feedc0de/ghidra-xtensa
1
0
Fork 0
forked from yath/ghidra-xtensa
Code Pull Requests Activity

Improved stack allocation on enter

Browse Source
This commit is contained in:
Olof Astrand
2020-06-28 02:47:54 +02:00
parent a3e8b8b2dd
commit c290afca4d
1 changed files with 45 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
data/languages/xtensaTodo.sinc
View File

@@ -1,3 +1,17 @@
macro pushVal(val32) {
local addr:4 = a1;
a1 = a1 - 4;
*:4 addr = val32;
}
macro popVal(val32) {
local addr:4 = a1;
val32 = *:4 addr;
a1 = a1 + 4;
}
## Windowed Register Option ## ## Windowed Register Option ##
# CALL4 - Call PC-relative, Rotate Window by 4, pg. 298. # CALL4 - Call PC-relative, Rotate Window by 4, pg. 298.
@@ -14,6 +28,12 @@
# CALL8 - Call PC-relative, Rotate Window by 8, pg. 300. # CALL8 - Call PC-relative, Rotate Window by 8, pg. 300.
:call8 srel_6.23_sb2 is srel_6.23_sb2 & u2_4.5 = 0b10 & op0 = 0b0101 { :call8 srel_6.23_sb2 is srel_6.23_sb2 & u2_4.5 = 0b10 & op0 = 0b0101 {
local dst = srel_6.23_sb2; local dst = srel_6.23_sb2;
#s2=a2;
#s3=a3;
#s4=a4;
#s5=a5;
#s6=a6;
#s7=a7;
a2=a10; a2=a10;
a3=a11; a3=a11;
a4=a12; a4=a12;
@@ -35,8 +55,10 @@
# ENTRY - Subroutine Entry, pg. 340. # ENTRY - Subroutine Entry, pg. 340.
:entry as, u15_12.23_sb3 is u15_12.23_sb3 & as & u2_6.7 = 0b00 & u2_4.5 = 0b11 & op0 = 0b0110 { :entry as, u15_12.23_sb3 is u15_12.23_sb3 & as & u2_6.7 = 0b00 & u2_4.5 = 0b11 & op0 = 0b0110 {
#local amn = sext(u15_12.23_sb3); local amn = sext(u15_12.23_sb3);
#as = as + amn; #as = as + amn;
WindowBase = amn;
a1 = a1 - amn;
} }
# if (u15_12.23_sb3 ==4) # if (u15_12.23_sb3 ==4)
@@ -94,6 +116,12 @@
# CALLX8 - Call Register, Rotate Window by 8, pg. 307. # CALLX8 - Call Register, Rotate Window by 8, pg. 307.
:callx8 as is op2 = 0 & op1 = 0 & ar = 0 & as & u2_6.7 = 0b11 & u2_4.5 = 0b10 & op0 = 0 { :callx8 as is op2 = 0 & op1 = 0 & ar = 0 & as & u2_6.7 = 0b11 & u2_4.5 = 0b10 & op0 = 0 {
local dst = as; local dst = as;
#s2=a2;
#s3=a3;
#s4=a4;
#s5=a5;
#s6=a6;
#s7=a7;
a2=a10; a2=a10;
a3=a11; a3=a11;
a4=a12; a4=a12;
@@ -123,6 +151,20 @@
# RETW - Windowed Return, pg. 480. # RETW - Windowed Return, pg. 480.
:retw is op2 = 0 & op1 = 0 & ar = 0 & as = 0 & u2_6.7 = 0b10 & u2_4.5 = 0b01 & op0 = 0 { :retw is op2 = 0 & op1 = 0 & ar = 0 & as = 0 & u2_6.7 = 0b10 & u2_4.5 = 0b01 & op0 = 0 {
# Assume call8
a10=a2;
a11=a3;
a12=a4;
a13=a5;
a14=a6;
a15=a7;
#a2=s2;
#a3=s3;
#a4=s4;
#a5=s5;
#a6=s6;
#a7=s7;
a1 = a1 + WindowBase;
return [a0]; return [a0];
} }
@@ -134,6 +176,7 @@
a13=a5; a13=a5;
a14=a6; a14=a6;
a15=a7; a15=a7;
a1 = a1 + WindowBase;
return [a0]; return [a0];
} }