152 lines
2.7 KiB
ArmAsm
152 lines
2.7 KiB
ArmAsm
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.section .text
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.type _start, @function
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.global _start
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_start:
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li a0, 1 # Num Warps
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csrw 0x20, a0 # Setting the number of available warps
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li a0, 2 # Num Threads
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csrw 0x21, a0 # Setting the number of available threads
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csrw mhartid,zero
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csrw misa,zero
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lui sp, 0x7ffff
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jal vx_before_main
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jal main
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ecall
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.type vx_createThreads, @function
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.global vx_createThreads
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vx_createThreads:
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mv s7 ,a3 # Moving args to s7
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mv s10,a4 # Moving assigned_warp to s10
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mv t5 ,sp # Saving the current stack pointer to t5
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mv t2 , a0 # t2 = num_threads
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loop_init:
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li a0,1 # i = 0
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loop_cond:
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bge a0, t2, loop_done # i < num_threads
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loop_body:
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addi sp,sp,-2048 # Allocate 2k stack for new thread
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mv t1, a0 # #lane = i
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.word 0x3506b # clone register state
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loop_inc:
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addi a0, a0, 1
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j loop_cond
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loop_done:
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mv sp,t5 # Restoring the stack
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li a0,0 # setting tid = 0 for main thread
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mv t6,a2 # setting func_addr
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mv s11,t2 # setting num_threads to spawn
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.word 0x1bfe0eb
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la a0, vx_reschedule_warps
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.word 0x5406b
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.type vx_wspawn, @function
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.global vx_wspawn
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vx_wspawn:
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la t1, vx_createThreads
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.word 0x3006b # WSPAWN instruction
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ret
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.global context
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.type vx_save_context, @function
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.global vx_save_context
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vx_save_context:
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la tp, context
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sw x0 , 0 (tp)
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sw x1 , 4 (tp)
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sw x2 , 8 (tp)
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sw x3 , 12(tp)
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sw x4 , 16(tp)
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sw x5 , 20(tp)
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sw x6 , 24(tp)
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sw x7 , 28(tp)
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sw x8 , 32(tp)
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sw x9 , 36(tp)
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sw x10, 40(tp)
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sw x11, 44(tp)
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sw x12, 48(tp)
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sw x13, 52(tp)
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sw x14, 56(tp)
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sw x15, 60(tp)
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sw x16, 64(tp)
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sw x17, 68(tp)
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sw x18, 72(tp)
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sw x19, 76(tp)
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sw x20, 80(tp)
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sw x21, 84(tp)
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sw x22, 88(tp)
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sw x23, 92(tp)
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sw x24, 96(tp)
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sw x25, 100(tp)
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sw x26, 104(tp)
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sw x27, 108(tp)
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sw x28, 112(tp)
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sw x29, 116(tp)
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sw x30, 120(tp)
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sw x31, 124(tp)
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li tp, 1
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ret
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.type vx_load_context, @function
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.global vx_load_context
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vx_load_context:
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la tp, context
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lw x0 , 0 (tp)
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lw x1 , 4 (tp)
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lw x2 , 8 (tp)
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lw x3 , 12(tp)
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lw x4 , 16(tp)
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lw x5 , 20(tp)
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lw x6 , 24(tp)
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lw x7 , 28(tp)
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lw x8 , 32(tp)
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lw x9 , 36(tp)
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lw x10, 40(tp)
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lw x11, 44(tp)
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lw x12, 48(tp)
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lw x13, 52(tp)
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lw x14, 56(tp)
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lw x15, 60(tp)
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lw x16, 64(tp)
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lw x17, 68(tp)
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lw x18, 72(tp)
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lw x19, 76(tp)
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lw x20, 80(tp)
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lw x21, 84(tp)
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lw x22, 88(tp)
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lw x23, 92(tp)
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lw x24, 96(tp)
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lw x25, 100(tp)
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lw x26, 104(tp)
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lw x27, 108(tp)
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lw x28, 112(tp)
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lw x29, 116(tp)
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lw x30, 120(tp)
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lw x31, 124(tp)
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li tp, 0
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ret
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.type vx_available_warps, @function
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.global vx_available_warps
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vx_available_warps:
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csrr a0, 0x20
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ret
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.type vx_available_threads, @function
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.global vx_available_threads
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vx_available_threads:
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csrr a0, 0x21
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ret
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