Infineon TriCore TC1.6P - RET - Return from Call

TriCore
®
TC1.6P & TC1.6E
32-bit Unified Processor Core
Instruction Set
V1.0 2013-07
User Manual (Volume 2) 3-314
RET
Return from Call
Description
Return from a function that was invoked with a CALL instruction. The return address is in register A[11] (return
address). The caller’s upper context register values are restored as part of the return operation.
RET(SR)
RET(SYS)
if (PSW.CDE) then if (cdc_decrement()) then trap(CDU);
if (PCXI[19:0] == 0) then trap(CSU);
if (PCXI.UL == 0) then trap(CTYP);
PC = {A[11] [31:1], 1’b0};
EA = {PCXI.PCXS, 6'b0, PCXI.PCXO, 6'b0};
{new_PCXI, new_PSW, A[10], A[11], D[8], D[9], D[10], D[11], A[12], A[13], A[14], A[15], D[12], D[13], D[14], D[15]}
= M(EA, 16 * word);
M(EA, word) = FCX;
FCX[19:0] = PCXI[19:0];
PCXI = new_PCXI;
PSW = {new_PSW[31:26], PSW[25:24], new_PSW[23:0]};
Status Flags
Return from a function that was invoked with a CALL instruction. The return address is in register A[11] (return
address). The caller’s upper context register values are restored as part of the return operation.
if (PSW.CDE) then if (cdc_decrement()) then trap(CDU);
if (PCXI[19:0] == 0) then trap(CSU);
if (PCXI.UL == 0) then trap(CTYP);
PC = {A[11] [31:1], 1’b0};
EA = {PCXI.PCXS, 6'b0, PCXI.PCXO, 6'b0};
{new_PCXI, new_PSW, A[10], A[11], D[8], D[9], D[10], D[11], A[12], A[13], A[14], A[15], D[12], D[13], D[14],
D[15]} = M(EA, 16 * word);
M(EA, word) = FCX;
FCX[19:0] = PCXI[19:0];
PCXI = new_PCXI;
PSW = {new_PSW[31:26], PSW[25:24], new_PSW[23:0]};
C PSW.C is overwritten with the value restored from the Context Save Area (CSA).
15
09
H
12 11
-
8 7
00
H
0
31
-
28 27
06
H
22 21
-
12 11
-
8 7
0D
H
0