MdePkg/BaseLib: BaseLib for RISCV64 architecture

[mirror_edk2.git] / MdePkg / Library / BaseLib / RiscV64 / RiscVSetJumpLongJump.S

diff --git a/MdePkg/Library/BaseLib/RiscV64/RiscVSetJumpLongJump.S b/MdePkg/Library/BaseLib/RiscV64/RiscVSetJumpLongJump.S
new file mode 100644 (file)
index 0000000..34486ea
--- /dev/null
+++ b/MdePkg/Library/BaseLib/RiscV64/RiscVSetJumpLongJump.S
@@ -0,0 +1,55 @@
+//------------------------------------------------------------------------------\r
+//\r
+// Set/Long jump for RISC-V\r
+//\r
+// Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>\r
+//\r
+// SPDX-License-Identifier: BSD-2-Clause-Patent\r
+//\r
+//------------------------------------------------------------------------------\r
+# define REG_S  sd\r
+# define REG_L  ld\r
+# define SZREG  8\r
+.align 3\r
+    .globl  SetJump\r
+\r
+SetJump:\r
+    REG_S ra,  0*SZREG(a0)\r
+    REG_S s0,  1*SZREG(a0)\r
+    REG_S s1,  2*SZREG(a0)\r
+    REG_S s2,  3*SZREG(a0)\r
+    REG_S s3,  4*SZREG(a0)\r
+    REG_S s4,  5*SZREG(a0)\r
+    REG_S s5,  6*SZREG(a0)\r
+    REG_S s6,  7*SZREG(a0)\r
+    REG_S s7,  8*SZREG(a0)\r
+    REG_S s8,  9*SZREG(a0)\r
+    REG_S s9,  10*SZREG(a0)\r
+    REG_S s10, 11*SZREG(a0)\r
+    REG_S s11, 12*SZREG(a0)\r
+    REG_S sp,  13*SZREG(a0)\r
+    li    a0,  0\r
+    ret\r
+\r
+    .globl  InternalLongJump\r
+InternalLongJump:\r
+    REG_L ra,  0*SZREG(a0)\r
+    REG_L s0,  1*SZREG(a0)\r
+    REG_L s1,  2*SZREG(a0)\r
+    REG_L s2,  3*SZREG(a0)\r
+    REG_L s3,  4*SZREG(a0)\r
+    REG_L s4,  5*SZREG(a0)\r
+    REG_L s5,  6*SZREG(a0)\r
+    REG_L s6,  7*SZREG(a0)\r
+    REG_L s7,  8*SZREG(a0)\r
+    REG_L s8,  9*SZREG(a0)\r
+    REG_L s9,  10*SZREG(a0)\r
+    REG_L s10, 11*SZREG(a0)\r
+    REG_L s11, 12*SZREG(a0)\r
+    REG_L sp,  13*SZREG(a0)\r
+\r
+    add   a0, s0, 0\r
+    add   a1, s1, 0\r
+    add   a2, s2, 0\r
+    add   a3, s3, 0\r
+    ret\r