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GP-5945 Fixed PowerPC e500 instruction extension issues and added function start pattern variants.

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This commit is contained in:
emteere
2025-08-26 11:59:06 -04:00
parent daec88be49
commit f391ddb87c
12 changed files with 192 additions and 401 deletions
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10
Ghidra/Processors/PowerPC/data/patterns/PPC_BE_patterns.xml
View File

@@ -6,6 +6,7 @@
</prepatterns>
<postpatterns>
<data>10010100 00100001 11...... .....000 </data> <!-- STWU r1,xx(r1) -->
<data>011111.. ...01000 00000010 10100110 </data> <!-- MFSPR rx,lr -->
<data>0x7c2c0b78 0x38 0x21 ........ ........ 0x91810000 </data> <!-- or r12,r1,r1; stw r12,0x0(r1) -->
<codeboundary /> <!-- it is at least code -->
<possiblefuncstart/>
@@ -17,8 +18,11 @@
</prepatterns>
<postpatterns>
<data>10010100 00100001 11...... .....000 011111.. ...01000 00000010 10100110 </data> <!-- STWU r1,xx(r1); MFSPR rx,lr -->
<data>011111.. ...01000 00000010 10100110 10010100 00100001 11...... .....000 </data> <!-- MFSPR rx,lr; STWU r1,xx(r1); -->
<data>10010100 00100001 11...... .....000 0x........ 011111.. ...01000 00000010 10100110 </data> <!-- STWU r1,xx(r1); xxx_instr; MFSPR rx,lr -->
<data>011111.. ...01000 00000010 10100110 0x........ 10010100 00100001 11...... .....000 </data> <!-- MFSPR rx,lr; xxx_instr; STWU r1,xx(r1) -->
<data>10010100 00100001 11...... .....000 0x........ 0x........ 011111.. ...01000 00000010 10100110 </data> <!-- STWU r1,xx(r1); xxx_instr; xxx_instr; MFSPR rx,lr -->
<data>011111.. ...01000 00000010 10100110 0x........ 0x........ 10010100 00100001 11...... .....000 </data> <!-- MFSPR rx,lr; xxx_instr; xxx_instr; STWU r1,xx(r1) -->
<data>0x7c2c0b78 0x38 0x21 ........ ........ 0x91810000 </data> <!-- or r12,r1,r1; stw r12,0x0(r1) -->
<codeboundary /> <!-- it is at least code -->
<possiblefuncstart/>
@@ -31,6 +35,12 @@
<possiblefuncstart after="defined" /> <!-- must be something defined right before this -->
</pattern>
<pattern>
<data>011111.. ...01000 00000010 10100110 10010100 00100001 11...... .....000 </data> <!-- MFSPR rx,lr; STWU r1,xx(r1) -->
<codeboundary />
<possiblefuncstart after="defined" /> <!-- must be something defined right before this -->
</pattern>
<pattern>
<data> 0x4e 0x80 0x00 0x21</data> <!-- blrl -->
<possiblefuncstart validcode="function" label="__get_pc_thunk_lr" /> <!-- must be a function here -->

10
Ghidra/Processors/PowerPC/data/patterns/PPC_LE_patterns.xml
View File

@@ -6,6 +6,7 @@
</prepatterns>
<postpatterns>
<data>.....000 11...... 00100001 10010100 </data> <!-- STWU r1,xx(r1) -->
<data>10100110 00000010 ...01000 011111.. </data> <!-- MFSPR rx,lr -->
<data>0x780b2c7c ........ ........ 0x21 0x38 0x00008191 </data> <!-- or r12,r1,r1; stw r12,0x0(r1) -->
<codeboundary /> <!-- it is at least code -->
<possiblefuncstart/>
@@ -17,8 +18,11 @@
</prepatterns>
<postpatterns>
<data>.....000 11...... 00100001 10010100 10100110 00000010 ...01000 011111.. </data> <!-- STWU r1,xx(r1); MFSPR rx,lr -->
<data>10100110 00000010 ...01000 011111.. .....000 11...... 00100001 10010100 </data> <!-- MFSPR rx,lr; STWU r1,xx(r1); -->
<data>.....000 11...... 00100001 10010100 0x........ 10100110 00000010 ...01000 011111.. </data> <!-- STWU r1,xx(r1); xxx_instr; MFSPR rx,lr -->
<data>10100110 00000010 ...01000 011111.. 0x........ .....000 11...... 00100001 10010100 </data> <!-- MFSPR rx,lr; xxx_instr; STWU r1,xx(r1) -->
<data>.....000 11...... 00100001 10010100 0x........ 0x........ 10100110 00000010 ...01000 011111.. </data> <!-- STWU r1,xx(r1); xxx_instr; xxx_instr; MFSPR rx,lr -->
<data>10100110 00000010 ...01000 011111.. 0x........ 0x........ .....000 11...... 00100001 10010100 </data> <!-- MFSPR rx,lr; xxx_instr; xxx_instr; STWU r1,xx(r1) -->
<data>0x780b2c7c ........ ........ 0x21 0x38 0x00008191 </data> <!-- or r12,r1,r1; stw r12,0x0(r1) -->
<codeboundary /> <!-- it is at least code -->
<possiblefuncstart/>
@@ -31,6 +35,12 @@
<possiblefuncstart after="defined" /> <!-- must be something defined right before this -->
</pattern>
<pattern>
<data>10100110 00000010 ...01000 011111.. .....000 11...... 00100001 10010100 </data> <!-- MFSPR rx,lr; STWU r1,xx(r1) -->
<codeboundary />
<possiblefuncstart after="defined" /> <!-- must be something defined right before this -->
</pattern>
<pattern>
<data>0x21 0x00 0x80 0x4e</data> <!-- blrl -->
<possiblefuncstart validcode="function" label="__get_pc_thunk_lr" /> <!-- must be a function here -->