Module: wine Branch: master Commit: 28e443d9e2a3bfea936b4f6f97bf78f6ccf6a91a URL: https://source.winehq.org/git/wine.git/?a=commit;h=28e443d9e2a3bfea936b4f6f9...
Author: Alexandre Julliard julliard@winehq.org Date: Tue Jul 28 13:01:46 2020 +0200
winebuild: Store the syscall frame in the thread data on ARM.
Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/ntdll/unix/signal_arm.c | 31 +++++++++++++++++++++ tools/winebuild/import.c | 66 ++++++++++++++++++++++++++++++-------------- 2 files changed, 77 insertions(+), 20 deletions(-)
diff --git a/dlls/ntdll/unix/signal_arm.c b/dlls/ntdll/unix/signal_arm.c index 30f2302045..19a952b03f 100644 --- a/dlls/ntdll/unix/signal_arm.c +++ b/dlls/ntdll/unix/signal_arm.c @@ -172,6 +172,37 @@ enum arm_trap_code TRAP_ARM_ALIGNFLT = 17, /* Alignment check exception */ };
+struct syscall_frame +{ + struct syscall_frame *prev_frame; + DWORD cpsr; + DWORD r5; + DWORD r6; + DWORD r7; + DWORD r8; + DWORD r9; + DWORD r10; + DWORD r11; + DWORD thunk_addr; + DWORD r4; + DWORD ret_addr; +}; + +struct arm_thread_data +{ + void *exit_frame; /* 1d4 exit frame pointer */ + struct syscall_frame *syscall_frame; /* 1d8 frame pointer on syscall entry */ +}; + +C_ASSERT( sizeof(struct arm_thread_data) <= sizeof(((struct ntdll_thread_data *)0)->cpu_data) ); +C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct arm_thread_data, exit_frame ) == 0x1d4 ); +C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct arm_thread_data, syscall_frame ) == 0x1d8 ); + +static inline struct arm_thread_data *arm_thread_data(void) +{ + return (struct arm_thread_data *)ntdll_get_thread_data()->cpu_data; +} +
/*********************************************************************** * unwind_builtin_dll diff --git a/tools/winebuild/import.c b/tools/winebuild/import.c index 09cb320b5d..3819225c7c 100644 --- a/tools/winebuild/import.c +++ b/tools/winebuild/import.c @@ -1561,20 +1561,45 @@ void output_syscalls( DLLSPEC *spec ) output( "\tjmp 3b\n" ); break; case CPU_ARM: - output( "\tldr r1, 4f\n" ); - output( "\tcmp r0, r1\n" ); - output( "\tbcs 2f\n" ); - output( "\tldr r1, 3f\n"); - output( "\tadd r1, pc\n"); - output( "\tldr ip, [r1, r0, lsl #2]\n"); - output( "1:\tpop {r0-r1}\n" ); - output( "\tbx ip\n"); - output( "2:\tpop {r0-r1}\n" ); - output( "\tldr r0,5f\n" ); - output( "bx lr\n" ); - output( "3:\t.long .Lsyscall_table-1b\n" ); - output( "4:\t.long %u\n", count ); - output( "5:\t.long 0x%x\n", invalid_param ); + output( "\tpush {r5-r11,lr}\n" ); + output( "\tadd r6, sp, #40\n" ); /* stack parameters */ + output( "\tldr r5, 8f\n" ); + output( "\tcmp r4, r5\n" ); + output( "\tbcs 5f\n" ); + output( "\tsub sp, sp, #8\n" ); + output( "\tpush {r0-r3}\n" ); + output( "\tbl %s\n", asm_name("NtCurrentTeb") ); + output( "\tadd r7, r0, #0x1d8\n" ); /* arm_thread_data()->syscall_frame */ + output( "\tpop {r0-r3}\n" ); + output( "\tldr r8, [r7]\n" ); + output( "\tstr r8, [sp]\n" ); /* prev frame */ + output( "\tstr sp, [r7]\n" ); /* syscall frame */ + output( "\tmrs ip, CPSR\n" ); + output( "\tstr ip, [sp, #4]\n" ); + output( "\tldr r5, 7f\n"); + output( "\tadd r5, pc\n"); + output( "\tldrb r5, [r5, r4]\n" ); /* syscall args */ + output( "1:\tsubs r5, #16\n" ); /* first 4 args are in registers */ + output( "\tble 3f\n" ); + output( "\tsub sp, r5\n" ); + output( "\tand sp, #~7\n" ); + output( "2:\tsubs r5, r5, #4\n" ); + output( "\tldr ip, [r6, r5]\n" ); + output( "\tstr ip, [sp, r5]\n" ); + output( "\tbgt 2b\n" ); + output( "3:\tldr r5, 6f\n"); + output( "\tadd r5, pc\n"); + output( "\tldr ip, [r5, r4, lsl #2]\n"); /* syscall table */ + output( "4:\tblx ip\n"); + output( "\tstr r8, [r7]\n" ); /* prev frame */ + output( "\tsub sp, r6, #40\n" ); + output( "\tpop {r5-r11,pc}\n" ); + output( "5:\tldr r0,9f\n" ); + output( "\tpop {r5-r11,pc}\n" ); + output( "6:\t.long .Lsyscall_table-4b\n" ); + output( "7:\t.long .Lsyscall_args-1b\n" ); + output( "8:\t.long %u\n", count ); + output( "9:\t.long 0x%x\n", invalid_param ); break; case CPU_ARM64: output( "\tcmp x8, %u\n", count ); @@ -1658,12 +1683,13 @@ void output_syscalls( DLLSPEC *spec ) output( "\tret\n" ); break; case CPU_ARM: - output( "\tpush {r0-r1}\n" ); - output( "\tldr r0, 3f\n"); - output( "\tldr r1, 2f\n"); - output( "\tadd r1, pc\n"); - output( "\tldr ip, [r1]\n"); - output( "1:\tbx ip\n"); + output( "\tpush {r4,lr}\n" ); + output( "\tldr r4, 3f\n"); + output( "\tldr ip, 2f\n"); + output( "\tadd ip, pc\n"); + output( "\tldr ip, [ip]\n"); + output( "1:\tblx ip\n"); + output( "\tpop {r4,pc}\n" ); output( "2:\t.long %s-1b\n", asm_name("__wine_syscall_dispatcher") ); output( "3:\t.long %u\n", i ); break;