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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | /** @addtogroup arm32 |
29 | /** @addtogroup arm32 |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | * @brief Declarations of functions implemented in assembly. |
33 | * @brief Declarations of functions implemented in assembly. |
| 34 | */ |
34 | */ |
| 35 | 35 | ||
| 36 | #ifndef KERN_arm32_ASM_H_ |
36 | #ifndef KERN_arm32_ASM_H_ |
| 37 | #define KERN_arm32_ASM_H_ |
37 | #define KERN_arm32_ASM_H_ |
| Line 75... | Line 75... | ||
| 75 | { |
75 | { |
| 76 | return *port; |
76 | return *port; |
| 77 | } |
77 | } |
| 78 | 78 | ||
| 79 | /** Return base address of current stack. |
79 | /** Return base address of current stack. |
| 80 | * |
80 | * |
| 81 | * Return the base address of the current stack. |
81 | * Return the base address of the current stack. |
| 82 | * The stack is assumed to be STACK_SIZE bytes long. |
82 | * The stack is assumed to be STACK_SIZE bytes long. |
| 83 | * The stack must start on page boundary. |
83 | * The stack must start on page boundary. |
| - | 84 | * |
|
| 84 | */ |
85 | */ |
| 85 | static inline uintptr_t get_stack_base(void) |
86 | static inline uintptr_t get_stack_base(void) |
| 86 | { |
87 | { |
| 87 | uintptr_t v; |
88 | uintptr_t v; |
| 88 | asm volatile ( |
89 | asm volatile ( |
| 89 | "and %0, sp, %1\n" |
90 | "and %[v], sp, %[size]\n" |
| 90 | : "=r" (v) |
91 | : [v] "=r" (v) |
| 91 | : "r" (~(STACK_SIZE - 1)) |
92 | : [size] "r" (~(STACK_SIZE - 1)) |
| 92 | ); |
93 | ); |
| 93 | return v; |
94 | return v; |
| 94 | } |
95 | } |
| 95 | 96 | ||
| 96 | extern void cpu_halt(void); |
97 | extern void cpu_halt(void); |