[Vm-dev] VM Maker: Cog-eem.376.mcz

[commits at source.squeak.org]

Eliot Miranda uploaded a new version of Cog to project VM Maker:
http://source.squeak.org/VMMaker/Cog-eem.376.mcz

==================== Summary ====================

Name: Cog-eem.376
Author: eem
Time: 15 December 2019, 12:23:00.268258 pm
UUID: 330b467e-b08a-42c1-a2f8-1097f3598342
Ancestors: Cog-eem.375

We don't need no steenkin' execution simulation category...

=============== Diff against Cog-eem.375 ===============

Item was changed:
+ ----- Method: GdbARMAlien>>simulateCallOf:nextpc:memory: (in category 'execution') -----
- ----- Method: GdbARMAlien>>simulateCallOf:nextpc:memory: (in category 'execution simulation') -----
  simulateCallOf: address nextpc: nextpc memory: aMemory
  	"Simulate a frame-building call of address.  Build a frame since
  	a) this is used for calls into the run-time which are unlikely to be leaf-calls"
  	"This method builds a stack frame as expected by the simulator, not as defined by ARM aapcs-abi.
  	In ARM aapcs, every method can define for itself, wether it wants to push lr (nextpc), and wether it 
  	uses a frame pointer. The standard never mentions a fp. It merely defines r4-r11 to be callee-saved."
  
  	self pushWord: self lr in: aMemory.
  	self pushWord: self fp in: aMemory.
  	self fp: self sp.
  	PostBuildStackDelta ~= 0 ifTrue:
  		[self sp: self sp - PostBuildStackDelta]. "In order to satisfy the CStackAlignment check by cogit, which is only valid on IA32 platforms."
  	self pc: address!

Item was changed:
+ ----- Method: GdbARMAlien>>simulateJumpCallOf:memory: (in category 'execution') -----
- ----- Method: GdbARMAlien>>simulateJumpCallOf:memory: (in category 'execution simulation') -----
  simulateJumpCallOf: address memory: aMemory
  	"Simulate a frame-building jump of address.  Build a frame since
  	a) this is used for calls into the run-time which are unlikely to be leaf-calls"
  	"This method builds a stack frame as expected by the simulator, not as defined by ARM aapcs-abi.
  	In ARM aapcs, every method can define for itself, wether it wants to push lr (nextpc), and wether it 
  	uses a frame pointer. The standard never mentions a fp. It merely defines r4-r11 to be callee-saved."
  
  	self assert: self sp \\ 8 = 0. "This check ensures, that we conform with ARM abi. Before doing anything to the stack, we ensure 2-word alignment."
  	self pushWord: self lr in: aMemory.
  	self pushWord: self fp in: aMemory.
  	self fp: self sp.
  	PostBuildStackDelta ~= 0 ifTrue:
  		[self sp: self sp - PostBuildStackDelta]. "In order to satisfy the CStackAlignment check by cogit, which is only valid on IA32 platforms."
  	self pc: address!

Item was changed:
+ ----- Method: GdbARMAlien>>simulateLeafCallOf:nextpc:memory: (in category 'execution') -----
- ----- Method: GdbARMAlien>>simulateLeafCallOf:nextpc:memory: (in category 'execution simulation') -----
  simulateLeafCallOf: address nextpc: nextpc memory: aMemory
  	self lr: nextpc.
  	self pc: address!

Item was changed:
+ ----- Method: GdbARMAlien>>simulateLeafReturnIn: (in category 'execution') -----
- ----- Method: GdbARMAlien>>simulateLeafReturnIn: (in category 'execution simulation') -----
  simulateLeafReturnIn: aMemory
  	self pc: self lr!

Item was changed:
+ ----- Method: GdbARMAlien>>simulateReturnIn: (in category 'execution') -----
- ----- Method: GdbARMAlien>>simulateReturnIn: (in category 'execution simulation') -----
  simulateReturnIn: aMemory
  	PostBuildStackDelta ~= 0 ifTrue:
  		[self sp: self sp + PostBuildStackDelta].
  	self fp: (self popWordIn: aMemory).
  	"According to tpr, most C compilers implement return by simply
  	 popping into the pc, rather than popping through the link register."
  	self pc: (self popWordIn: aMemory)!