1c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner/**************************************************************************** 2c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner **************************************************************************** 3c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** 4c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** This header was automatically generated from a Linux kernel header 5c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** of the same name, to make information necessary for userspace to 6c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** call into the kernel available to libc. It contains only constants, 7c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** structures, and macros generated from the original header, and thus, 8c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** contains no copyrightable information. 9c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** 10c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner **************************************************************************** 11c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner ****************************************************************************/ 12c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#ifndef __ASM_PROC_LOCKS_H 13c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __ASM_PROC_LOCKS_H 14c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 15c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#if __LINUX_ARM_ARCH__ >= 6 16c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 17c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __down_op(ptr,fail) ({ __asm__ __volatile__( "@ down_op\n" "1: ldrex lr, [%0]\n" " sub lr, lr, %1\n" " strex ip, lr, [%0]\n" " teq ip, #0\n" " bne 1b\n" " teq lr, #0\n" " movmi ip, %0\n" " blmi " #fail : : "r" (ptr), "I" (1) : "ip", "lr", "cc"); smp_mb(); }) 18c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 19c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __down_op_ret(ptr,fail) ({ unsigned int ret; __asm__ __volatile__( "@ down_op_ret\n" "1: ldrex lr, [%1]\n" " sub lr, lr, %2\n" " strex ip, lr, [%1]\n" " teq ip, #0\n" " bne 1b\n" " teq lr, #0\n" " movmi ip, %1\n" " movpl ip, #0\n" " blmi " #fail "\n" " mov %0, ip" : "=&r" (ret) : "r" (ptr), "I" (1) : "ip", "lr", "cc"); smp_mb(); ret; }) 20c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 21c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __up_op(ptr,wake) ({ smp_mb(); __asm__ __volatile__( "@ up_op\n" "1: ldrex lr, [%0]\n" " add lr, lr, %1\n" " strex ip, lr, [%0]\n" " teq ip, #0\n" " bne 1b\n" " cmp lr, #0\n" " movle ip, %0\n" " blle " #wake : : "r" (ptr), "I" (1) : "ip", "lr", "cc"); }) 22c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 23c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define RW_LOCK_BIAS 0x01000000 24c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define RW_LOCK_BIAS_STR "0x01000000" 25c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 26c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __down_op_write(ptr,fail) ({ __asm__ __volatile__( "@ down_op_write\n" "1: ldrex lr, [%0]\n" " sub lr, lr, %1\n" " strex ip, lr, [%0]\n" " teq ip, #0\n" " bne 1b\n" " teq lr, #0\n" " movne ip, %0\n" " blne " #fail : : "r" (ptr), "I" (RW_LOCK_BIAS) : "ip", "lr", "cc"); smp_mb(); }) 27c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 28c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __up_op_write(ptr,wake) ({ smp_mb(); __asm__ __volatile__( "@ up_op_write\n" "1: ldrex lr, [%0]\n" " adds lr, lr, %1\n" " strex ip, lr, [%0]\n" " teq ip, #0\n" " bne 1b\n" " movcs ip, %0\n" " blcs " #wake : : "r" (ptr), "I" (RW_LOCK_BIAS) : "ip", "lr", "cc"); }) 29c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 30c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __down_op_read(ptr,fail) __down_op(ptr, fail) 31c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 32c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __up_op_read(ptr,wake) ({ smp_mb(); __asm__ __volatile__( "@ up_op_read\n" "1: ldrex lr, [%0]\n" " add lr, lr, %1\n" " strex ip, lr, [%0]\n" " teq ip, #0\n" " bne 1b\n" " teq lr, #0\n" " moveq ip, %0\n" " bleq " #wake : : "r" (ptr), "I" (1) : "ip", "lr", "cc"); }) 33c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 34c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#else 35c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 36c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __down_op(ptr,fail) ({ __asm__ __volatile__( "@ down_op\n" " mrs ip, cpsr\n" " orr lr, ip, #128\n" " msr cpsr_c, lr\n" " ldr lr, [%0]\n" " subs lr, lr, %1\n" " str lr, [%0]\n" " msr cpsr_c, ip\n" " movmi ip, %0\n" " blmi " #fail : : "r" (ptr), "I" (1) : "ip", "lr", "cc"); smp_mb(); }) 37c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 38c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __down_op_ret(ptr,fail) ({ unsigned int ret; __asm__ __volatile__( "@ down_op_ret\n" " mrs ip, cpsr\n" " orr lr, ip, #128\n" " msr cpsr_c, lr\n" " ldr lr, [%1]\n" " subs lr, lr, %2\n" " str lr, [%1]\n" " msr cpsr_c, ip\n" " movmi ip, %1\n" " movpl ip, #0\n" " blmi " #fail "\n" " mov %0, ip" : "=&r" (ret) : "r" (ptr), "I" (1) : "ip", "lr", "cc"); smp_mb(); ret; }) 39c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 40c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __up_op(ptr,wake) ({ smp_mb(); __asm__ __volatile__( "@ up_op\n" " mrs ip, cpsr\n" " orr lr, ip, #128\n" " msr cpsr_c, lr\n" " ldr lr, [%0]\n" " adds lr, lr, %1\n" " str lr, [%0]\n" " msr cpsr_c, ip\n" " movle ip, %0\n" " blle " #wake : : "r" (ptr), "I" (1) : "ip", "lr", "cc"); }) 41c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 42c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define RW_LOCK_BIAS 0x01000000 43c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define RW_LOCK_BIAS_STR "0x01000000" 44c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 45c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __down_op_write(ptr,fail) ({ __asm__ __volatile__( "@ down_op_write\n" " mrs ip, cpsr\n" " orr lr, ip, #128\n" " msr cpsr_c, lr\n" " ldr lr, [%0]\n" " subs lr, lr, %1\n" " str lr, [%0]\n" " msr cpsr_c, ip\n" " movne ip, %0\n" " blne " #fail : : "r" (ptr), "I" (RW_LOCK_BIAS) : "ip", "lr", "cc"); smp_mb(); }) 46c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 47c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __up_op_write(ptr,wake) ({ __asm__ __volatile__( "@ up_op_write\n" " mrs ip, cpsr\n" " orr lr, ip, #128\n" " msr cpsr_c, lr\n" " ldr lr, [%0]\n" " adds lr, lr, %1\n" " str lr, [%0]\n" " msr cpsr_c, ip\n" " movcs ip, %0\n" " blcs " #wake : : "r" (ptr), "I" (RW_LOCK_BIAS) : "ip", "lr", "cc"); smp_mb(); }) 48c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 49c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __down_op_read(ptr,fail) __down_op(ptr, fail) 50c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 51c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __up_op_read(ptr,wake) ({ smp_mb(); __asm__ __volatile__( "@ up_op_read\n" " mrs ip, cpsr\n" " orr lr, ip, #128\n" " msr cpsr_c, lr\n" " ldr lr, [%0]\n" " adds lr, lr, %1\n" " str lr, [%0]\n" " msr cpsr_c, ip\n" " moveq ip, %0\n" " bleq " #wake : : "r" (ptr), "I" (1) : "ip", "lr", "cc"); }) 52c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 53c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#endif 54c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 55c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#endif 56