfp_t)) { + return -TARGET_EINVAL; + } + + gr[TARGET_REG_CPSR] = tswap32(cpsr_read(env)); + if (flags & TARGET_MC_GET_CLEAR_RET) { + gr[TARGET_REG_R0] = 0; + gr[TARGET_REG_CPSR] &= ~CPSR_C; + } else { + gr[TARGET_REG_R0] = tswap32(env->regs[0]); + } + + gr[TARGET_REG_R1] = tswap32(env->regs[1]); + gr[TARGET_REG_R2] = tswap32(env->regs[2]); + gr[TARGET_REG_R3] = tswap32(env->regs[3]); + gr[TARGET_REG_R4] = tswap32(env->regs[4]); + gr[TARGET_REG_R5] = tswap32(env->regs[5]); + gr[TARGET_REG_R6] = tswap32(env->regs[6]); + gr[TARGET_REG_R7] = tswap32(env->regs[7]); + gr[TARGET_REG_R8] = tswap32(env->regs[8]); + gr[TARGET_REG_R9] = tswap32(env->regs[9]); + gr[TARGET_REG_R10] = tswap32(env->regs[10]); + gr[TARGET_REG_R11] = tswap32(env->regs[11]); + gr[TARGET_REG_R12] = tswap32(env->regs[12]); + + gr[TARGET_REG_SP] = tswap32(env->regs[13]); + gr[TARGET_REG_LR] = tswap32(env->regs[14]); + gr[TARGET_REG_PC] = tswap32(env->regs[15]); + + if (mcp->mc_vfp_size != 0 && mcp->mc_vfp_ptr != 0) { + /* see get_vfpcontext in sys/arm/arm/exec_machdep.c */ + target_mcontext_vfp_t *vfp; + vfp = lock_user(VERIFY_WRITE, mcp->mc_vfp_ptr, sizeof(*vfp), 0); + for (int i = 0; i < 32; i++) { + vfp->mcv_reg[i] = tswap64(*aa32_vfp_dreg(env, i)); + } + vfp->mcv_fpscr = tswap32(vfp_get_fpscr(env)); + unlock_user(vfp, mcp->mc_vfp_ptr, sizeof(*vfp)); + } + return err; +} |