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Forward return value of syscall.

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Danila Fedorin 2019-04-23 17:10:35 -07:00
parent 9231075799
commit 94b52c5730
1 changed files with 2 additions and 1 deletions
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3
kern/trap.c
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@ -203,12 +203,13 @@ trap_dispatch(struct Trapframe *tf)
monitor(tf); monitor(tf);
return; return;
} else if (tf->tf_trapno == T_SYSCALL) { } else if (tf->tf_trapno == T_SYSCALL) {
syscall(tf->tf_regs.reg_eax, int32_t returned = syscall(tf->tf_regs.reg_eax,
tf->tf_regs.reg_edx, tf->tf_regs.reg_edx,
tf->tf_regs.reg_ecx, tf->tf_regs.reg_ecx,
tf->tf_regs.reg_ebx, tf->tf_regs.reg_ebx,
tf->tf_regs.reg_edi, tf->tf_regs.reg_edi,
tf->tf_regs.reg_esi); tf->tf_regs.reg_esi);
tf->tf_regs.reg_eax = returned;
return; return;
} }