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UserspaceEmulator: Emulate the sys$get_stack_bounds() syscall

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This commit is contained in:
Andreas Kling 2020-11-13 10:37:26 +01:00
parent 04d9af79ac
commit ae81ced21c
2 changed files with 13 additions and 0 deletions
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12
DevTools/UserspaceEmulator/Emulator.cpp
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@ -252,6 +252,8 @@ u32 Emulator::virt_syscall(u32 function, u32 arg1, u32 arg2, u32 arg3)
return virt$chdir(arg1, arg2); return virt$chdir(arg1, arg2);
case SC_dup2: case SC_dup2:
return virt$dup2(arg1, arg2); return virt$dup2(arg1, arg2);
case SC_get_stack_bounds:
return virt$get_stack_bounds(arg1, arg2);
case SC_access: case SC_access:
return virt$access(arg1, arg2, arg3); return virt$access(arg1, arg2, arg3);
case SC_waitid: case SC_waitid:
@ -549,6 +551,16 @@ int Emulator::virt$setsockopt(FlatPtr params_addr)
TODO(); TODO();
} }
int Emulator::virt$get_stack_bounds(FlatPtr base, FlatPtr size)
{
auto* region = mmu().find_region({ m_cpu.ss(), m_cpu.esp().value() });
FlatPtr b = region->base();
size_t s = region->size();
mmu().copy_to_vm(base, &b, sizeof(b));
mmu().copy_to_vm(size, &s, sizeof(s));
return 0;
}
int Emulator::virt$accept(int sockfd, FlatPtr address, FlatPtr address_length) int Emulator::virt$accept(int sockfd, FlatPtr address, FlatPtr address_length)
{ {
socklen_t host_address_length = 0; socklen_t host_address_length = 0;

1
DevTools/UserspaceEmulator/Emulator.h
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@ -134,6 +134,7 @@ private:
int virt$getsockopt(FlatPtr); int virt$getsockopt(FlatPtr);
int virt$setsockopt(FlatPtr); int virt$setsockopt(FlatPtr);
int virt$select(FlatPtr); int virt$select(FlatPtr);
int virt$get_stack_bounds(FlatPtr, FlatPtr);
int virt$accept(int sockfd, FlatPtr address, FlatPtr address_length); int virt$accept(int sockfd, FlatPtr address, FlatPtr address_length);
int virt$bind(int sockfd, FlatPtr address, socklen_t address_length); int virt$bind(int sockfd, FlatPtr address, socklen_t address_length);
int virt$recvmsg(int sockfd, FlatPtr msg_addr, int flags); int virt$recvmsg(int sockfd, FlatPtr msg_addr, int flags);