[PATCH 6.13 015/138] drm/amdkfd: Move gfx12 trap handler to separate file

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

6.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jay Cornwall <jay.cornwall@amd.com>

[ Upstream commit 62498e797aeb2bfa92a823ee1a8253f96d1cbe3f ]

gfx12 derivatives will have substantially different trap handler
implementations from gfx10/gfx11. Add a separate source file for
gfx12+ and remove unneeded conditional code.

No functional change.

v2: Revert copyright date to 2018, minor comment fixes

Signed-off-by: Jay Cornwall <jay.cornwall@amd.com>
Reviewed-by: Lancelot Six <lancelot.six@amd.com>
Cc: Jonathan Kim <jonathan.kim@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Stable-dep-of: d584198a6fe4 ("drm/amdkfd: Ensure consistent barrier state saved in gfx12 trap handler")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../amd/amdkfd/cwsr_trap_handler_gfx10.asm    |  202 +--
 .../amd/amdkfd/cwsr_trap_handler_gfx12.asm    | 1126 +++++++++++++++++
 2 files changed, 1127 insertions(+), 201 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx12.asm

diff --git a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx10.asm b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx10.asm
index 44772eec9ef4d..96fbb16ceb216 100644
--- a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx10.asm
+++ b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx10.asm
@@ -34,41 +34,24 @@
  *   cpp -DASIC_FAMILY=CHIP_PLUM_BONITO cwsr_trap_handler_gfx10.asm -P -o gfx11.sp3
  *   sp3 gfx11.sp3 -hex gfx11.hex
  *
- * gfx12:
- *   cpp -DASIC_FAMILY=CHIP_GFX12 cwsr_trap_handler_gfx10.asm -P -o gfx12.sp3
- *   sp3 gfx12.sp3 -hex gfx12.hex
  */
 
 #define CHIP_NAVI10 26
 #define CHIP_SIENNA_CICHLID 30
 #define CHIP_PLUM_BONITO 36
-#define CHIP_GFX12 37
 
 #define NO_SQC_STORE (ASIC_FAMILY >= CHIP_SIENNA_CICHLID)
 #define HAVE_XNACK (ASIC_FAMILY < CHIP_SIENNA_CICHLID)
 #define HAVE_SENDMSG_RTN (ASIC_FAMILY >= CHIP_PLUM_BONITO)
 #define HAVE_BUFFER_LDS_LOAD (ASIC_FAMILY < CHIP_PLUM_BONITO)
-#define SW_SA_TRAP (ASIC_FAMILY >= CHIP_PLUM_BONITO && ASIC_FAMILY < CHIP_GFX12)
+#define SW_SA_TRAP (ASIC_FAMILY == CHIP_PLUM_BONITO)
 #define SAVE_AFTER_XNACK_ERROR (HAVE_XNACK && !NO_SQC_STORE) // workaround for TCP store failure after XNACK error when ALLOW_REPLAY=0, for debugger
 #define SINGLE_STEP_MISSED_WORKAROUND 1	//workaround for lost MODE.DEBUG_EN exception when SAVECTX raised
 
-#if ASIC_FAMILY < CHIP_GFX12
 #define S_COHERENCE glc:1
 #define V_COHERENCE slc:1 glc:1
 #define S_WAITCNT_0 s_waitcnt 0
-#else
-#define S_COHERENCE scope:SCOPE_SYS
-#define V_COHERENCE scope:SCOPE_SYS
-#define S_WAITCNT_0 s_wait_idle
-
-#define HW_REG_SHADER_FLAT_SCRATCH_LO HW_REG_WAVE_SCRATCH_BASE_LO
-#define HW_REG_SHADER_FLAT_SCRATCH_HI HW_REG_WAVE_SCRATCH_BASE_HI
-#define HW_REG_GPR_ALLOC HW_REG_WAVE_GPR_ALLOC
-#define HW_REG_LDS_ALLOC HW_REG_WAVE_LDS_ALLOC
-#define HW_REG_MODE HW_REG_WAVE_MODE
-#endif
 
-#if ASIC_FAMILY < CHIP_GFX12
 var SQ_WAVE_STATUS_SPI_PRIO_MASK		= 0x00000006
 var SQ_WAVE_STATUS_HALT_MASK			= 0x2000
 var SQ_WAVE_STATUS_ECC_ERR_MASK			= 0x20000
@@ -81,21 +64,6 @@ var S_STATUS_ALWAYS_CLEAR_MASK			= SQ_WAVE_STATUS_SPI_PRIO_MASK|SQ_WAVE_STATUS_E
 var S_STATUS_HALT_MASK				= SQ_WAVE_STATUS_HALT_MASK
 var S_SAVE_PC_HI_TRAP_ID_MASK			= 0x00FF0000
 var S_SAVE_PC_HI_HT_MASK			= 0x01000000
-#else
-var SQ_WAVE_STATE_PRIV_BARRIER_COMPLETE_MASK	= 0x4
-var SQ_WAVE_STATE_PRIV_SCC_SHIFT		= 9
-var SQ_WAVE_STATE_PRIV_SYS_PRIO_MASK		= 0xC00
-var SQ_WAVE_STATE_PRIV_HALT_MASK		= 0x4000
-var SQ_WAVE_STATE_PRIV_POISON_ERR_MASK		= 0x8000
-var SQ_WAVE_STATE_PRIV_POISON_ERR_SHIFT		= 15
-var SQ_WAVE_STATUS_WAVE64_SHIFT			= 29
-var SQ_WAVE_STATUS_WAVE64_SIZE			= 1
-var SQ_WAVE_LDS_ALLOC_GRANULARITY		= 9
-var S_STATUS_HWREG				= HW_REG_WAVE_STATE_PRIV
-var S_STATUS_ALWAYS_CLEAR_MASK			= SQ_WAVE_STATE_PRIV_SYS_PRIO_MASK|SQ_WAVE_STATE_PRIV_POISON_ERR_MASK
-var S_STATUS_HALT_MASK				= SQ_WAVE_STATE_PRIV_HALT_MASK
-var S_SAVE_PC_HI_TRAP_ID_MASK			= 0xF0000000
-#endif
 
 var SQ_WAVE_STATUS_NO_VGPRS_SHIFT		= 24
 var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT		= 12
@@ -110,7 +78,6 @@ var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT		= 8
 var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT		= 12
 #endif
 
-#if ASIC_FAMILY < CHIP_GFX12
 var SQ_WAVE_TRAPSTS_SAVECTX_MASK		= 0x400
 var SQ_WAVE_TRAPSTS_EXCP_MASK			= 0x1FF
 var SQ_WAVE_TRAPSTS_SAVECTX_SHIFT		= 10
@@ -161,39 +128,6 @@ var S_TRAPSTS_RESTORE_PART_3_SIZE		= 32 - S_TRAPSTS_RESTORE_PART_3_SHIFT
 var S_TRAPSTS_HWREG				= HW_REG_TRAPSTS
 var S_TRAPSTS_SAVE_CONTEXT_MASK			= SQ_WAVE_TRAPSTS_SAVECTX_MASK
 var S_TRAPSTS_SAVE_CONTEXT_SHIFT		= SQ_WAVE_TRAPSTS_SAVECTX_SHIFT
-#else
-var SQ_WAVE_EXCP_FLAG_PRIV_ADDR_WATCH_MASK	= 0xF
-var SQ_WAVE_EXCP_FLAG_PRIV_MEM_VIOL_MASK	= 0x10
-var SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_SHIFT	= 5
-var SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_MASK	= 0x20
-var SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_MASK	= 0x40
-var SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_SHIFT	= 6
-var SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_MASK	= 0x80
-var SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_SHIFT	= 7
-var SQ_WAVE_EXCP_FLAG_PRIV_WAVE_START_MASK	= 0x100
-var SQ_WAVE_EXCP_FLAG_PRIV_WAVE_START_SHIFT	= 8
-var SQ_WAVE_EXCP_FLAG_PRIV_WAVE_END_MASK	= 0x200
-var SQ_WAVE_EXCP_FLAG_PRIV_TRAP_AFTER_INST_MASK	= 0x800
-var SQ_WAVE_TRAP_CTRL_ADDR_WATCH_MASK		= 0x80
-var SQ_WAVE_TRAP_CTRL_TRAP_AFTER_INST_MASK	= 0x200
-
-var S_TRAPSTS_HWREG				= HW_REG_WAVE_EXCP_FLAG_PRIV
-var S_TRAPSTS_SAVE_CONTEXT_MASK			= SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_MASK
-var S_TRAPSTS_SAVE_CONTEXT_SHIFT		= SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_SHIFT
-var S_TRAPSTS_NON_MASKABLE_EXCP_MASK		= SQ_WAVE_EXCP_FLAG_PRIV_MEM_VIOL_MASK		|\
-						  SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_MASK	|\
-						  SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_MASK		|\
-						  SQ_WAVE_EXCP_FLAG_PRIV_WAVE_START_MASK	|\
-						  SQ_WAVE_EXCP_FLAG_PRIV_WAVE_END_MASK		|\
-						  SQ_WAVE_EXCP_FLAG_PRIV_TRAP_AFTER_INST_MASK
-var S_TRAPSTS_RESTORE_PART_1_SIZE		= SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_SHIFT
-var S_TRAPSTS_RESTORE_PART_2_SHIFT		= SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_SHIFT
-var S_TRAPSTS_RESTORE_PART_2_SIZE		= SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_SHIFT - SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_SHIFT
-var S_TRAPSTS_RESTORE_PART_3_SHIFT		= SQ_WAVE_EXCP_FLAG_PRIV_WAVE_START_SHIFT
-var S_TRAPSTS_RESTORE_PART_3_SIZE		= 32 - S_TRAPSTS_RESTORE_PART_3_SHIFT
-var BARRIER_STATE_SIGNAL_OFFSET			= 16
-var BARRIER_STATE_VALID_OFFSET			= 0
-#endif
 
 // bits [31:24] unused by SPI debug data
 var TTMP11_SAVE_REPLAY_W64H_SHIFT		= 31
@@ -305,11 +239,7 @@ L_TRAP_NO_BARRIER:
 
 L_HALTED:
 	// Host trap may occur while wave is halted.
-#if ASIC_FAMILY < CHIP_GFX12
 	s_and_b32	ttmp2, s_save_pc_hi, S_SAVE_PC_HI_TRAP_ID_MASK
-#else
-	s_and_b32	ttmp2, s_save_trapsts, SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_MASK
-#endif
 	s_cbranch_scc1	L_FETCH_2ND_TRAP
 
 L_CHECK_SAVE:
@@ -336,7 +266,6 @@ L_NOT_HALTED:
 	// Check for maskable exceptions in trapsts.excp and trapsts.excp_hi.
 	// Maskable exceptions only cause the wave to enter the trap handler if
 	// their respective bit in mode.excp_en is set.
-#if ASIC_FAMILY < CHIP_GFX12
 	s_and_b32	ttmp2, s_save_trapsts, SQ_WAVE_TRAPSTS_EXCP_MASK|SQ_WAVE_TRAPSTS_EXCP_HI_MASK
 	s_cbranch_scc0	L_CHECK_TRAP_ID
 
@@ -349,17 +278,6 @@ L_NOT_ADDR_WATCH:
 	s_lshl_b32	ttmp2, ttmp2, SQ_WAVE_MODE_EXCP_EN_SHIFT
 	s_and_b32	ttmp2, ttmp2, ttmp3
 	s_cbranch_scc1	L_FETCH_2ND_TRAP
-#else
-	s_getreg_b32	ttmp2, hwreg(HW_REG_WAVE_EXCP_FLAG_USER)
-	s_and_b32	ttmp3, s_save_trapsts, SQ_WAVE_EXCP_FLAG_PRIV_ADDR_WATCH_MASK
-	s_cbranch_scc0	L_NOT_ADDR_WATCH
-	s_or_b32	ttmp2, ttmp2, SQ_WAVE_TRAP_CTRL_ADDR_WATCH_MASK
-
-L_NOT_ADDR_WATCH:
-	s_getreg_b32	ttmp3, hwreg(HW_REG_WAVE_TRAP_CTRL)
-	s_and_b32	ttmp2, ttmp3, ttmp2
-	s_cbranch_scc1	L_FETCH_2ND_TRAP
-#endif
 
 L_CHECK_TRAP_ID:
 	// Check trap_id != 0
@@ -369,13 +287,8 @@ L_CHECK_TRAP_ID:
 #if SINGLE_STEP_MISSED_WORKAROUND
 	// Prioritize single step exception over context save.
 	// Second-level trap will halt wave and RFE, re-entering for SAVECTX.
-#if ASIC_FAMILY < CHIP_GFX12
 	s_getreg_b32	ttmp2, hwreg(HW_REG_MODE)
 	s_and_b32	ttmp2, ttmp2, SQ_WAVE_MODE_DEBUG_EN_MASK
-#else
-	// WAVE_TRAP_CTRL is already in ttmp3.
-	s_and_b32	ttmp3, ttmp3, SQ_WAVE_TRAP_CTRL_TRAP_AFTER_INST_MASK
-#endif
 	s_cbranch_scc1	L_FETCH_2ND_TRAP
 #endif
 
@@ -425,12 +338,7 @@ L_NO_NEXT_TRAP:
 	s_cbranch_scc1	L_TRAP_CASE
 
 	// Host trap will not cause trap re-entry.
-#if ASIC_FAMILY < CHIP_GFX12
 	s_and_b32	ttmp2, s_save_pc_hi, S_SAVE_PC_HI_HT_MASK
-#else
-	s_getreg_b32	ttmp2, hwreg(HW_REG_WAVE_EXCP_FLAG_PRIV)
-	s_and_b32	ttmp2, ttmp2, SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_MASK
-#endif
 	s_cbranch_scc1	L_EXIT_TRAP
 	s_or_b32	s_save_status, s_save_status, S_STATUS_HALT_MASK
 
@@ -457,16 +365,7 @@ L_EXIT_TRAP:
 	s_and_b64	exec, exec, exec					// Restore STATUS.EXECZ, not writable by s_setreg_b32
 	s_and_b64	vcc, vcc, vcc						// Restore STATUS.VCCZ, not writable by s_setreg_b32
 
-#if ASIC_FAMILY < CHIP_GFX12
 	s_setreg_b32	hwreg(S_STATUS_HWREG), s_save_status
-#else
-	// STATE_PRIV.BARRIER_COMPLETE may have changed since we read it.
-	// Only restore fields which the trap handler changes.
-	s_lshr_b32	s_save_status, s_save_status, SQ_WAVE_STATE_PRIV_SCC_SHIFT
-	s_setreg_b32	hwreg(S_STATUS_HWREG, SQ_WAVE_STATE_PRIV_SCC_SHIFT, \
-		SQ_WAVE_STATE_PRIV_POISON_ERR_SHIFT - SQ_WAVE_STATE_PRIV_SCC_SHIFT + 1), s_save_status
-#endif
-
 	s_rfe_b64	[ttmp0, ttmp1]
 
 L_SAVE:
@@ -478,14 +377,6 @@ L_SAVE:
 	s_endpgm
 L_HAVE_VGPRS:
 #endif
-#if ASIC_FAMILY >= CHIP_GFX12
-	s_getreg_b32	s_save_tmp, hwreg(HW_REG_WAVE_STATUS)
-	s_bitcmp1_b32	s_save_tmp, SQ_WAVE_STATUS_NO_VGPRS_SHIFT
-	s_cbranch_scc0	L_HAVE_VGPRS
-	s_endpgm
-L_HAVE_VGPRS:
-#endif
-
 	s_and_b32	s_save_pc_hi, s_save_pc_hi, 0x0000ffff			//pc[47:32]
 	s_mov_b32	s_save_tmp, 0
 	s_setreg_b32	hwreg(S_TRAPSTS_HWREG, S_TRAPSTS_SAVE_CONTEXT_SHIFT, 1), s_save_tmp	//clear saveCtx bit
@@ -671,19 +562,6 @@ L_SAVE_HWREG:
 	s_mov_b32	m0, 0x0							//Next lane of v2 to write to
 #endif
 
-#if ASIC_FAMILY >= CHIP_GFX12
-	// Ensure no further changes to barrier or LDS state.
-	// STATE_PRIV.BARRIER_COMPLETE may change up to this point.
-	s_barrier_signal	-2
-	s_barrier_wait	-2
-
-	// Re-read final state of BARRIER_COMPLETE field for save.
-	s_getreg_b32	s_save_tmp, hwreg(S_STATUS_HWREG)
-	s_and_b32	s_save_tmp, s_save_tmp, SQ_WAVE_STATE_PRIV_BARRIER_COMPLETE_MASK
-	s_andn2_b32	s_save_status, s_save_status, SQ_WAVE_STATE_PRIV_BARRIER_COMPLETE_MASK
-	s_or_b32	s_save_status, s_save_status, s_save_tmp
-#endif
-
 	write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset)
 	write_hwreg_to_mem(s_save_pc_lo, s_save_buf_rsrc0, s_save_mem_offset)
 	s_andn2_b32	s_save_tmp, s_save_pc_hi, S_SAVE_PC_HI_FIRST_WAVE_MASK
@@ -707,21 +585,6 @@ L_SAVE_HWREG:
 	s_getreg_b32	s_save_m0, hwreg(HW_REG_SHADER_FLAT_SCRATCH_HI)
 	write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset)
 
-#if ASIC_FAMILY >= CHIP_GFX12
-	s_getreg_b32	s_save_m0, hwreg(HW_REG_WAVE_EXCP_FLAG_USER)
-	write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset)
-
-	s_getreg_b32	s_save_m0, hwreg(HW_REG_WAVE_TRAP_CTRL)
-	write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset)
-
-	s_getreg_b32	s_save_tmp, hwreg(HW_REG_WAVE_STATUS)
-	write_hwreg_to_mem(s_save_tmp, s_save_buf_rsrc0, s_save_mem_offset)
-
-	s_get_barrier_state s_save_tmp, -1
-	s_wait_kmcnt (0)
-	write_hwreg_to_mem(s_save_tmp, s_save_buf_rsrc0, s_save_mem_offset)
-#endif
-
 #if NO_SQC_STORE
 	// Write HWREGs with 16 VGPR lanes. TTMPs occupy space after this.
 	s_mov_b32       exec_lo, 0xFFFF
@@ -814,9 +677,7 @@ L_SAVE_LDS_NORMAL:
 	s_and_b32	s_save_alloc_size, s_save_alloc_size, 0xFFFFFFFF	//lds_size is zero?
 	s_cbranch_scc0	L_SAVE_LDS_DONE						//no lds used? jump to L_SAVE_DONE
 
-#if ASIC_FAMILY < CHIP_GFX12
 	s_barrier								//LDS is used? wait for other waves in the same TG
-#endif
 	s_and_b32	s_save_tmp, s_save_pc_hi, S_SAVE_PC_HI_FIRST_WAVE_MASK
 	s_cbranch_scc0	L_SAVE_LDS_DONE
 
@@ -1081,11 +942,6 @@ L_RESTORE:
 	s_mov_b32	s_restore_buf_rsrc2, 0					//NUM_RECORDS initial value = 0 (in bytes)
 	s_mov_b32	s_restore_buf_rsrc3, S_RESTORE_BUF_RSRC_WORD3_MISC
 
-#if ASIC_FAMILY >= CHIP_GFX12
-	// Save s_restore_spi_init_hi for later use.
-	s_mov_b32 s_restore_spi_init_hi_save, s_restore_spi_init_hi
-#endif
-
 	//determine it is wave32 or wave64
 	get_wave_size2(s_restore_size)
 
@@ -1320,9 +1176,7 @@ L_RESTORE_SGPR:
 	// s_barrier with MODE.DEBUG_EN=1, STATUS.PRIV=1 incorrectly asserts debug exception.
 	// Clear DEBUG_EN before and restore MODE after the barrier.
 	s_setreg_imm32_b32	hwreg(HW_REG_MODE), 0
-#if ASIC_FAMILY < CHIP_GFX12
 	s_barrier								//barrier to ensure the readiness of LDS before access attemps from any other wave in the same TG
-#endif
 
 	/* restore HW registers */
 L_RESTORE_HWREG:
@@ -1334,11 +1188,6 @@ L_RESTORE_HWREG:
 
 	s_mov_b32	s_restore_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
 
-#if ASIC_FAMILY >= CHIP_GFX12
-	// Restore s_restore_spi_init_hi before the saved value gets clobbered.
-	s_mov_b32 s_restore_spi_init_hi, s_restore_spi_init_hi_save
-#endif
-
 	read_hwreg_from_mem(s_restore_m0, s_restore_buf_rsrc0, s_restore_mem_offset)
 	read_hwreg_from_mem(s_restore_pc_lo, s_restore_buf_rsrc0, s_restore_mem_offset)
 	read_hwreg_from_mem(s_restore_pc_hi, s_restore_buf_rsrc0, s_restore_mem_offset)
@@ -1358,44 +1207,6 @@ L_RESTORE_HWREG:
 
 	s_setreg_b32	hwreg(HW_REG_SHADER_FLAT_SCRATCH_HI), s_restore_flat_scratch
 
-#if ASIC_FAMILY >= CHIP_GFX12
-	read_hwreg_from_mem(s_restore_tmp, s_restore_buf_rsrc0, s_restore_mem_offset)
-	S_WAITCNT_0
-	s_setreg_b32	hwreg(HW_REG_WAVE_EXCP_FLAG_USER), s_restore_tmp
-
-	read_hwreg_from_mem(s_restore_tmp, s_restore_buf_rsrc0, s_restore_mem_offset)
-	S_WAITCNT_0
-	s_setreg_b32	hwreg(HW_REG_WAVE_TRAP_CTRL), s_restore_tmp
-
-	// Only the first wave needs to restore the workgroup barrier.
-	s_and_b32	s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_FIRST_WAVE_MASK
-	s_cbranch_scc0	L_SKIP_BARRIER_RESTORE
-
-	// Skip over WAVE_STATUS, since there is no state to restore from it
-	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, 4
-
-	read_hwreg_from_mem(s_restore_tmp, s_restore_buf_rsrc0, s_restore_mem_offset)
-	S_WAITCNT_0
-
-	s_bitcmp1_b32	s_restore_tmp, BARRIER_STATE_VALID_OFFSET
-	s_cbranch_scc0	L_SKIP_BARRIER_RESTORE
-
-	// extract the saved signal count from s_restore_tmp
-	s_lshr_b32	s_restore_tmp, s_restore_tmp, BARRIER_STATE_SIGNAL_OFFSET
-
-	// We need to call s_barrier_signal repeatedly to restore the signal
-	// count of the work group barrier.  The member count is already
-	// initialized with the number of waves in the work group.
-L_BARRIER_RESTORE_LOOP:
-	s_and_b32	s_restore_tmp, s_restore_tmp, s_restore_tmp
-	s_cbranch_scc0	L_SKIP_BARRIER_RESTORE
-	s_barrier_signal	-1
-	s_add_i32	s_restore_tmp, s_restore_tmp, -1
-	s_branch	L_BARRIER_RESTORE_LOOP
-
-L_SKIP_BARRIER_RESTORE:
-#endif
-
 	s_mov_b32	m0, s_restore_m0
 	s_mov_b32	exec_lo, s_restore_exec_lo
 	s_mov_b32	exec_hi, s_restore_exec_hi
@@ -1453,13 +1264,6 @@ L_RETURN_WITHOUT_PRIV:
 
 	s_setreg_b32	hwreg(S_STATUS_HWREG), s_restore_status			// SCC is included, which is changed by previous salu
 
-#if ASIC_FAMILY >= CHIP_GFX12
-	// Make barrier and LDS state visible to all waves in the group.
-	// STATE_PRIV.BARRIER_COMPLETE may change after this point.
-	s_barrier_signal	-2
-	s_barrier_wait	-2
-#endif
-
 	s_rfe_b64	s_restore_pc_lo						//Return to the main shader program and resume execution
 
 L_END_PGM:
@@ -1598,11 +1402,7 @@ function get_hwreg_size_bytes
 end
 
 function get_wave_size2(s_reg)
-#if ASIC_FAMILY < CHIP_GFX12
 	s_getreg_b32	s_reg, hwreg(HW_REG_IB_STS2,SQ_WAVE_IB_STS2_WAVE64_SHIFT,SQ_WAVE_IB_STS2_WAVE64_SIZE)
-#else
-	s_getreg_b32	s_reg, hwreg(HW_REG_WAVE_STATUS,SQ_WAVE_STATUS_WAVE64_SHIFT,SQ_WAVE_STATUS_WAVE64_SIZE)
-#endif
 	s_lshl_b32	s_reg, s_reg, S_WAVE_SIZE
 end
 
diff --git a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx12.asm b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx12.asm
new file mode 100644
index 0000000000000..1740e98c6719d
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx12.asm
@@ -0,0 +1,1126 @@
+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/* To compile this assembly code:
+ *
+ * gfx12:
+ *   cpp -DASIC_FAMILY=CHIP_GFX12 cwsr_trap_handler_gfx12.asm -P -o gfx12.sp3
+ *   sp3 gfx12.sp3 -hex gfx12.hex
+ */
+
+#define CHIP_GFX12 37
+
+#define SINGLE_STEP_MISSED_WORKAROUND 1	//workaround for lost TRAP_AFTER_INST exception when SAVECTX raised
+
+var SQ_WAVE_STATE_PRIV_BARRIER_COMPLETE_MASK	= 0x4
+var SQ_WAVE_STATE_PRIV_SCC_SHIFT		= 9
+var SQ_WAVE_STATE_PRIV_SYS_PRIO_MASK		= 0xC00
+var SQ_WAVE_STATE_PRIV_HALT_MASK		= 0x4000
+var SQ_WAVE_STATE_PRIV_POISON_ERR_MASK		= 0x8000
+var SQ_WAVE_STATE_PRIV_POISON_ERR_SHIFT		= 15
+var SQ_WAVE_STATUS_WAVE64_SHIFT			= 29
+var SQ_WAVE_STATUS_WAVE64_SIZE			= 1
+var SQ_WAVE_STATUS_NO_VGPRS_SHIFT		= 24
+var SQ_WAVE_STATE_PRIV_ALWAYS_CLEAR_MASK	= SQ_WAVE_STATE_PRIV_SYS_PRIO_MASK|SQ_WAVE_STATE_PRIV_POISON_ERR_MASK
+var S_SAVE_PC_HI_TRAP_ID_MASK			= 0xF0000000
+
+var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT		= 12
+var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE		= 9
+var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE		= 8
+var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT		= 12
+var SQ_WAVE_LDS_ALLOC_VGPR_SHARED_SIZE_SHIFT	= 24
+var SQ_WAVE_LDS_ALLOC_VGPR_SHARED_SIZE_SIZE	= 4
+var SQ_WAVE_LDS_ALLOC_GRANULARITY		= 9
+
+var SQ_WAVE_EXCP_FLAG_PRIV_ADDR_WATCH_MASK	= 0xF
+var SQ_WAVE_EXCP_FLAG_PRIV_MEM_VIOL_MASK	= 0x10
+var SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_SHIFT	= 5
+var SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_MASK	= 0x20
+var SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_MASK	= 0x40
+var SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_SHIFT	= 6
+var SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_MASK	= 0x80
+var SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_SHIFT	= 7
+var SQ_WAVE_EXCP_FLAG_PRIV_WAVE_START_MASK	= 0x100
+var SQ_WAVE_EXCP_FLAG_PRIV_WAVE_START_SHIFT	= 8
+var SQ_WAVE_EXCP_FLAG_PRIV_WAVE_END_MASK	= 0x200
+var SQ_WAVE_EXCP_FLAG_PRIV_TRAP_AFTER_INST_MASK	= 0x800
+var SQ_WAVE_TRAP_CTRL_ADDR_WATCH_MASK		= 0x80
+var SQ_WAVE_TRAP_CTRL_TRAP_AFTER_INST_MASK	= 0x200
+
+var SQ_WAVE_EXCP_FLAG_PRIV_NON_MASKABLE_EXCP_MASK= SQ_WAVE_EXCP_FLAG_PRIV_MEM_VIOL_MASK		|\
+						  SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_MASK	|\
+						  SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_MASK		|\
+						  SQ_WAVE_EXCP_FLAG_PRIV_WAVE_START_MASK	|\
+						  SQ_WAVE_EXCP_FLAG_PRIV_WAVE_END_MASK		|\
+						  SQ_WAVE_EXCP_FLAG_PRIV_TRAP_AFTER_INST_MASK
+var SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_1_SIZE	= SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_SHIFT
+var SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_2_SHIFT	= SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_SHIFT
+var SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_2_SIZE	= SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_SHIFT - SQ_WAVE_EXCP_FLAG_PRIV_ILLEGAL_INST_SHIFT
+var SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_3_SHIFT	= SQ_WAVE_EXCP_FLAG_PRIV_WAVE_START_SHIFT
+var SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_3_SIZE	= 32 - SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_3_SHIFT
+var BARRIER_STATE_SIGNAL_OFFSET			= 16
+var BARRIER_STATE_VALID_OFFSET			= 0
+
+var TTMP11_DEBUG_TRAP_ENABLED_SHIFT		= 23
+var TTMP11_DEBUG_TRAP_ENABLED_MASK		= 0x800000
+
+// SQ_SEL_X/Y/Z/W, BUF_NUM_FORMAT_FLOAT, (0 for MUBUF stride[17:14]
+// when ADD_TID_ENABLE and BUF_DATA_FORMAT_32 for MTBUF), ADD_TID_ENABLE
+var S_SAVE_BUF_RSRC_WORD1_STRIDE		= 0x00040000
+var S_SAVE_BUF_RSRC_WORD3_MISC			= 0x10807FAC
+var S_SAVE_SPI_INIT_FIRST_WAVE_MASK		= 0x04000000
+var S_SAVE_SPI_INIT_FIRST_WAVE_SHIFT		= 26
+
+var S_SAVE_PC_HI_FIRST_WAVE_MASK		= 0x80000000
+var S_SAVE_PC_HI_FIRST_WAVE_SHIFT		= 31
+
+var s_sgpr_save_num				= 108
+
+var s_save_spi_init_lo				= exec_lo
+var s_save_spi_init_hi				= exec_hi
+var s_save_pc_lo				= ttmp0
+var s_save_pc_hi				= ttmp1
+var s_save_exec_lo				= ttmp2
+var s_save_exec_hi				= ttmp3
+var s_save_state_priv				= ttmp12
+var s_save_excp_flag_priv			= ttmp15
+var s_save_xnack_mask				= s_save_excp_flag_priv
+var s_wave_size					= ttmp7
+var s_save_buf_rsrc0				= ttmp8
+var s_save_buf_rsrc1				= ttmp9
+var s_save_buf_rsrc2				= ttmp10
+var s_save_buf_rsrc3				= ttmp11
+var s_save_mem_offset				= ttmp4
+var s_save_alloc_size				= s_save_excp_flag_priv
+var s_save_tmp					= ttmp14
+var s_save_m0					= ttmp5
+var s_save_ttmps_lo				= s_save_tmp
+var s_save_ttmps_hi				= s_save_excp_flag_priv
+
+var S_RESTORE_BUF_RSRC_WORD1_STRIDE		= S_SAVE_BUF_RSRC_WORD1_STRIDE
+var S_RESTORE_BUF_RSRC_WORD3_MISC		= S_SAVE_BUF_RSRC_WORD3_MISC
+
+var S_RESTORE_SPI_INIT_FIRST_WAVE_MASK		= 0x04000000
+var S_RESTORE_SPI_INIT_FIRST_WAVE_SHIFT		= 26
+var S_WAVE_SIZE					= 25
+
+var s_restore_spi_init_lo			= exec_lo
+var s_restore_spi_init_hi			= exec_hi
+var s_restore_mem_offset			= ttmp12
+var s_restore_alloc_size			= ttmp3
+var s_restore_tmp				= ttmp2
+var s_restore_mem_offset_save			= s_restore_tmp
+var s_restore_m0				= s_restore_alloc_size
+var s_restore_mode				= ttmp7
+var s_restore_flat_scratch			= s_restore_tmp
+var s_restore_pc_lo				= ttmp0
+var s_restore_pc_hi				= ttmp1
+var s_restore_exec_lo				= ttmp4
+var s_restore_exec_hi				= ttmp5
+var s_restore_state_priv			= ttmp14
+var s_restore_excp_flag_priv			= ttmp15
+var s_restore_xnack_mask			= ttmp13
+var s_restore_buf_rsrc0				= ttmp8
+var s_restore_buf_rsrc1				= ttmp9
+var s_restore_buf_rsrc2				= ttmp10
+var s_restore_buf_rsrc3				= ttmp11
+var s_restore_size				= ttmp6
+var s_restore_ttmps_lo				= s_restore_tmp
+var s_restore_ttmps_hi				= s_restore_alloc_size
+var s_restore_spi_init_hi_save			= s_restore_exec_hi
+
+shader main
+	asic(DEFAULT)
+	type(CS)
+	wave_size(32)
+
+	s_branch	L_SKIP_RESTORE						//NOT restore. might be a regular trap or save
+
+L_JUMP_TO_RESTORE:
+	s_branch	L_RESTORE
+
+L_SKIP_RESTORE:
+	s_getreg_b32	s_save_state_priv, hwreg(HW_REG_WAVE_STATE_PRIV)	//save STATUS since we will change SCC
+
+	// Clear SPI_PRIO: do not save with elevated priority.
+	// Clear ECC_ERR: prevents SQC store and triggers FATAL_HALT if setreg'd.
+	s_andn2_b32	s_save_state_priv, s_save_state_priv, SQ_WAVE_STATE_PRIV_ALWAYS_CLEAR_MASK
+
+	s_getreg_b32	s_save_excp_flag_priv, hwreg(HW_REG_WAVE_EXCP_FLAG_PRIV)
+
+	s_and_b32       ttmp2, s_save_state_priv, SQ_WAVE_STATE_PRIV_HALT_MASK
+	s_cbranch_scc0	L_NOT_HALTED
+
+L_HALTED:
+	// Host trap may occur while wave is halted.
+	s_and_b32	ttmp2, s_save_excp_flag_priv, SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_MASK
+	s_cbranch_scc1	L_FETCH_2ND_TRAP
+
+L_CHECK_SAVE:
+	s_and_b32	ttmp2, s_save_excp_flag_priv, SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_MASK
+	s_cbranch_scc1	L_SAVE
+
+	// Wave is halted but neither host trap nor SAVECTX is raised.
+	// Caused by instruction fetch memory violation.
+	// Spin wait until context saved to prevent interrupt storm.
+	s_sleep		0x10
+	s_getreg_b32	s_save_excp_flag_priv, hwreg(HW_REG_WAVE_EXCP_FLAG_PRIV)
+	s_branch	L_CHECK_SAVE
+
+L_NOT_HALTED:
+	// Let second-level handle non-SAVECTX exception or trap.
+	// Any concurrent SAVECTX will be handled upon re-entry once halted.
+
+	// Check non-maskable exceptions. memory_violation, illegal_instruction
+	// and xnack_error exceptions always cause the wave to enter the trap
+	// handler.
+	s_and_b32	ttmp2, s_save_excp_flag_priv, SQ_WAVE_EXCP_FLAG_PRIV_NON_MASKABLE_EXCP_MASK
+	s_cbranch_scc1	L_FETCH_2ND_TRAP
+
+	// Check for maskable exceptions in trapsts.excp and trapsts.excp_hi.
+	// Maskable exceptions only cause the wave to enter the trap handler if
+	// their respective bit in mode.excp_en is set.
+	s_getreg_b32	ttmp2, hwreg(HW_REG_WAVE_EXCP_FLAG_USER)
+	s_and_b32	ttmp3, s_save_excp_flag_priv, SQ_WAVE_EXCP_FLAG_PRIV_ADDR_WATCH_MASK
+	s_cbranch_scc0	L_NOT_ADDR_WATCH
+	s_or_b32	ttmp2, ttmp2, SQ_WAVE_TRAP_CTRL_ADDR_WATCH_MASK
+
+L_NOT_ADDR_WATCH:
+	s_getreg_b32	ttmp3, hwreg(HW_REG_WAVE_TRAP_CTRL)
+	s_and_b32	ttmp2, ttmp3, ttmp2
+	s_cbranch_scc1	L_FETCH_2ND_TRAP
+
+L_CHECK_TRAP_ID:
+	// Check trap_id != 0
+	s_and_b32	ttmp2, s_save_pc_hi, S_SAVE_PC_HI_TRAP_ID_MASK
+	s_cbranch_scc1	L_FETCH_2ND_TRAP
+
+#if SINGLE_STEP_MISSED_WORKAROUND
+	// Prioritize single step exception over context save.
+	// Second-level trap will halt wave and RFE, re-entering for SAVECTX.
+	// WAVE_TRAP_CTRL is already in ttmp3.
+	s_and_b32	ttmp3, ttmp3, SQ_WAVE_TRAP_CTRL_TRAP_AFTER_INST_MASK
+	s_cbranch_scc1	L_FETCH_2ND_TRAP
+#endif
+
+	s_and_b32	ttmp2, s_save_excp_flag_priv, SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_MASK
+	s_cbranch_scc1	L_SAVE
+
+L_FETCH_2ND_TRAP:
+	// Read second-level TBA/TMA from first-level TMA and jump if available.
+	// ttmp[2:5] and ttmp12 can be used (others hold SPI-initialized debug data)
+	// ttmp12 holds SQ_WAVE_STATUS
+	s_sendmsg_rtn_b64       [ttmp14, ttmp15], sendmsg(MSG_RTN_GET_TMA)
+	s_wait_idle
+	s_lshl_b64	[ttmp14, ttmp15], [ttmp14, ttmp15], 0x8
+
+	s_bitcmp1_b32	ttmp15, 0xF
+	s_cbranch_scc0	L_NO_SIGN_EXTEND_TMA
+	s_or_b32	ttmp15, ttmp15, 0xFFFF0000
+L_NO_SIGN_EXTEND_TMA:
+
+	s_load_dword    ttmp2, [ttmp14, ttmp15], 0x10 scope:SCOPE_SYS		// debug trap enabled flag
+	s_wait_idle
+	s_lshl_b32      ttmp2, ttmp2, TTMP11_DEBUG_TRAP_ENABLED_SHIFT
+	s_andn2_b32     ttmp11, ttmp11, TTMP11_DEBUG_TRAP_ENABLED_MASK
+	s_or_b32        ttmp11, ttmp11, ttmp2
+
+	s_load_dwordx2	[ttmp2, ttmp3], [ttmp14, ttmp15], 0x0 scope:SCOPE_SYS	// second-level TBA
+	s_wait_idle
+	s_load_dwordx2	[ttmp14, ttmp15], [ttmp14, ttmp15], 0x8 scope:SCOPE_SYS	// second-level TMA
+	s_wait_idle
+
+	s_and_b64	[ttmp2, ttmp3], [ttmp2, ttmp3], [ttmp2, ttmp3]
+	s_cbranch_scc0	L_NO_NEXT_TRAP						// second-level trap handler not been set
+	s_setpc_b64	[ttmp2, ttmp3]						// jump to second-level trap handler
+
+L_NO_NEXT_TRAP:
+	// If not caused by trap then halt wave to prevent re-entry.
+	s_and_b32	ttmp2, s_save_pc_hi, S_SAVE_PC_HI_TRAP_ID_MASK
+	s_cbranch_scc1	L_TRAP_CASE
+
+	// Host trap will not cause trap re-entry.
+	s_getreg_b32	ttmp2, hwreg(HW_REG_WAVE_EXCP_FLAG_PRIV)
+	s_and_b32	ttmp2, ttmp2, SQ_WAVE_EXCP_FLAG_PRIV_HOST_TRAP_MASK
+	s_cbranch_scc1	L_EXIT_TRAP
+	s_or_b32	s_save_state_priv, s_save_state_priv, SQ_WAVE_STATE_PRIV_HALT_MASK
+
+	// If the PC points to S_ENDPGM then context save will fail if STATE_PRIV.HALT is set.
+	// Rewind the PC to prevent this from occurring.
+	s_sub_u32	ttmp0, ttmp0, 0x8
+	s_subb_u32	ttmp1, ttmp1, 0x0
+
+	s_branch	L_EXIT_TRAP
+
+L_TRAP_CASE:
+	// Advance past trap instruction to prevent re-entry.
+	s_add_u32	ttmp0, ttmp0, 0x4
+	s_addc_u32	ttmp1, ttmp1, 0x0
+
+L_EXIT_TRAP:
+	s_and_b32	ttmp1, ttmp1, 0xFFFF
+
+	// Restore SQ_WAVE_STATUS.
+	s_and_b64	exec, exec, exec					// Restore STATUS.EXECZ, not writable by s_setreg_b32
+	s_and_b64	vcc, vcc, vcc						// Restore STATUS.VCCZ, not writable by s_setreg_b32
+
+	// STATE_PRIV.BARRIER_COMPLETE may have changed since we read it.
+	// Only restore fields which the trap handler changes.
+	s_lshr_b32	s_save_state_priv, s_save_state_priv, SQ_WAVE_STATE_PRIV_SCC_SHIFT
+	s_setreg_b32	hwreg(HW_REG_WAVE_STATE_PRIV, SQ_WAVE_STATE_PRIV_SCC_SHIFT, \
+		SQ_WAVE_STATE_PRIV_POISON_ERR_SHIFT - SQ_WAVE_STATE_PRIV_SCC_SHIFT + 1), s_save_state_priv
+
+	s_rfe_b64	[ttmp0, ttmp1]
+
+L_SAVE:
+	// If VGPRs have been deallocated then terminate the wavefront.
+	// It has no remaining program to run and cannot save without VGPRs.
+	s_getreg_b32	s_save_tmp, hwreg(HW_REG_WAVE_STATUS)
+	s_bitcmp1_b32	s_save_tmp, SQ_WAVE_STATUS_NO_VGPRS_SHIFT
+	s_cbranch_scc0	L_HAVE_VGPRS
+	s_endpgm
+L_HAVE_VGPRS:
+
+	s_and_b32	s_save_pc_hi, s_save_pc_hi, 0x0000ffff			//pc[47:32]
+	s_mov_b32	s_save_tmp, 0
+	s_setreg_b32	hwreg(HW_REG_WAVE_EXCP_FLAG_PRIV, SQ_WAVE_EXCP_FLAG_PRIV_SAVE_CONTEXT_SHIFT, 1), s_save_tmp	//clear saveCtx bit
+
+	/* inform SPI the readiness and wait for SPI's go signal */
+	s_mov_b32	s_save_exec_lo, exec_lo					//save EXEC and use EXEC for the go signal from SPI
+	s_mov_b32	s_save_exec_hi, exec_hi
+	s_mov_b64	exec, 0x0						//clear EXEC to get ready to receive
+
+	s_sendmsg_rtn_b64       [exec_lo, exec_hi], sendmsg(MSG_RTN_SAVE_WAVE)
+	s_wait_idle
+
+	// Save first_wave flag so we can clear high bits of save address.
+	s_and_b32	s_save_tmp, s_save_spi_init_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK
+	s_lshl_b32	s_save_tmp, s_save_tmp, (S_SAVE_PC_HI_FIRST_WAVE_SHIFT - S_SAVE_SPI_INIT_FIRST_WAVE_SHIFT)
+	s_or_b32	s_save_pc_hi, s_save_pc_hi, s_save_tmp
+
+	// Trap temporaries must be saved via VGPR but all VGPRs are in use.
+	// There is no ttmp space to hold the resource constant for VGPR save.
+	// Save v0 by itself since it requires only two SGPRs.
+	s_mov_b32	s_save_ttmps_lo, exec_lo
+	s_and_b32	s_save_ttmps_hi, exec_hi, 0xFFFF
+	s_mov_b32	exec_lo, 0xFFFFFFFF
+	s_mov_b32	exec_hi, 0xFFFFFFFF
+	global_store_dword_addtid	v0, [s_save_ttmps_lo, s_save_ttmps_hi] scope:SCOPE_SYS
+	v_mov_b32	v0, 0x0
+	s_mov_b32	exec_lo, s_save_ttmps_lo
+	s_mov_b32	exec_hi, s_save_ttmps_hi
+
+	// Save trap temporaries 4-11, 13 initialized by SPI debug dispatch logic
+	// ttmp SR memory offset : size(VGPR)+size(SVGPR)+size(SGPR)+0x40
+	get_wave_size2(s_save_ttmps_hi)
+	get_vgpr_size_bytes(s_save_ttmps_lo, s_save_ttmps_hi)
+	get_svgpr_size_bytes(s_save_ttmps_hi)
+	s_add_u32	s_save_ttmps_lo, s_save_ttmps_lo, s_save_ttmps_hi
+	s_and_b32	s_save_ttmps_hi, s_save_spi_init_hi, 0xFFFF
+	s_add_u32	s_save_ttmps_lo, s_save_ttmps_lo, get_sgpr_size_bytes()
+	s_add_u32	s_save_ttmps_lo, s_save_ttmps_lo, s_save_spi_init_lo
+	s_addc_u32	s_save_ttmps_hi, s_save_ttmps_hi, 0x0
+
+	v_writelane_b32	v0, ttmp4, 0x4
+	v_writelane_b32	v0, ttmp5, 0x5
+	v_writelane_b32	v0, ttmp6, 0x6
+	v_writelane_b32	v0, ttmp7, 0x7
+	v_writelane_b32	v0, ttmp8, 0x8
+	v_writelane_b32	v0, ttmp9, 0x9
+	v_writelane_b32	v0, ttmp10, 0xA
+	v_writelane_b32	v0, ttmp11, 0xB
+	v_writelane_b32	v0, ttmp13, 0xD
+	v_writelane_b32	v0, exec_lo, 0xE
+	v_writelane_b32	v0, exec_hi, 0xF
+
+	s_mov_b32	exec_lo, 0x3FFF
+	s_mov_b32	exec_hi, 0x0
+	global_store_dword_addtid	v0, [s_save_ttmps_lo, s_save_ttmps_hi] offset:0x40 scope:SCOPE_SYS
+	v_readlane_b32	ttmp14, v0, 0xE
+	v_readlane_b32	ttmp15, v0, 0xF
+	s_mov_b32	exec_lo, ttmp14
+	s_mov_b32	exec_hi, ttmp15
+
+	/* setup Resource Contants */
+	s_mov_b32	s_save_buf_rsrc0, s_save_spi_init_lo			//base_addr_lo
+	s_and_b32	s_save_buf_rsrc1, s_save_spi_init_hi, 0x0000FFFF	//base_addr_hi
+	s_or_b32	s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE
+	s_mov_b32	s_save_buf_rsrc2, 0					//NUM_RECORDS initial value = 0 (in bytes) although not neccessarily inited
+	s_mov_b32	s_save_buf_rsrc3, S_SAVE_BUF_RSRC_WORD3_MISC
+
+	s_mov_b32	s_save_m0, m0
+
+	/* global mem offset */
+	s_mov_b32	s_save_mem_offset, 0x0
+	get_wave_size2(s_wave_size)
+
+	/* save first 4 VGPRs, needed for SGPR save */
+	s_mov_b32	exec_lo, 0xFFFFFFFF					//need every thread from now on
+	s_lshr_b32	m0, s_wave_size, S_WAVE_SIZE
+	s_and_b32	m0, m0, 1
+	s_cmp_eq_u32	m0, 1
+	s_cbranch_scc1	L_ENABLE_SAVE_4VGPR_EXEC_HI
+	s_mov_b32	exec_hi, 0x00000000
+	s_branch	L_SAVE_4VGPR_WAVE32
+L_ENABLE_SAVE_4VGPR_EXEC_HI:
+	s_mov_b32	exec_hi, 0xFFFFFFFF
+	s_branch	L_SAVE_4VGPR_WAVE64
+L_SAVE_4VGPR_WAVE32:
+	s_mov_b32	s_save_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	// VGPR Allocated in 4-GPR granularity
+
+	buffer_store_dword	v1, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:128
+	buffer_store_dword	v2, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:128*2
+	buffer_store_dword	v3, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:128*3
+	s_branch	L_SAVE_HWREG
+
+L_SAVE_4VGPR_WAVE64:
+	s_mov_b32	s_save_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	// VGPR Allocated in 4-GPR granularity
+
+	buffer_store_dword	v1, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:256
+	buffer_store_dword	v2, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:256*2
+	buffer_store_dword	v3, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:256*3
+
+	/* save HW registers */
+
+L_SAVE_HWREG:
+	// HWREG SR memory offset : size(VGPR)+size(SVGPR)+size(SGPR)
+	get_vgpr_size_bytes(s_save_mem_offset, s_wave_size)
+	get_svgpr_size_bytes(s_save_tmp)
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, s_save_tmp
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, get_sgpr_size_bytes()
+
+	s_mov_b32	s_save_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	v_mov_b32	v0, 0x0							//Offset[31:0] from buffer resource
+	v_mov_b32	v1, 0x0							//Offset[63:32] from buffer resource
+	v_mov_b32	v2, 0x0							//Set of SGPRs for TCP store
+	s_mov_b32	m0, 0x0							//Next lane of v2 to write to
+
+	// Ensure no further changes to barrier or LDS state.
+	// STATE_PRIV.BARRIER_COMPLETE may change up to this point.
+	s_barrier_signal	-2
+	s_barrier_wait	-2
+
+	// Re-read final state of BARRIER_COMPLETE field for save.
+	s_getreg_b32	s_save_tmp, hwreg(HW_REG_WAVE_STATE_PRIV)
+	s_and_b32	s_save_tmp, s_save_tmp, SQ_WAVE_STATE_PRIV_BARRIER_COMPLETE_MASK
+	s_andn2_b32	s_save_state_priv, s_save_state_priv, SQ_WAVE_STATE_PRIV_BARRIER_COMPLETE_MASK
+	s_or_b32	s_save_state_priv, s_save_state_priv, s_save_tmp
+
+	write_hwreg_to_v2(s_save_m0)
+	write_hwreg_to_v2(s_save_pc_lo)
+	s_andn2_b32	s_save_tmp, s_save_pc_hi, S_SAVE_PC_HI_FIRST_WAVE_MASK
+	write_hwreg_to_v2(s_save_tmp)
+	write_hwreg_to_v2(s_save_exec_lo)
+	write_hwreg_to_v2(s_save_exec_hi)
+	write_hwreg_to_v2(s_save_state_priv)
+
+	s_getreg_b32	s_save_tmp, hwreg(HW_REG_WAVE_EXCP_FLAG_PRIV)
+	write_hwreg_to_v2(s_save_tmp)
+
+	write_hwreg_to_v2(s_save_xnack_mask)
+
+	s_getreg_b32	s_save_m0, hwreg(HW_REG_WAVE_MODE)
+	write_hwreg_to_v2(s_save_m0)
+
+	s_getreg_b32	s_save_m0, hwreg(HW_REG_WAVE_SCRATCH_BASE_LO)
+	write_hwreg_to_v2(s_save_m0)
+
+	s_getreg_b32	s_save_m0, hwreg(HW_REG_WAVE_SCRATCH_BASE_HI)
+	write_hwreg_to_v2(s_save_m0)
+
+	s_getreg_b32	s_save_m0, hwreg(HW_REG_WAVE_EXCP_FLAG_USER)
+	write_hwreg_to_v2(s_save_m0)
+
+	s_getreg_b32	s_save_m0, hwreg(HW_REG_WAVE_TRAP_CTRL)
+	write_hwreg_to_v2(s_save_m0)
+
+	s_getreg_b32	s_save_tmp, hwreg(HW_REG_WAVE_STATUS)
+	write_hwreg_to_v2(s_save_tmp)
+
+	s_get_barrier_state s_save_tmp, -1
+	s_wait_kmcnt (0)
+	write_hwreg_to_v2(s_save_tmp)
+
+	// Write HWREGs with 16 VGPR lanes. TTMPs occupy space after this.
+	s_mov_b32       exec_lo, 0xFFFF
+	s_mov_b32	exec_hi, 0x0
+	buffer_store_dword	v2, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS
+
+	// Write SGPRs with 32 VGPR lanes. This works in wave32 and wave64 mode.
+	s_mov_b32       exec_lo, 0xFFFFFFFF
+
+	/* save SGPRs */
+	// Save SGPR before LDS save, then the s0 to s4 can be used during LDS save...
+
+	// SGPR SR memory offset : size(VGPR)+size(SVGPR)
+	get_vgpr_size_bytes(s_save_mem_offset, s_wave_size)
+	get_svgpr_size_bytes(s_save_tmp)
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, s_save_tmp
+	s_mov_b32	s_save_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	s_mov_b32	ttmp13, 0x0						//next VGPR lane to copy SGPR into
+
+	s_mov_b32	m0, 0x0							//SGPR initial index value =0
+	s_nop		0x0							//Manually inserted wait states
+L_SAVE_SGPR_LOOP:
+	// SGPR is allocated in 16 SGPR granularity
+	s_movrels_b64	s0, s0							//s0 = s[0+m0], s1 = s[1+m0]
+	s_movrels_b64	s2, s2							//s2 = s[2+m0], s3 = s[3+m0]
+	s_movrels_b64	s4, s4							//s4 = s[4+m0], s5 = s[5+m0]
+	s_movrels_b64	s6, s6							//s6 = s[6+m0], s7 = s[7+m0]
+	s_movrels_b64	s8, s8							//s8 = s[8+m0], s9 = s[9+m0]
+	s_movrels_b64	s10, s10						//s10 = s[10+m0], s11 = s[11+m0]
+	s_movrels_b64	s12, s12						//s12 = s[12+m0], s13 = s[13+m0]
+	s_movrels_b64	s14, s14						//s14 = s[14+m0], s15 = s[15+m0]
+
+	write_16sgpr_to_v2(s0)
+
+	s_cmp_eq_u32	ttmp13, 0x20						//have 32 VGPR lanes filled?
+	s_cbranch_scc0	L_SAVE_SGPR_SKIP_TCP_STORE
+
+	buffer_store_dword	v2, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, 0x80
+	s_mov_b32	ttmp13, 0x0
+	v_mov_b32	v2, 0x0
+L_SAVE_SGPR_SKIP_TCP_STORE:
+
+	s_add_u32	m0, m0, 16						//next sgpr index
+	s_cmp_lt_u32	m0, 96							//scc = (m0 < first 96 SGPR) ? 1 : 0
+	s_cbranch_scc1	L_SAVE_SGPR_LOOP					//first 96 SGPR save is complete?
+
+	//save the rest 12 SGPR
+	s_movrels_b64	s0, s0							//s0 = s[0+m0], s1 = s[1+m0]
+	s_movrels_b64	s2, s2							//s2 = s[2+m0], s3 = s[3+m0]
+	s_movrels_b64	s4, s4							//s4 = s[4+m0], s5 = s[5+m0]
+	s_movrels_b64	s6, s6							//s6 = s[6+m0], s7 = s[7+m0]
+	s_movrels_b64	s8, s8							//s8 = s[8+m0], s9 = s[9+m0]
+	s_movrels_b64	s10, s10						//s10 = s[10+m0], s11 = s[11+m0]
+	write_12sgpr_to_v2(s0)
+
+	buffer_store_dword	v2, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS
+
+	/* save LDS */
+
+L_SAVE_LDS:
+	// Change EXEC to all threads...
+	s_mov_b32	exec_lo, 0xFFFFFFFF					//need every thread from now on
+	s_lshr_b32	m0, s_wave_size, S_WAVE_SIZE
+	s_and_b32	m0, m0, 1
+	s_cmp_eq_u32	m0, 1
+	s_cbranch_scc1	L_ENABLE_SAVE_LDS_EXEC_HI
+	s_mov_b32	exec_hi, 0x00000000
+	s_branch	L_SAVE_LDS_NORMAL
+L_ENABLE_SAVE_LDS_EXEC_HI:
+	s_mov_b32	exec_hi, 0xFFFFFFFF
+L_SAVE_LDS_NORMAL:
+	s_getreg_b32	s_save_alloc_size, hwreg(HW_REG_WAVE_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE)
+	s_and_b32	s_save_alloc_size, s_save_alloc_size, 0xFFFFFFFF	//lds_size is zero?
+	s_cbranch_scc0	L_SAVE_LDS_DONE						//no lds used? jump to L_SAVE_DONE
+
+	s_and_b32	s_save_tmp, s_save_pc_hi, S_SAVE_PC_HI_FIRST_WAVE_MASK
+	s_cbranch_scc0	L_SAVE_LDS_DONE
+
+	// first wave do LDS save;
+
+	s_lshl_b32	s_save_alloc_size, s_save_alloc_size, SQ_WAVE_LDS_ALLOC_GRANULARITY
+	s_mov_b32	s_save_buf_rsrc2, s_save_alloc_size			//NUM_RECORDS in bytes
+
+	// LDS at offset: size(VGPR)+size(SVGPR)+SIZE(SGPR)+SIZE(HWREG)
+	//
+	get_vgpr_size_bytes(s_save_mem_offset, s_wave_size)
+	get_svgpr_size_bytes(s_save_tmp)
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, s_save_tmp
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, get_sgpr_size_bytes()
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, get_hwreg_size_bytes()
+
+	s_mov_b32	s_save_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	//load 0~63*4(byte address) to vgpr v0
+	v_mbcnt_lo_u32_b32	v0, -1, 0
+	v_mbcnt_hi_u32_b32	v0, -1, v0
+	v_mul_u32_u24	v0, 4, v0
+
+	s_lshr_b32	m0, s_wave_size, S_WAVE_SIZE
+	s_and_b32	m0, m0, 1
+	s_cmp_eq_u32	m0, 1
+	s_mov_b32	m0, 0x0
+	s_cbranch_scc1	L_SAVE_LDS_W64
+
+L_SAVE_LDS_W32:
+	s_mov_b32	s3, 128
+	s_nop		0
+	s_nop		0
+	s_nop		0
+L_SAVE_LDS_LOOP_W32:
+	ds_read_b32	v1, v0
+	s_wait_idle
+	buffer_store_dword	v1, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS
+
+	s_add_u32	m0, m0, s3						//every buffer_store_lds does 128 bytes
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, s3
+	v_add_nc_u32	v0, v0, 128						//mem offset increased by 128 bytes
+	s_cmp_lt_u32	m0, s_save_alloc_size					//scc=(m0 < s_save_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_SAVE_LDS_LOOP_W32					//LDS save is complete?
+
+	s_branch	L_SAVE_LDS_DONE
+
+L_SAVE_LDS_W64:
+	s_mov_b32	s3, 256
+	s_nop		0
+	s_nop		0
+	s_nop		0
+L_SAVE_LDS_LOOP_W64:
+	ds_read_b32	v1, v0
+	s_wait_idle
+	buffer_store_dword	v1, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS
+
+	s_add_u32	m0, m0, s3						//every buffer_store_lds does 256 bytes
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, s3
+	v_add_nc_u32	v0, v0, 256						//mem offset increased by 256 bytes
+	s_cmp_lt_u32	m0, s_save_alloc_size					//scc=(m0 < s_save_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_SAVE_LDS_LOOP_W64					//LDS save is complete?
+
+L_SAVE_LDS_DONE:
+	/* save VGPRs  - set the Rest VGPRs */
+L_SAVE_VGPR:
+	// VGPR SR memory offset: 0
+	s_mov_b32	exec_lo, 0xFFFFFFFF					//need every thread from now on
+	s_lshr_b32	m0, s_wave_size, S_WAVE_SIZE
+	s_and_b32	m0, m0, 1
+	s_cmp_eq_u32	m0, 1
+	s_cbranch_scc1	L_ENABLE_SAVE_VGPR_EXEC_HI
+	s_mov_b32	s_save_mem_offset, (0+128*4)				// for the rest VGPRs
+	s_mov_b32	exec_hi, 0x00000000
+	s_branch	L_SAVE_VGPR_NORMAL
+L_ENABLE_SAVE_VGPR_EXEC_HI:
+	s_mov_b32	s_save_mem_offset, (0+256*4)				// for the rest VGPRs
+	s_mov_b32	exec_hi, 0xFFFFFFFF
+L_SAVE_VGPR_NORMAL:
+	s_getreg_b32	s_save_alloc_size, hwreg(HW_REG_WAVE_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE)
+	s_add_u32	s_save_alloc_size, s_save_alloc_size, 1
+	s_lshl_b32	s_save_alloc_size, s_save_alloc_size, 2			//Number of VGPRs = (vgpr_size + 1) * 4    (non-zero value)
+	//determine it is wave32 or wave64
+	s_lshr_b32	m0, s_wave_size, S_WAVE_SIZE
+	s_and_b32	m0, m0, 1
+	s_cmp_eq_u32	m0, 1
+	s_cbranch_scc1	L_SAVE_VGPR_WAVE64
+
+	s_mov_b32	s_save_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	// VGPR Allocated in 4-GPR granularity
+
+	// VGPR store using dw burst
+	s_mov_b32	m0, 0x4							//VGPR initial index value =4
+	s_cmp_lt_u32	m0, s_save_alloc_size
+	s_cbranch_scc0	L_SAVE_VGPR_END
+
+L_SAVE_VGPR_W32_LOOP:
+	v_movrels_b32	v0, v0							//v0 = v[0+m0]
+	v_movrels_b32	v1, v1							//v1 = v[1+m0]
+	v_movrels_b32	v2, v2							//v2 = v[2+m0]
+	v_movrels_b32	v3, v3							//v3 = v[3+m0]
+
+	buffer_store_dword	v0, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS
+	buffer_store_dword	v1, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:128
+	buffer_store_dword	v2, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:128*2
+	buffer_store_dword	v3, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:128*3
+
+	s_add_u32	m0, m0, 4						//next vgpr index
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, 128*4		//every buffer_store_dword does 128 bytes
+	s_cmp_lt_u32	m0, s_save_alloc_size					//scc = (m0 < s_save_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_SAVE_VGPR_W32_LOOP					//VGPR save is complete?
+
+	s_branch	L_SAVE_VGPR_END
+
+L_SAVE_VGPR_WAVE64:
+	s_mov_b32	s_save_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	// VGPR store using dw burst
+	s_mov_b32	m0, 0x4							//VGPR initial index value =4
+	s_cmp_lt_u32	m0, s_save_alloc_size
+	s_cbranch_scc0	L_SAVE_SHARED_VGPR
+
+L_SAVE_VGPR_W64_LOOP:
+	v_movrels_b32	v0, v0							//v0 = v[0+m0]
+	v_movrels_b32	v1, v1							//v1 = v[1+m0]
+	v_movrels_b32	v2, v2							//v2 = v[2+m0]
+	v_movrels_b32	v3, v3							//v3 = v[3+m0]
+
+	buffer_store_dword	v0, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS
+	buffer_store_dword	v1, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:256
+	buffer_store_dword	v2, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:256*2
+	buffer_store_dword	v3, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS offset:256*3
+
+	s_add_u32	m0, m0, 4						//next vgpr index
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, 256*4		//every buffer_store_dword does 256 bytes
+	s_cmp_lt_u32	m0, s_save_alloc_size					//scc = (m0 < s_save_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_SAVE_VGPR_W64_LOOP					//VGPR save is complete?
+
+L_SAVE_SHARED_VGPR:
+	s_getreg_b32	s_save_alloc_size, hwreg(HW_REG_WAVE_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_VGPR_SHARED_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_VGPR_SHARED_SIZE_SIZE)
+	s_and_b32	s_save_alloc_size, s_save_alloc_size, 0xFFFFFFFF	//shared_vgpr_size is zero?
+	s_cbranch_scc0	L_SAVE_VGPR_END						//no shared_vgpr used? jump to L_SAVE_LDS
+	s_lshl_b32	s_save_alloc_size, s_save_alloc_size, 3			//Number of SHARED_VGPRs = shared_vgpr_size * 8    (non-zero value)
+	//m0 now has the value of normal vgpr count, just add the m0 with shared_vgpr count to get the total count.
+	//save shared_vgpr will start from the index of m0
+	s_add_u32	s_save_alloc_size, s_save_alloc_size, m0
+	s_mov_b32	exec_lo, 0xFFFFFFFF
+	s_mov_b32	exec_hi, 0x00000000
+
+L_SAVE_SHARED_VGPR_WAVE64_LOOP:
+	v_movrels_b32	v0, v0							//v0 = v[0+m0]
+	buffer_store_dword	v0, v0, s_save_buf_rsrc0, s_save_mem_offset scope:SCOPE_SYS
+	s_add_u32	m0, m0, 1						//next vgpr index
+	s_add_u32	s_save_mem_offset, s_save_mem_offset, 128
+	s_cmp_lt_u32	m0, s_save_alloc_size					//scc = (m0 < s_save_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_SAVE_SHARED_VGPR_WAVE64_LOOP				//SHARED_VGPR save is complete?
+
+L_SAVE_VGPR_END:
+	s_branch	L_END_PGM
+
+L_RESTORE:
+	/* Setup Resource Contants */
+	s_mov_b32	s_restore_buf_rsrc0, s_restore_spi_init_lo		//base_addr_lo
+	s_and_b32	s_restore_buf_rsrc1, s_restore_spi_init_hi, 0x0000FFFF	//base_addr_hi
+	s_or_b32	s_restore_buf_rsrc1, s_restore_buf_rsrc1, S_RESTORE_BUF_RSRC_WORD1_STRIDE
+	s_mov_b32	s_restore_buf_rsrc2, 0					//NUM_RECORDS initial value = 0 (in bytes)
+	s_mov_b32	s_restore_buf_rsrc3, S_RESTORE_BUF_RSRC_WORD3_MISC
+
+	// Save s_restore_spi_init_hi for later use.
+	s_mov_b32 s_restore_spi_init_hi_save, s_restore_spi_init_hi
+
+	//determine it is wave32 or wave64
+	get_wave_size2(s_restore_size)
+
+	s_and_b32	s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_FIRST_WAVE_MASK
+	s_cbranch_scc0	L_RESTORE_VGPR
+
+	/* restore LDS */
+L_RESTORE_LDS:
+	s_mov_b32	exec_lo, 0xFFFFFFFF					//need every thread from now on
+	s_lshr_b32	m0, s_restore_size, S_WAVE_SIZE
+	s_and_b32	m0, m0, 1
+	s_cmp_eq_u32	m0, 1
+	s_cbranch_scc1	L_ENABLE_RESTORE_LDS_EXEC_HI
+	s_mov_b32	exec_hi, 0x00000000
+	s_branch	L_RESTORE_LDS_NORMAL
+L_ENABLE_RESTORE_LDS_EXEC_HI:
+	s_mov_b32	exec_hi, 0xFFFFFFFF
+L_RESTORE_LDS_NORMAL:
+	s_getreg_b32	s_restore_alloc_size, hwreg(HW_REG_WAVE_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE)
+	s_and_b32	s_restore_alloc_size, s_restore_alloc_size, 0xFFFFFFFF	//lds_size is zero?
+	s_cbranch_scc0	L_RESTORE_VGPR						//no lds used? jump to L_RESTORE_VGPR
+	s_lshl_b32	s_restore_alloc_size, s_restore_alloc_size, SQ_WAVE_LDS_ALLOC_GRANULARITY
+	s_mov_b32	s_restore_buf_rsrc2, s_restore_alloc_size		//NUM_RECORDS in bytes
+
+	// LDS at offset: size(VGPR)+size(SVGPR)+SIZE(SGPR)+SIZE(HWREG)
+	//
+	get_vgpr_size_bytes(s_restore_mem_offset, s_restore_size)
+	get_svgpr_size_bytes(s_restore_tmp)
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, get_sgpr_size_bytes()
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, get_hwreg_size_bytes()
+
+	s_mov_b32	s_restore_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	s_lshr_b32	m0, s_restore_size, S_WAVE_SIZE
+	s_and_b32	m0, m0, 1
+	s_cmp_eq_u32	m0, 1
+	s_mov_b32	m0, 0x0
+	s_cbranch_scc1	L_RESTORE_LDS_LOOP_W64
+
+L_RESTORE_LDS_LOOP_W32:
+	buffer_load_dword       v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset
+	s_wait_idle
+	ds_store_addtid_b32     v0
+	s_add_u32	m0, m0, 128						// 128 DW
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, 128		//mem offset increased by 128DW
+	s_cmp_lt_u32	m0, s_restore_alloc_size				//scc=(m0 < s_restore_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_RESTORE_LDS_LOOP_W32					//LDS restore is complete?
+	s_branch	L_RESTORE_VGPR
+
+L_RESTORE_LDS_LOOP_W64:
+	buffer_load_dword       v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset
+	s_wait_idle
+	ds_store_addtid_b32     v0
+	s_add_u32	m0, m0, 256						// 256 DW
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, 256		//mem offset increased by 256DW
+	s_cmp_lt_u32	m0, s_restore_alloc_size				//scc=(m0 < s_restore_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_RESTORE_LDS_LOOP_W64					//LDS restore is complete?
+
+	/* restore VGPRs */
+L_RESTORE_VGPR:
+	// VGPR SR memory offset : 0
+	s_mov_b32	s_restore_mem_offset, 0x0
+	s_mov_b32	exec_lo, 0xFFFFFFFF					//need every thread from now on
+	s_lshr_b32	m0, s_restore_size, S_WAVE_SIZE
+	s_and_b32	m0, m0, 1
+	s_cmp_eq_u32	m0, 1
+	s_cbranch_scc1	L_ENABLE_RESTORE_VGPR_EXEC_HI
+	s_mov_b32	exec_hi, 0x00000000
+	s_branch	L_RESTORE_VGPR_NORMAL
+L_ENABLE_RESTORE_VGPR_EXEC_HI:
+	s_mov_b32	exec_hi, 0xFFFFFFFF
+L_RESTORE_VGPR_NORMAL:
+	s_getreg_b32	s_restore_alloc_size, hwreg(HW_REG_WAVE_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE)
+	s_add_u32	s_restore_alloc_size, s_restore_alloc_size, 1
+	s_lshl_b32	s_restore_alloc_size, s_restore_alloc_size, 2		//Number of VGPRs = (vgpr_size + 1) * 4    (non-zero value)
+	//determine it is wave32 or wave64
+	s_lshr_b32	m0, s_restore_size, S_WAVE_SIZE
+	s_and_b32	m0, m0, 1
+	s_cmp_eq_u32	m0, 1
+	s_cbranch_scc1	L_RESTORE_VGPR_WAVE64
+
+	s_mov_b32	s_restore_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	// VGPR load using dw burst
+	s_mov_b32	s_restore_mem_offset_save, s_restore_mem_offset		// restore start with v1, v0 will be the last
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, 128*4
+	s_mov_b32	m0, 4							//VGPR initial index value = 4
+	s_cmp_lt_u32	m0, s_restore_alloc_size
+	s_cbranch_scc0	L_RESTORE_SGPR
+
+L_RESTORE_VGPR_WAVE32_LOOP:
+	buffer_load_dword	v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset scope:SCOPE_SYS
+	buffer_load_dword	v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset scope:SCOPE_SYS offset:128
+	buffer_load_dword	v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset scope:SCOPE_SYS offset:128*2
+	buffer_load_dword	v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset scope:SCOPE_SYS offset:128*3
+	s_wait_idle
+	v_movreld_b32	v0, v0							//v[0+m0] = v0
+	v_movreld_b32	v1, v1
+	v_movreld_b32	v2, v2
+	v_movreld_b32	v3, v3
+	s_add_u32	m0, m0, 4						//next vgpr index
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, 128*4	//every buffer_load_dword does 128 bytes
+	s_cmp_lt_u32	m0, s_restore_alloc_size				//scc = (m0 < s_restore_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_RESTORE_VGPR_WAVE32_LOOP				//VGPR restore (except v0) is complete?
+
+	/* VGPR restore on v0 */
+	buffer_load_dword	v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save scope:SCOPE_SYS
+	buffer_load_dword	v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save scope:SCOPE_SYS offset:128
+	buffer_load_dword	v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save scope:SCOPE_SYS offset:128*2
+	buffer_load_dword	v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save scope:SCOPE_SYS offset:128*3
+	s_wait_idle
+
+	s_branch	L_RESTORE_SGPR
+
+L_RESTORE_VGPR_WAVE64:
+	s_mov_b32	s_restore_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	// VGPR load using dw burst
+	s_mov_b32	s_restore_mem_offset_save, s_restore_mem_offset		// restore start with v4, v0 will be the last
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, 256*4
+	s_mov_b32	m0, 4							//VGPR initial index value = 4
+	s_cmp_lt_u32	m0, s_restore_alloc_size
+	s_cbranch_scc0	L_RESTORE_SHARED_VGPR
+
+L_RESTORE_VGPR_WAVE64_LOOP:
+	buffer_load_dword	v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset scope:SCOPE_SYS
+	buffer_load_dword	v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset scope:SCOPE_SYS offset:256
+	buffer_load_dword	v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset scope:SCOPE_SYS offset:256*2
+	buffer_load_dword	v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset scope:SCOPE_SYS offset:256*3
+	s_wait_idle
+	v_movreld_b32	v0, v0							//v[0+m0] = v0
+	v_movreld_b32	v1, v1
+	v_movreld_b32	v2, v2
+	v_movreld_b32	v3, v3
+	s_add_u32	m0, m0, 4						//next vgpr index
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, 256*4	//every buffer_load_dword does 256 bytes
+	s_cmp_lt_u32	m0, s_restore_alloc_size				//scc = (m0 < s_restore_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_RESTORE_VGPR_WAVE64_LOOP				//VGPR restore (except v0) is complete?
+
+L_RESTORE_SHARED_VGPR:
+	s_getreg_b32	s_restore_alloc_size, hwreg(HW_REG_WAVE_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_VGPR_SHARED_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_VGPR_SHARED_SIZE_SIZE)	//shared_vgpr_size
+	s_and_b32	s_restore_alloc_size, s_restore_alloc_size, 0xFFFFFFFF	//shared_vgpr_size is zero?
+	s_cbranch_scc0	L_RESTORE_V0						//no shared_vgpr used?
+	s_lshl_b32	s_restore_alloc_size, s_restore_alloc_size, 3		//Number of SHARED_VGPRs = shared_vgpr_size * 8    (non-zero value)
+	//m0 now has the value of normal vgpr count, just add the m0 with shared_vgpr count to get the total count.
+	//restore shared_vgpr will start from the index of m0
+	s_add_u32	s_restore_alloc_size, s_restore_alloc_size, m0
+	s_mov_b32	exec_lo, 0xFFFFFFFF
+	s_mov_b32	exec_hi, 0x00000000
+L_RESTORE_SHARED_VGPR_WAVE64_LOOP:
+	buffer_load_dword	v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset scope:SCOPE_SYS
+	s_wait_idle
+	v_movreld_b32	v0, v0							//v[0+m0] = v0
+	s_add_u32	m0, m0, 1						//next vgpr index
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, 128
+	s_cmp_lt_u32	m0, s_restore_alloc_size				//scc = (m0 < s_restore_alloc_size) ? 1 : 0
+	s_cbranch_scc1	L_RESTORE_SHARED_VGPR_WAVE64_LOOP			//VGPR restore (except v0) is complete?
+
+	s_mov_b32	exec_hi, 0xFFFFFFFF					//restore back exec_hi before restoring V0!!
+
+	/* VGPR restore on v0 */
+L_RESTORE_V0:
+	buffer_load_dword	v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save scope:SCOPE_SYS
+	buffer_load_dword	v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save scope:SCOPE_SYS offset:256
+	buffer_load_dword	v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save scope:SCOPE_SYS offset:256*2
+	buffer_load_dword	v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save scope:SCOPE_SYS offset:256*3
+	s_wait_idle
+
+	/* restore SGPRs */
+	//will be 2+8+16*6
+	// SGPR SR memory offset : size(VGPR)+size(SVGPR)
+L_RESTORE_SGPR:
+	get_vgpr_size_bytes(s_restore_mem_offset, s_restore_size)
+	get_svgpr_size_bytes(s_restore_tmp)
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, get_sgpr_size_bytes()
+	s_sub_u32	s_restore_mem_offset, s_restore_mem_offset, 20*4	//s108~s127 is not saved
+
+	s_mov_b32	s_restore_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	s_mov_b32	m0, s_sgpr_save_num
+
+	read_4sgpr_from_mem(s0, s_restore_buf_rsrc0, s_restore_mem_offset)
+	s_wait_idle
+
+	s_sub_u32	m0, m0, 4						// Restore from S[0] to S[104]
+	s_nop		0							// hazard SALU M0=> S_MOVREL
+
+	s_movreld_b64	s0, s0							//s[0+m0] = s0
+	s_movreld_b64	s2, s2
+
+	read_8sgpr_from_mem(s0, s_restore_buf_rsrc0, s_restore_mem_offset)
+	s_wait_idle
+
+	s_sub_u32	m0, m0, 8						// Restore from S[0] to S[96]
+	s_nop		0							// hazard SALU M0=> S_MOVREL
+
+	s_movreld_b64	s0, s0							//s[0+m0] = s0
+	s_movreld_b64	s2, s2
+	s_movreld_b64	s4, s4
+	s_movreld_b64	s6, s6
+
+ L_RESTORE_SGPR_LOOP:
+	read_16sgpr_from_mem(s0, s_restore_buf_rsrc0, s_restore_mem_offset)
+	s_wait_idle
+
+	s_sub_u32	m0, m0, 16						// Restore from S[n] to S[0]
+	s_nop		0							// hazard SALU M0=> S_MOVREL
+
+	s_movreld_b64	s0, s0							//s[0+m0] = s0
+	s_movreld_b64	s2, s2
+	s_movreld_b64	s4, s4
+	s_movreld_b64	s6, s6
+	s_movreld_b64	s8, s8
+	s_movreld_b64	s10, s10
+	s_movreld_b64	s12, s12
+	s_movreld_b64	s14, s14
+
+	s_cmp_eq_u32	m0, 0							//scc = (m0 < s_sgpr_save_num) ? 1 : 0
+	s_cbranch_scc0	L_RESTORE_SGPR_LOOP
+
+	// s_barrier with STATE_PRIV.TRAP_AFTER_INST=1, STATUS.PRIV=1 incorrectly asserts debug exception.
+	// Clear DEBUG_EN before and restore MODE after the barrier.
+	s_setreg_imm32_b32	hwreg(HW_REG_WAVE_MODE), 0
+
+	/* restore HW registers */
+L_RESTORE_HWREG:
+	// HWREG SR memory offset : size(VGPR)+size(SVGPR)+size(SGPR)
+	get_vgpr_size_bytes(s_restore_mem_offset, s_restore_size)
+	get_svgpr_size_bytes(s_restore_tmp)
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, get_sgpr_size_bytes()
+
+	s_mov_b32	s_restore_buf_rsrc2, 0x1000000				//NUM_RECORDS in bytes
+
+	// Restore s_restore_spi_init_hi before the saved value gets clobbered.
+	s_mov_b32 s_restore_spi_init_hi, s_restore_spi_init_hi_save
+
+	read_hwreg_from_mem(s_restore_m0, s_restore_buf_rsrc0, s_restore_mem_offset)
+	read_hwreg_from_mem(s_restore_pc_lo, s_restore_buf_rsrc0, s_restore_mem_offset)
+	read_hwreg_from_mem(s_restore_pc_hi, s_restore_buf_rsrc0, s_restore_mem_offset)
+	read_hwreg_from_mem(s_restore_exec_lo, s_restore_buf_rsrc0, s_restore_mem_offset)
+	read_hwreg_from_mem(s_restore_exec_hi, s_restore_buf_rsrc0, s_restore_mem_offset)
+	read_hwreg_from_mem(s_restore_state_priv, s_restore_buf_rsrc0, s_restore_mem_offset)
+	read_hwreg_from_mem(s_restore_excp_flag_priv, s_restore_buf_rsrc0, s_restore_mem_offset)
+	read_hwreg_from_mem(s_restore_xnack_mask, s_restore_buf_rsrc0, s_restore_mem_offset)
+	read_hwreg_from_mem(s_restore_mode, s_restore_buf_rsrc0, s_restore_mem_offset)
+	read_hwreg_from_mem(s_restore_flat_scratch, s_restore_buf_rsrc0, s_restore_mem_offset)
+	s_wait_idle
+
+	s_setreg_b32	hwreg(HW_REG_WAVE_SCRATCH_BASE_LO), s_restore_flat_scratch
+
+	read_hwreg_from_mem(s_restore_flat_scratch, s_restore_buf_rsrc0, s_restore_mem_offset)
+	s_wait_idle
+
+	s_setreg_b32	hwreg(HW_REG_WAVE_SCRATCH_BASE_HI), s_restore_flat_scratch
+
+	read_hwreg_from_mem(s_restore_tmp, s_restore_buf_rsrc0, s_restore_mem_offset)
+	s_wait_idle
+	s_setreg_b32	hwreg(HW_REG_WAVE_EXCP_FLAG_USER), s_restore_tmp
+
+	read_hwreg_from_mem(s_restore_tmp, s_restore_buf_rsrc0, s_restore_mem_offset)
+	s_wait_idle
+	s_setreg_b32	hwreg(HW_REG_WAVE_TRAP_CTRL), s_restore_tmp
+
+	// Only the first wave needs to restore the workgroup barrier.
+	s_and_b32	s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_FIRST_WAVE_MASK
+	s_cbranch_scc0	L_SKIP_BARRIER_RESTORE
+
+	// Skip over WAVE_STATUS, since there is no state to restore from it
+	s_add_u32	s_restore_mem_offset, s_restore_mem_offset, 4
+
+	read_hwreg_from_mem(s_restore_tmp, s_restore_buf_rsrc0, s_restore_mem_offset)
+	s_wait_idle
+
+	s_bitcmp1_b32	s_restore_tmp, BARRIER_STATE_VALID_OFFSET
+	s_cbranch_scc0	L_SKIP_BARRIER_RESTORE
+
+	// extract the saved signal count from s_restore_tmp
+	s_lshr_b32	s_restore_tmp, s_restore_tmp, BARRIER_STATE_SIGNAL_OFFSET
+
+	// We need to call s_barrier_signal repeatedly to restore the signal
+	// count of the work group barrier.  The member count is already
+	// initialized with the number of waves in the work group.
+L_BARRIER_RESTORE_LOOP:
+	s_and_b32	s_restore_tmp, s_restore_tmp, s_restore_tmp
+	s_cbranch_scc0	L_SKIP_BARRIER_RESTORE
+	s_barrier_signal	-1
+	s_add_i32	s_restore_tmp, s_restore_tmp, -1
+	s_branch	L_BARRIER_RESTORE_LOOP
+
+L_SKIP_BARRIER_RESTORE:
+
+	s_mov_b32	m0, s_restore_m0
+	s_mov_b32	exec_lo, s_restore_exec_lo
+	s_mov_b32	exec_hi, s_restore_exec_hi
+
+	// EXCP_FLAG_PRIV.SAVE_CONTEXT and HOST_TRAP may have changed.
+	// Only restore the other fields to avoid clobbering them.
+	s_setreg_b32	hwreg(HW_REG_WAVE_EXCP_FLAG_PRIV, 0, SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_1_SIZE), s_restore_excp_flag_priv
+	s_lshr_b32	s_restore_excp_flag_priv, s_restore_excp_flag_priv, SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_2_SHIFT
+	s_setreg_b32	hwreg(HW_REG_WAVE_EXCP_FLAG_PRIV, SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_2_SHIFT, SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_2_SIZE), s_restore_excp_flag_priv
+	s_lshr_b32	s_restore_excp_flag_priv, s_restore_excp_flag_priv, SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_3_SHIFT - SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_2_SHIFT
+	s_setreg_b32	hwreg(HW_REG_WAVE_EXCP_FLAG_PRIV, SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_3_SHIFT, SQ_WAVE_EXCP_FLAG_PRIV_RESTORE_PART_3_SIZE), s_restore_excp_flag_priv
+
+	s_setreg_b32	hwreg(HW_REG_WAVE_MODE), s_restore_mode
+
+	// Restore trap temporaries 4-11, 13 initialized by SPI debug dispatch logic
+	// ttmp SR memory offset : size(VGPR)+size(SVGPR)+size(SGPR)+0x40
+	get_vgpr_size_bytes(s_restore_ttmps_lo, s_restore_size)
+	get_svgpr_size_bytes(s_restore_ttmps_hi)
+	s_add_u32	s_restore_ttmps_lo, s_restore_ttmps_lo, s_restore_ttmps_hi
+	s_add_u32	s_restore_ttmps_lo, s_restore_ttmps_lo, get_sgpr_size_bytes()
+	s_add_u32	s_restore_ttmps_lo, s_restore_ttmps_lo, s_restore_buf_rsrc0
+	s_addc_u32	s_restore_ttmps_hi, s_restore_buf_rsrc1, 0x0
+	s_and_b32	s_restore_ttmps_hi, s_restore_ttmps_hi, 0xFFFF
+	s_load_dwordx4	[ttmp4, ttmp5, ttmp6, ttmp7], [s_restore_ttmps_lo, s_restore_ttmps_hi], 0x50 scope:SCOPE_SYS
+	s_load_dwordx4	[ttmp8, ttmp9, ttmp10, ttmp11], [s_restore_ttmps_lo, s_restore_ttmps_hi], 0x60 scope:SCOPE_SYS
+	s_load_dword	ttmp13, [s_restore_ttmps_lo, s_restore_ttmps_hi], 0x74 scope:SCOPE_SYS
+	s_wait_idle
+
+	s_and_b32	s_restore_pc_hi, s_restore_pc_hi, 0x0000ffff		//pc[47:32] //Do it here in order not to affect STATUS
+	s_and_b64	exec, exec, exec					// Restore STATUS.EXECZ, not writable by s_setreg_b32
+	s_and_b64	vcc, vcc, vcc						// Restore STATUS.VCCZ, not writable by s_setreg_b32
+
+	s_setreg_b32	hwreg(HW_REG_WAVE_STATE_PRIV), s_restore_state_priv	// SCC is included, which is changed by previous salu
+
+	// Make barrier and LDS state visible to all waves in the group.
+	// STATE_PRIV.BARRIER_COMPLETE may change after this point.
+	s_barrier_signal	-2
+	s_barrier_wait	-2
+
+	s_rfe_b64	s_restore_pc_lo						//Return to the main shader program and resume execution
+
+L_END_PGM:
+	s_endpgm_saved
+end
+
+function write_hwreg_to_v2(s)
+	// Copy into VGPR for later TCP store.
+	v_writelane_b32	v2, s, m0
+	s_add_u32	m0, m0, 0x1
+end
+
+
+function write_16sgpr_to_v2(s)
+	// Copy into VGPR for later TCP store.
+	for var sgpr_idx = 0; sgpr_idx < 16; sgpr_idx ++
+		v_writelane_b32	v2, s[sgpr_idx], ttmp13
+		s_add_u32	ttmp13, ttmp13, 0x1
+	end
+end
+
+function write_12sgpr_to_v2(s)
+	// Copy into VGPR for later TCP store.
+	for var sgpr_idx = 0; sgpr_idx < 12; sgpr_idx ++
+		v_writelane_b32	v2, s[sgpr_idx], ttmp13
+		s_add_u32	ttmp13, ttmp13, 0x1
+	end
+end
+
+function read_hwreg_from_mem(s, s_rsrc, s_mem_offset)
+	s_buffer_load_dword	s, s_rsrc, s_mem_offset scope:SCOPE_SYS
+	s_add_u32	s_mem_offset, s_mem_offset, 4
+end
+
+function read_16sgpr_from_mem(s, s_rsrc, s_mem_offset)
+	s_sub_u32	s_mem_offset, s_mem_offset, 4*16
+	s_buffer_load_dwordx16	s, s_rsrc, s_mem_offset scope:SCOPE_SYS
+end
+
+function read_8sgpr_from_mem(s, s_rsrc, s_mem_offset)
+	s_sub_u32	s_mem_offset, s_mem_offset, 4*8
+	s_buffer_load_dwordx8	s, s_rsrc, s_mem_offset scope:SCOPE_SYS
+end
+
+function read_4sgpr_from_mem(s, s_rsrc, s_mem_offset)
+	s_sub_u32	s_mem_offset, s_mem_offset, 4*4
+	s_buffer_load_dwordx4	s, s_rsrc, s_mem_offset scope:SCOPE_SYS
+end
+
+function get_vgpr_size_bytes(s_vgpr_size_byte, s_size)
+	s_getreg_b32	s_vgpr_size_byte, hwreg(HW_REG_WAVE_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE)
+	s_add_u32	s_vgpr_size_byte, s_vgpr_size_byte, 1
+	s_bitcmp1_b32	s_size, S_WAVE_SIZE
+	s_cbranch_scc1	L_ENABLE_SHIFT_W64
+	s_lshl_b32	s_vgpr_size_byte, s_vgpr_size_byte, (2+7)		//Number of VGPRs = (vgpr_size + 1) * 4 * 32 * 4   (non-zero value)
+	s_branch	L_SHIFT_DONE
+L_ENABLE_SHIFT_W64:
+	s_lshl_b32	s_vgpr_size_byte, s_vgpr_size_byte, (2+8)		//Number of VGPRs = (vgpr_size + 1) * 4 * 64 * 4   (non-zero value)
+L_SHIFT_DONE:
+end
+
+function get_svgpr_size_bytes(s_svgpr_size_byte)
+	s_getreg_b32	s_svgpr_size_byte, hwreg(HW_REG_WAVE_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_VGPR_SHARED_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_VGPR_SHARED_SIZE_SIZE)
+	s_lshl_b32	s_svgpr_size_byte, s_svgpr_size_byte, (3+7)
+end
+
+function get_sgpr_size_bytes
+	return 512
+end
+
+function get_hwreg_size_bytes
+	return 128
+end
+
+function get_wave_size2(s_reg)
+	s_getreg_b32	s_reg, hwreg(HW_REG_WAVE_STATUS,SQ_WAVE_STATUS_WAVE64_SHIFT,SQ_WAVE_STATUS_WAVE64_SIZE)
+	s_lshl_b32	s_reg, s_reg, S_WAVE_SIZE
+end
-- 
2.39.5