diff options
| author | Stacey Son <sson@FreeBSD.org> | 2024-07-08 00:41:27 +0530 |
|---|---|---|
| committer | Warner Losh <imp@bsdimp.com> | 2024-07-23 10:50:54 -0600 |
| commit | dadfc6d5df1006b52c1c0c8ae3af84ac3be36b31 (patch) | |
| tree | 0acaa50ad35e9911a2d6841389155967d8284984 /bsd-user | |
| parent | c88f44d85ab209576fc6704ff636e68e2bbc41dc (diff) | |
bsd-user:Add set_mcontext function for ARM AArch64
The function copies register values from the provided target_mcontext_t
structure to the CPUARMState registers.
Note:FP is unfinished upstream but will be a separate commit coming soon.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Ajeet Singh <itachis@FreeBSD.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240707191128.10509-8-itachis@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Diffstat (limited to 'bsd-user')
| -rw-r--r-- | bsd-user/aarch64/signal.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/bsd-user/aarch64/signal.c b/bsd-user/aarch64/signal.c index 43c886e603..13faac8ce6 100644 --- a/bsd-user/aarch64/signal.c +++ b/bsd-user/aarch64/signal.c @@ -95,3 +95,25 @@ abi_long setup_sigframe_arch(CPUARMState *env, abi_ulong frame_addr, return 0; } +/* + * Compare to set_mcontext() in arm64/arm64/machdep.c + * Assumes that the memory is locked if frame points to user memory. + */ +abi_long set_mcontext(CPUARMState *regs, target_mcontext_t *mcp, int srflag) +{ + int err = 0, i; + const uint64_t *gr = mcp->mc_gpregs.gp_x; + + for (i = 0; i < 30; i++) { + regs->xregs[i] = tswap64(gr[i]); + } + + regs->xregs[TARGET_REG_SP] = tswap64(mcp->mc_gpregs.gp_sp); + regs->xregs[TARGET_REG_LR] = tswap64(mcp->mc_gpregs.gp_lr); + regs->pc = mcp->mc_gpregs.gp_elr; + pstate_write(regs, mcp->mc_gpregs.gp_spsr); + + /* XXX FP? */ + + return err; +} |