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Unified Diff: src/common/linux/linux_syscall_support.h

Issue 543125: Port linux_syscall_support and linux_dumper to support Linux ARM. Unit tests... (Closed) Base URL: http://google-breakpad.googlecode.com/svn/trunk/
Patch Set: '' Created 10 years, 11 months ago
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Index: src/common/linux/linux_syscall_support.h
===================================================================
--- src/common/linux/linux_syscall_support.h (revision 400)
+++ src/common/linux/linux_syscall_support.h (working copy)
@@ -77,7 +77,8 @@
* Porting to other related platforms should not be difficult.
*/
#if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) || \
- defined(__mips__) || defined(__PPC__)) && defined(__linux)
+ defined(__mips__) || defined(__PPC__) || defined(__ARM_EABI__)) \
+ && defined(__linux)
#ifndef SYS_CPLUSPLUS
#ifdef __cplusplus
@@ -105,7 +106,6 @@
/* Include definitions of the ABI currently in use. */
#include <sgidefs.h>
#endif
-
#endif
/* As glibc often provides subtly incompatible data structures (and implicit
@@ -217,7 +217,8 @@
};
struct siginfo;
-#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__PPC__)
+#if defined(__i386__) || defined(__ARM_EABI__) || defined(__ARM_ARCH_3__) \
+ || defined(__PPC__)
/* include/asm-{arm,i386,mips,ppc}/signal.h */
struct kernel_old_sigaction {
@@ -354,7 +355,7 @@
#endif
/* include/asm-{arm,i386,mips,x86_64,ppc}/stat.h */
-#if defined(__i386__) || defined(__ARM_ARCH_3__)
+#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
struct kernel_stat {
/* The kernel headers suggest that st_dev and st_rdev should be 32bit
* quantities encoding 12bit major and 20bit minor numbers in an interleaved
@@ -520,7 +521,7 @@
/* Definitions missing from the standard header files */
#ifndef O_DIRECTORY
-#if defined(__ARM_ARCH_3__)
+#if defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
#define O_DIRECTORY 0040000
#else
#define O_DIRECTORY 0200000
@@ -641,7 +642,7 @@
#define __NR_move_pages 317
#endif
/* End of i386 definitions */
-#elif defined(__ARM_ARCH_3__)
+#elif defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
#ifndef __NR_setresuid
#define __NR_setresuid (__NR_SYSCALL_BASE + 164)
#define __NR_setresgid (__NR_SYSCALL_BASE + 170)
@@ -715,7 +716,7 @@
#ifndef __NR_move_pages
#define __NR_move_pages (__NR_SYSCALL_BASE + 344)
#endif
-/* End of ARM 3 definitions */
+/* End of ARM 3/EABI definitions */
#elif defined(__x86_64__)
#ifndef __NR_setresuid
#define __NR_setresuid 117
@@ -1087,7 +1088,8 @@
#endif
#undef LSS_RETURN
- #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__))
+ #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) \
+ || defined(__ARM_EABI__))
/* Failing system calls return a negative result in the range of
* -1..-4095. These are "errno" values with the sign inverted.
*/
@@ -1526,11 +1528,6 @@
return res;
}
#elif defined(__ARM_ARCH_3__)
- /* Most definitions of _syscallX() neglect to mark "memory" as being
- * clobbered. This causes problems with compilers, that do a better job
- * at optimizing across __asm__ calls.
- * So, we just have to redefine all fo the _syscallX() macros.
- */
#undef LSS_REG
#define LSS_REG(r,a) register long __r##r __asm__("r"#r) = (long)a
#undef LSS_BODY
@@ -1646,6 +1643,135 @@
}
LSS_RETURN(int, __res);
}
+ #elif defined(__ARM_EABI__)
+ /* Most definitions of _syscallX() neglect to mark "memory" as being
+ * clobbered. This causes problems with compilers, that do a better job
+ * at optimizing across __asm__ calls.
+ * So, we just have to redefine all fo the _syscallX() macros.
+ */
+ #undef LSS_REG
+ #define LSS_REG(r,a) register long __r##r __asm__("r"#r) = (long)a
+ #undef LSS_BODY
+ #define LSS_BODY(type,name,args...) \
+ register long __res_r0 __asm__("r0"); \
+ long __res; \
+ __asm__ __volatile__ ("push {r7}\n" \
+ "mov r7, %1\n" \
+ "swi 0x0\n" \
+ "pop {r7}\n" \
+ : "=r"(__res_r0) \
+ : "i"(__NR_##name) , ## args \
+ : "lr", "memory"); \
+ __res = __res_r0; \
+ LSS_RETURN(type, __res)
+ #undef _syscall0
+ #define _syscall0(type, name) \
+ type LSS_NAME(name)() { \
+ LSS_BODY(type, name); \
+ }
+ #undef _syscall1
+ #define _syscall1(type, name, type1, arg1) \
+ type LSS_NAME(name)(type1 arg1) { \
+ LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0)); \
+ }
+ #undef _syscall2
+ #define _syscall2(type, name, type1, arg1, type2, arg2) \
+ type LSS_NAME(name)(type1 arg1, type2 arg2) { \
+ LSS_REG(0, arg1); LSS_REG(1, arg2); \
+ LSS_BODY(type, name, "r"(__r0), "r"(__r1)); \
+ }
+ #undef _syscall3
+ #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
+ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \
+ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
+ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2)); \
+ }
+ #undef _syscall4
+ #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
+ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
+ LSS_REG(3, arg4); \
+ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3)); \
+ }
+ #undef _syscall5
+ #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+ type5,arg5) \
+ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
+ type5 arg5) { \
+ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
+ LSS_REG(3, arg4); LSS_REG(4, arg5); \
+ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \
+ "r"(__r4)); \
+ }
+ #undef _syscall6
+ #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+ type5,arg5,type6,arg6) \
+ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
+ type5 arg5, type6 arg6) { \
+ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \
+ LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6); \
+ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \
+ "r"(__r4), "r"(__r5)); \
+ }
+ LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+ int flags, void *arg, int *parent_tidptr,
+ void *newtls, int *child_tidptr) {
+ long __res;
+ {
+ register int __flags __asm__("r0") = flags;
+ register void *__stack __asm__("r1") = child_stack;
+ register void *__ptid __asm__("r2") = parent_tidptr;
+ register void *__tls __asm__("r3") = newtls;
+ register int *__ctid __asm__("r4") = child_tidptr;
+ __asm__ __volatile__(/* if (fn == NULL || child_stack == NULL)
+ * return -EINVAL;
+ */
+ "cmp %2,#0\n"
+ "cmpne %3,#0\n"
+ "moveq %0,%1\n"
+ "beq 1f\n"
+
+ /* Push "arg" and "fn" onto the stack that will be
+ * used by the child.
+ */
+ "str %5,[%3,#-4]!\n"
+ "str %2,[%3,#-4]!\n"
+
+ /* %r0 = syscall(%r0 = flags,
+ * %r1 = child_stack,
+ * %r2 = parent_tidptr,
+ * %r3 = newtls,
+ * %r4 = child_tidptr)
+ */
+ "mov r7, %9\n"
+ "swi 0x0\n"
+
+ /* if (%r0 != 0)
+ * return %r0;
+ */
+ "movs %0,r0\n"
+ "bne 1f\n"
+
+ /* In the child, now. Call "fn(arg)".
+ */
+ "ldr r0,[sp, #4]\n"
+ "mov lr,pc\n"
+ "ldr pc,[sp]\n"
+
+ /* Call _exit(%r0).
+ */
+ "mov r7, %10\n"
+ "swi 0x0\n"
+ "1:\n"
+ : "=r" (__res)
+ : "i"(-EINVAL),
+ "r"(fn), "r"(__stack), "r"(__flags), "r"(arg),
+ "r"(__ptid), "r"(__tls), "r"(__ctid),
+ "i"(__NR_clone), "i"(__NR_exit)
+ : "lr", "memory");
+ }
+ LSS_RETURN(int, __res);
+ }
#elif defined(__mips__)
#undef LSS_REG
#define LSS_REG(r,a) register unsigned long __r##r __asm__("$"#r) = \
@@ -2082,8 +2208,10 @@
LSS_INLINE _syscall0(pid_t, getppid)
LSS_INLINE _syscall2(int, getpriority, int, a,
int, b)
+#if !defined(__ARM_EABI__)
LSS_INLINE _syscall2(int, getrlimit, int, r,
struct kernel_rlimit*, l)
+#endif
LSS_INLINE _syscall1(pid_t, getsid, pid_t, p)
LSS_INLINE _syscall0(pid_t, _gettid)
LSS_INLINE _syscall5(int, setxattr, const char *,p,
@@ -2237,6 +2365,7 @@
}
#endif
#if defined(__x86_64__) || defined(__ARM_ARCH_3__) || \
+ defined(__ARM_EABI__) || \
(defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI32)
LSS_INLINE _syscall4(pid_t, wait4, pid_t, p,
int*, s, int, o,
@@ -2250,13 +2379,15 @@
LSS_INLINE _syscall4(int, openat, int, d, const char *, p, int, f, int, m)
LSS_INLINE _syscall3(int, unlinkat, int, d, const char *, p, int, f)
#endif
- #if defined(__i386__) || defined(__ARM_ARCH_3__)
+ #if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
#define __NR__setfsgid32 __NR_setfsgid32
#define __NR__setfsuid32 __NR_setfsuid32
#define __NR__setresgid32 __NR_setresgid32
#define __NR__setresuid32 __NR_setresuid32
+#if defined(__ARM_EABI__)
LSS_INLINE _syscall2(int, ugetrlimit, int, r,
struct kernel_rlimit*, l)
+#endif
LSS_INLINE _syscall1(int, _setfsgid32, gid_t, f)
LSS_INLINE _syscall1(int, _setfsuid32, uid_t, f)
LSS_INLINE _syscall3(int, _setresgid32, gid_t, r,
@@ -2365,6 +2496,7 @@
}
}
#if defined(__i386__) || defined(__ARM_ARCH_3__) || \
+ defined(__ARM_EABI__) || \
(defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) || defined(__PPC__)
#define __NR__sigaction __NR_sigaction
#define __NR__sigpending __NR_sigpending
@@ -2375,7 +2507,9 @@
struct kernel_stat64 *, b)
LSS_INLINE _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
loff_t *, res, uint, wh)
+#if !defined(__ARM_EABI__)
LSS_INLINE _syscall1(void*, mmap, void*, a)
+#endif
LSS_INLINE _syscall6(void*, mmap2, void*, s,
size_t, l, int, p,
int, f, int, d,
@@ -2590,12 +2724,24 @@
LSS_SC_BODY(4, int, 8, d, type, protocol, sv);
}
#endif
- #if defined(__i386__) || defined(__ARM_ARCH_3__) || \
+ #if defined(__ARM_EABI__)
+ LSS_INLINE _syscall3(ssize_t, recvmsg, int, s, struct kernel_msghdr*, msg,
+ int, flags);
+ LSS_INLINE _syscall3(ssize_t, sendmsg, int, s, const struct kernel_msghdr*,
+ msg, int, flags);
+ LSS_INLINE _syscall6(ssize_t, sendto, int, s, const void*, buf, size_t, len,
+ int, falgs, const struct kernel_sockaddr*, to,
+ unsigned int, tolen);
+ LSS_INLINE _syscall2(int, shutdown, int, s, int, how);
+ LSS_INLINE _syscall3(int, socket, int, domain, int, type, int, protocol);
+ LSS_INLINE _syscall4(int, socketpair, int, d, int, type, int, protocol,
+ int*, sv);
+ #endif
+ #if defined(__i386__) || defined(__ARM_ARCH_3__) || \
(defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32)
#define __NR__socketcall __NR_socketcall
LSS_INLINE _syscall2(int, _socketcall, int, c,
va_list, a)
-
LSS_INLINE int LSS_NAME(socketcall)(int op, ...) {
int rc;
va_list ap;
@@ -2604,29 +2750,24 @@
va_end(ap);
return rc;
}
-
LSS_INLINE ssize_t LSS_NAME(recvmsg)(int s,struct kernel_msghdr *msg,
int flags){
return (ssize_t)LSS_NAME(socketcall)(17, s, msg, flags);
}
-
LSS_INLINE ssize_t LSS_NAME(sendmsg)(int s,
const struct kernel_msghdr *msg,
int flags) {
return (ssize_t)LSS_NAME(socketcall)(16, s, msg, flags);
}
-
LSS_INLINE ssize_t LSS_NAME(sendto)(int s, const void *buf, size_t len,
int flags,
const struct kernel_sockaddr *to,
unsigned int tolen) {
return (ssize_t)LSS_NAME(socketcall)(11, s, buf, len, flags, to, tolen);
}
-
LSS_INLINE int LSS_NAME(shutdown)(int s, int how) {
return LSS_NAME(socketcall)(13, s, how);
}
-
LSS_INLINE int LSS_NAME(socket)(int domain, int type, int protocol) {
return LSS_NAME(socketcall)(1, domain, type, protocol);
}
@@ -2673,6 +2814,7 @@
#endif
/* TODO(csilvers): see if ppc can/should support this as well */
#if defined(__i386__) || defined(__ARM_ARCH_3__) || \
+ defined(__ARM_EABI__) || \
(defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64)
#define __NR__statfs64 __NR_statfs64
#define __NR__fstatfs64 __NR_fstatfs64
@@ -2743,8 +2885,13 @@
switch (name) {
case _SC_OPEN_MAX: {
struct kernel_rlimit limit;
+#if defined(__ARM_EABI__)
+ return LSS_NAME(ugetrlimit)(RLIMIT_NOFILE, &limit) < 0
+ ? 8192 : limit.rlim_cur;
+#else
return LSS_NAME(getrlimit)(RLIMIT_NOFILE, &limit) < 0
- ? 8192 : limit.rlim_cur;
+ ? 8192 : limit.rlim_cur;
+#endif
}
case _SC_PAGESIZE:
return __getpagesize();
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